CN111324929A - Modeling method and device of steering system - Google Patents
Modeling method and device of steering system Download PDFInfo
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- CN111324929A CN111324929A CN201811534269.2A CN201811534269A CN111324929A CN 111324929 A CN111324929 A CN 111324929A CN 201811534269 A CN201811534269 A CN 201811534269A CN 111324929 A CN111324929 A CN 111324929A
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Abstract
The disclosure relates to a modeling method and a device of a steering system, and aims to solve the problems that in the related art, the modeling process is complicated and the modeling time is long due to the fact that the vertical relation of a cross shaft in the modeling of the steering system changes along with the change of a hard point. The modeling method of the steering system comprises the following steps: establishing a hard point of a cross shaft of a steering system in a simulation environment; establishing a vertical relation between parts in the steering system cross shaft according to the hard points; and generating the steering system cross shaft according to the hard point and the vertical relation.
Description
Technical Field
The disclosure relates to the field of modeling of vehicle steering systems, and in particular, to a modeling method and device of a steering system.
Background
A vehicle steering system is a mechanism used to change or maintain the direction of travel of an automobile. The function of a vehicle steering system is to control the direction of travel of the vehicle at the will of the driver. The vehicle steering system is of great importance to the running safety of a vehicle, the steering wheel is stressed unevenly due to the fact that a knuckle fork angle exists in the steering system in the steering process of the vehicle, and in order to enable the stress to be even, the angle and the position of the knuckle fork are optimized, so that the effect of minimum fluctuation is achieved.
In the prior art, two methods are generally adopted for vehicle steering system fluctuation analysis, one method is that a product engineer calculates according to the layout of a vehicle steering system, and the other method is that modeling simulation is carried out through adams software.
Disclosure of Invention
The disclosure provides a modeling method and a modeling device of a steering system, which are used for solving the problems that in the related art, the modeling process is complicated and the modeling time is long due to the fact that the vertical relation of a cross shaft in the modeling of the steering system changes along with the change of a hard point.
In order to achieve the above object, in a first aspect of the embodiments of the present disclosure, there is provided a modeling method of a steering system, including:
establishing a hard point of a cross shaft of a steering system in a simulation environment;
establishing a vertical relation between parts in the steering system cross shaft according to the hard points;
and generating the steering system cross shaft according to the hard point and the vertical relation.
Optionally, the hard points comprise a first hard point, a second hard point, and the steering system cross comprises a first steering system cross and a second steering system cross;
the establishing of the vertical relation between the parts in the steering system cross shaft comprises the following steps:
establishing a first vertical relation between parts in the first steering system cross shaft according to the first hard point;
and establishing a second vertical relation between parts in the second steering system cross shaft according to the second hard point.
Optionally, the generating the steering system cross includes:
generating the first steering system cross shaft according to the first hard point and the first vertical relation;
generating the second steering system cross shaft according to the second hard point and the second vertical relation;
generating a steering wheel input shaft having two ends connected to a steering wheel and the first steering system cross shaft, respectively;
generating a gear shaft having both ends connected to the gear part and the second steering system cross shaft, respectively;
generating a steering intermediate shaft having two ends connected to the first steering system cross shaft and the second steering system cross shaft, respectively.
Optionally, the component parts in the first steering system cross include a first yoke and a second yoke, the first perpendicular relationship including: the perpendicular relationship of the first yoke and the steering wheel input shaft, the perpendicular relationship of the first yoke and the second yoke, and the perpendicular relationship of the second yoke and the steering intermediate shaft;
the components in the second steering system cross include a third yoke and a fourth yoke, and the second perpendicular relationship includes: the vertical relation between the third yoke and the gear shaft, the vertical relation between the third yoke and the fourth yoke, and the vertical relation between the fourth yoke and the steering intermediate shaft.
Optionally, the hard spot further includes a steering wheel center point and a gear point, and the generating a steering wheel input shaft having two ends respectively connected to a steering wheel and the first steering system cross shaft includes: generating the steering wheel input shaft according to the first hard point and the steering wheel center point;
the generating of the gear shaft having both ends connected to the gear part and the second steering system cross shaft, respectively, includes: generating the gear shaft according to the second hard point and the gear point;
the generation of the steering intermediate shaft having both ends connected to the first steering system cross shaft and the second steering system cross shaft, respectively, includes: generating the steering intermediate shaft from the first hard point and the second hard point.
Optionally, establishing a perpendicular relationship of the first yoke and the steering wheel input shaft comprises:
establishing a first marker point by taking the first hard point as an origin, and appointing an X axis of the first marker point to the central point of the steering wheel;
establishing a second marker point by taking the first marker point as an origin, so that the Z-axis direction of the second marker point is the same as the Y-axis direction of the first marker point;
and establishing a third marker point on the Z axis of the second marker point, wherein the direction of the third marker point is consistent with that of the second marker point, and the first pitch fork is established through the first hard point and the third marker point.
Optionally, the establishing a perpendicular relationship between the first yoke and the second yoke includes:
establishing a fourth marker point by taking the first hard point as an origin, and designating the X axis and the Z axis of the fourth marker point to be in a plane determined by the first hard point, the second hard point and the central point of the steering wheel, and simultaneously designating the X axis of the fourth marker point to the second hard point;
establishing a fifth marker point by taking the fourth marker point as an origin, so that the Z-axis direction of the fifth marker point is the same as the Z-axis direction of the fourth marker point;
and establishing a sixth marker point on the Z axis of the fifth marker point, wherein the direction of the sixth marker point is consistent with that of the fifth marker point, and the second pitch fork is established through the first hard point and the sixth marker point.
Optionally, the establishing a perpendicular relationship between the third yoke and the gear shaft includes:
establishing a seventh marker point by taking the second hard point as an origin, and appointing an X axis of the seventh marker point to the gear point;
establishing an eighth marker point by taking the seventh marker point as an origin, so that the Z-axis direction of the eighth marker point is the same as the Y-axis direction of the seventh marker point;
and establishing a ninth marker point on the Z axis of the eighth marker point, wherein the direction of the ninth marker point is consistent with the direction of the eighth marker point, and establishing the third pitch fork through the second hard point and the ninth marker point.
Optionally, the establishing a perpendicular relationship between the third yoke and the fourth yoke includes:
establishing a tenth marker point with the second hard point as an origin, and specifying that an X axis and a Z axis of the tenth marker point are in a plane determined by the first hard point, the second hard point and the gear point, and simultaneously specifying that the X axis of the tenth marker point points to the first hard point;
establishing an eleventh marker point by taking the tenth marker point as an origin, so that the Z-axis direction of the eleventh marker point is the same as the Z-axis direction of the tenth marker point;
and establishing a twelfth marker point on the Z axis of the eleventh marker point, wherein the direction of the twelfth marker point is consistent with that of the eleventh marker point, and the fourth pitch fork is established through the second hard point and the twelfth marker point.
In a second aspect of the embodiments of the present disclosure, there is provided a modeling apparatus of a steering system, including:
a memory having a computer program stored thereon; and
a processor for executing the computer program in the memory to implement the steps of the method of any one of the first aspect.
By adopting the technical scheme, a hard point of the steering system cross shaft is established in a simulation environment; establishing a vertical relation between parts in the steering system cross shaft according to the hard points; and generating the steering system cross shaft according to the hard point and the vertical relation. The method and the device solve the problems that in the modeling of the steering system in the related art, the vertical relation of the cross shaft changes along with the change of a hard point, so that the modeling process is complicated, and the modeling time is long.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a model diagram of a steering system shown in accordance with an exemplary embodiment of the present disclosure.
Fig. 2 is an enlarged model view of the first steering system cross in fig. 1.
FIG. 3 is a flow chart illustrating a method of modeling a steering system according to an exemplary embodiment of the present disclosure.
FIG. 4 is a flow chart illustrating a method of establishing a perpendicular relationship of the first yoke to the steering wheel input shaft according to an exemplary embodiment of the present disclosure.
FIG. 5 is a flow chart illustrating a method of establishing a perpendicular relationship between the first yoke and the second yoke according to an exemplary embodiment of the present disclosure.
FIG. 6 is a flow chart illustrating the present disclosure establishing a perpendicular relationship of the third yoke to the gear shaft according to an exemplary embodiment.
FIG. 7 is a flow chart illustrating a process of establishing a perpendicular relationship between the third yoke and the fourth yoke according to an exemplary embodiment of the present disclosure.
FIG. 8 is a block diagram of a modeling apparatus of a steering system shown in accordance with an exemplary embodiment of the present disclosure.
FIG. 9 is a block diagram illustrating a vertical relationship establishing module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 10 is a block diagram of a cross-axis building block of a modeling apparatus of a steering system shown in accordance with an exemplary embodiment of the present disclosure.
FIG. 11 is a block diagram illustrating a first vertical setup module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 12 is a block diagram illustrating a second vertical setup module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 13 is a block diagram illustrating a first sub-module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 14 is a block diagram illustrating a second sub-module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 15 is a block diagram illustrating a fourth sub-module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 16 is a block diagram illustrating a fifth sub-module of a modeling apparatus of a steering system according to an exemplary embodiment of the present disclosure.
FIG. 17 is a block diagram of a modeling arrangement for a steering system shown in accordance with an exemplary embodiment of the present disclosure.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the simulation environment may be adams software, which is not limited in the present disclosure, and in the following embodiments of the present disclosure, adams software is used to perform modeling of the steering system.
Fig. 1 is a model diagram of a steering system 300 according to an exemplary embodiment of the present disclosure, the steering system 300 including a steering wheel 330, a steering wheel input shaft 340, a first steering system cross 310, a second steering system cross 320, a steering intermediate shaft 350, and a pinion shaft 360, as shown in fig. 1. The first steering system cross 310 and the second steering system cross 320 each include two yokes, the first steering system cross 310 includes a first yoke 311 and a second yoke 312, and the second steering system cross 320 includes a third yoke 321 and a fourth yoke 322. The steering wheel 330 is connected to the first steering cross 310 via a steering wheel input shaft 340, the first steering cross 310 and the second steering cross 320 are connected via the steering intermediate shaft 350, and the pinion shaft 360 is connected to the second steering cross 320 and the remaining steering devices. Rotation of the steering wheel 330 rotates the first steering cross 310, which in turn rotates the second steering cross 320, which in turn drives the remaining steering devices via the gear shaft 360.
Fig. 2 is an enlarged model view of first steering system cross 310 in fig. 1. As shown in fig. 2, the first steering system cross 310 includes a first yoke 311 and a second yoke 312, the first yoke 311 and the second yoke 312 are crossed, and their crossing points connect the steering wheel input shaft 340 and the steering intermediate shaft 350. Similarly, the second steering cross 320 includes a third yoke 321 and a fourth yoke 322, the third yoke 321 and the fourth yoke 322 are crossed, and the crossing point connects the pinion shaft 360 and the steering intermediate shaft 350.
FIG. 3 is a flowchart illustrating a method of modeling a steering system according to an exemplary embodiment of the present disclosure, as shown in FIG. 3, the method including the steps of:
and S100, establishing a hard point of the steering system cross shaft in a simulation environment.
And S200, establishing a vertical relation between parts in the steering system cross shaft according to the hard points.
And S300, generating the steering system cross shaft according to the hard point and the vertical relation.
In step S100, a hard point of the steering system cross shaft is established in the simulation environment, where the hard point is a definable spatial point, and the definition of the hard point is to calculate a spatial position of the hard point, and the calculation of the hard point may be implemented by using the prior art, which is not specifically set forth in this disclosure.
The subsequent modeling is performed on the basis of the hard points, so that the subsequent modeling step can be performed after the building is completed. The hard points include a first hard point, a second hard point, a steering wheel intermediate point and a gear point, the steering system cross includes a first steering system cross and a second steering system cross, the first hard point is related to the establishment of the first steering system cross, and the second hard point is related to the establishment of the second steering system cross.
In step S200, the vertical relationship between the parts in the steering system cross is established based on the hard spots established in step S100.
The first steering system cross includes a first yoke and a second yoke, and the second steering system cross includes a third yoke and a fourth yoke.
The vertical relationship of the first steering system cross-shaft is referred to as a first vertical relationship, which is established based on the first hard point. The first vertical relationship includes a vertical relationship of the first yoke to the steering wheel input shaft, a vertical relationship of the first yoke to the second yoke, and a vertical relationship of the second yoke to the steering intermediate shaft.
The vertical relationship of the second steering system cross is referred to as a second vertical relationship, which is established based on the second hard point. The second vertical relationship includes a vertical relationship of the third yoke to the pinion shaft, a vertical relationship of the third yoke to the fourth yoke, and a vertical relationship of the fourth yoke to the steering intermediate shaft.
And two ends of the steering wheel input shaft are respectively connected with a steering wheel and the first steering system cross shaft and are established according to the first hard point and the steering wheel center point.
And two ends of the gear shaft are respectively connected with a gear part and the second steering system cross shaft and are established according to the second hard point and the gear point.
And two ends of the steering intermediate shaft are respectively connected with the first steering system cross shaft and the second steering system cross shaft and are established according to the first hard point and the second hard point. The establishment of the perpendicular relationship of the first steering system cross-shaft is shown in fig. 4 and 5.
Fig. 4 is a flow chart illustrating a method of establishing a perpendicular relationship between the first yoke and the steering wheel input shaft according to an exemplary embodiment of the present disclosure, as shown in fig. 4, the method for establishing a perpendicular relationship between the first yoke and the steering wheel input shaft includes the steps of:
s201, establishing a first marker point by taking the first hard point as an original point, and appointing an X axis of the first marker point to the central point of the steering wheel.
A marker point is a directional point that can be interpreted to include a location point and a directional coordinate system, and in embodiments of the present disclosure, a marker point can be considered to include a location point and a directional coordinate system.
The establishment of the first marker point is established on the basis of a first hard point, and the first marker point is established by taking the first hard point as an origin, namely, a position point of the first marker point is established on the space position of the first hard point.
After the position point of the first marker point is determined, a direction coordinate system of the first marker point needs to be determined, the X axis of the first marker point is appointed to point to the central point of the steering wheel, and then the establishment of the first marker point is completed.
S202, establishing a second marker point by taking the first marker point as an origin, so that the Z-axis direction of the second marker point is the same as the Y-axis direction of the first marker point.
The establishment of the second marker point is established on the basis of the first marker point, and the second marker point is established by taking the position point of the first marker point as an origin, namely the position point of the second marker point is established at the position point of the first marker point.
After the position point of the second marker point is determined, a direction coordinate system of the second marker point is also required to be determined, the Z-axis direction of the second marker point is appointed to be the same as the Y-axis direction of the first marker point, and the establishment of the second marker point is completed.
S203, establishing a third marker point on the Z axis of the second marker point, wherein the direction of the third marker point is consistent with that of the second marker point, and establishing the first pitch through the first hard point and the third marker point.
The establishment of the third marker point is established on the basis of the second marker point, and the third marker point is established on the Z axis of the second marker point, namely the third marker point is on the Z axis of the second marker point.
And the direction of the third marker point is consistent with that of the second marker point, and the establishment of the third marker point is completed. And establishing the first pitch through the first hard point and the third marker point, namely the first pitch is positioned on the Z axis of the second marker point.
As can be seen from steps S201 to S203, the X axis and the Y axis of the first marker point are perpendicular to each other, and meanwhile, the Z axis direction of the second marker point is the same as the Y axis direction of the first marker point, so that it can be obtained that the X axis of the first marker point is perpendicular to the Z axis of the second marker point, and the third marker point is on the Z axis of the second marker point. In summary, it can be found that the X-axis of the first marker point is perpendicular to the third marker point.
The steering wheel input shaft is established through the first hard point and the steering wheel center point, namely the steering wheel input shaft is located on the X axis of the first marker point.
And a first pitch fork established by the first hard point and the third marker point is perpendicular to the steering wheel input shaft.
Fig. 5 is a flow chart illustrating a method of establishing a perpendicular relationship between the first yoke and the second yoke according to an exemplary embodiment of the present disclosure, as shown in fig. 5, the method for establishing a perpendicular relationship between the first yoke and the second yoke includes the following steps:
s204, establishing a fourth marker point by taking the first hard point as an origin, and designating that an X axis and a Z axis of the fourth marker point are positioned in a plane determined by the first hard point, the second hard point and the central point of the steering wheel, and simultaneously designating that the X axis of the fourth marker point points to the second hard point.
The establishment of the fourth marker point is established on the basis of the first hard point, and the fourth marker point is established by taking the first hard point as an origin, namely, the position point of the fourth marker point is established on the space position of the first hard point.
After the position point of the fourth marker point is determined, a direction coordinate system of the fourth marker point is also required to be determined. A plane can be determined by the first hard point, the second hard point and the steering wheel center point, and the X axis and the Z axis of the fourth marker point are designated to be in the plane, and the X axis of the fourth marker point is designated to be directed to the second hard point. And finishing the establishment of the fourth marker point.
S205, establishing a fifth marker point by taking the fourth marker point as an origin, so that the Z-axis direction of the fifth marker point is the same as the Z-axis direction of the fourth marker point.
The establishment of the fifth marker point is established on the basis of the fourth marker point, and the fifth marker point is established by taking the position point of the fourth marker point as an origin, namely the position point of the fifth marker point is established at the position point of the fourth marker point.
After the position point of the fifth marker point is determined, a direction coordinate system of the fifth marker point is also required to be determined, the Z-axis direction of the fifth marker point is appointed to be the same as the Z-axis direction of the fourth marker point, and the establishment of the fifth marker point is completed.
S206, a sixth marker point is established on the Z axis of the fifth marker point, the direction of the sixth marker point is consistent with that of the fifth marker point, and the second pitch fork is established through the first hard point and the sixth marker point.
The establishment of the sixth marker point is established on the basis of the fifth marker point, and the sixth marker point is established on the Z axis of the fifth marker point, namely the sixth marker point is on the Z axis of the fifth marker point.
And the direction of the sixth marker point is consistent with that of the fifth marker point, and the establishment of the sixth marker point is completed. And establishing the second joint fork through the first hard point and the sixth marker point, namely the second joint fork is positioned on the Z axis of the fifth marker point.
As can be seen from steps S204-S205, the Z-axis of the fourth marker point is located in the plane defined by the first hard point, the second hard point and the steering wheel center point, and the Z-axis of the fifth marker point is also located in the plane defined by the first hard point, the second hard point and the steering wheel center point, and since the sixth marker point is located on the Z-axis of the fifth marker point, the second node fork is located in the plane defined by the first hard point, the second hard point and the steering wheel center point.
As can be seen from steps S201-S203, the first yoke is perpendicular to the plane, and thus, the first yoke and the second yoke are perpendicular to each other.
The perpendicular relationship between the first yoke and the steering wheel input shaft and the perpendicular relationship between the first yoke and the second yoke are obtained above.
The steering intermediate shaft is established by the first hard point and the second hard point. Because the X axis of the fourth marker point points to the second hard point and the sixth marker point is on the Z axis of the fifth marker point, the Z axis of the fifth marker point and the Z axis of the fourth marker point to the same direction, that is, the steering middle shaft and the second joint fork are perpendicular to each other.
To this end, the perpendicular relationship between the first yoke and the steering wheel input shaft, between the first yoke and the second yoke, and between the counter shaft and the second yoke is determined.
To sum up, the steps S201-S206 are described as establishing the vertical relationship of the first steering system cross-shaft.
The establishment of the perpendicular relationship of the first steering system cross-shaft is shown in fig. 6 and 7.
FIG. 6 is a flow chart illustrating a method of establishing a perpendicular relationship of the third yoke to the gear shaft, as shown in FIG. 6, according to an exemplary embodiment of the present disclosure, the method for establishing a perpendicular relationship of the third yoke to the gear shaft, including the steps of:
s207, establishing a seventh marker point by taking the second hard point as an origin, and appointing an X axis of the seventh marker point to the gear point.
A marker point is a directional point that can be interpreted to include a location point and a directional coordinate system, and in embodiments of the present disclosure, a marker point can be considered to include a location point and a directional coordinate system.
The establishment of the seventh marker point is established on the basis of a second hard point, and the seventh marker point is established by taking the second hard point as an origin, namely, a position point of the seventh marker point is established on the space position of the second hard point.
After the position point of the seventh marker point is determined, a direction coordinate system of the seventh marker point needs to be determined, the X axis of the seventh marker point is appointed to point to the gear point, and the seventh marker point is established.
S208, establishing an eighth marker point by taking the seventh marker point as an origin, so that the Z-axis direction of the eighth marker point is the same as the Y-axis direction of the seventh marker point.
The establishment of the eighth marker point is established on the basis of the seventh marker point, and the eighth marker point is established by taking the position point of the seventh marker point as an origin, namely the position point of the eighth marker point is established at the position point of the seventh marker point.
After the position point of the eighth marker point is determined, a direction coordinate system of the eighth marker point needs to be determined, the Z-axis direction of the eighth marker point is appointed to be the same as the Y-axis direction of the seventh marker point, and the eighth marker point is established.
S209, a ninth marker point is established on the Z axis of the eighth marker point, the direction of the ninth marker point is consistent with the direction of the eighth marker point, and the third pitch fork is established through the second hard point and the ninth marker point.
The ninth marker point is established on the basis of the eighth marker point, and the ninth marker point is established on the Z axis of the eighth marker point, namely the ninth marker point is on the Z axis of the eighth marker point.
And the direction of the ninth marker point is consistent with that of the eighth marker point, so that the establishment of the ninth marker point is completed. And establishing the third joint fork through the second hard point and the ninth marker point, namely the third joint fork is positioned on the Z axis of the eighth marker point.
As can be seen from steps S207 to S209, the X axis and the Y axis of the seventh marker point are perpendicular to each other, and meanwhile, the Z axis direction of the eighth marker point is the same as the Y axis direction of the seventh marker point, so that it can be obtained that the X axis of the seventh marker point is perpendicular to the Z axis of the eighth marker point, and the ninth marker point is on the Z axis of the eighth marker point. In summary, it can be found that the X-axis of the seventh marker point is perpendicular to the ninth marker point.
The gear shaft is established by the second hard point and the gear point, i.e. the square gear shaft is located on the X-axis of the seventh marker point.
And a third pitch fork established by the second hard point and the ninth marker point is perpendicular to the gear shaft.
Fig. 7 is a flowchart illustrating a method for establishing a perpendicular relationship between the third yoke and the fourth yoke according to an exemplary embodiment of the present disclosure, as shown in fig. 7, the method is used to establish a perpendicular relationship between the third yoke and the fourth yoke, and includes the following steps:
s210, establishing a tenth marker point by taking the second hard point as an origin, and designating that an X axis and a Z axis of the tenth marker point are positioned in a plane determined by the first hard point, the second hard point and the gear point, and simultaneously designating that the X axis of the tenth marker point points to the first hard point.
The tenth marker point is established on the basis of a second hard point, and the tenth marker point is established by taking the second hard point as an origin, namely, a position point of the tenth marker point is established on the space position of the second hard point.
After the position point of the tenth marker point is determined, a direction coordinate system of the tenth marker point is also required to be determined. A plane may be defined by the first hard point, the second hard point, and the gear point, with the X-axis and Z-axis of the tenth marker point being designated as being in the plane, and with the X-axis of the tenth marker point being designated as being directed toward the first hard point. And finishing the establishment of the tenth marker point.
S211, establishing an eleventh marker point by taking the tenth marker point as an origin, so that the Z-axis direction of the eleventh marker point is the same as the Z-axis direction of the tenth marker point.
The eleventh marker point is established on the basis of the tenth marker point, and the eleventh marker point is established by taking the position point of the tenth marker point as an origin, namely the position point of the eleventh marker point is established at the position point of the tenth marker point.
After the position point of the eleventh marker point is determined, a direction coordinate system of the eleventh marker point needs to be determined, the Z-axis direction of the eleventh marker point is appointed to be the same as the Z-axis direction of the tenth marker point, and the eleventh marker point is established.
S212, a twelfth marker point is established on the Z axis of the eleventh marker point, the direction of the twelfth marker point is consistent with that of the eleventh marker point, and the fourth pitch fork is established through the second hard point and the twelfth marker point.
The establishment of the twelfth marker point is established on the basis of the eleventh marker point, and the twelfth marker point is established on the Z axis of the eleventh marker point, namely the twelfth marker point is on the Z axis of the eleventh marker point.
And the direction of the twelfth marker point is consistent with that of the eleventh marker point, so that the establishment of the twelfth marker point is completed. And establishing the fourth joint through the second hard point and the twelfth marker point, namely the fourth joint is positioned on the Z axis of the eleventh marker point.
As can be seen from steps S210-S212, the Z-axis of the tenth marker point is in the plane defined by the first hard point, the second hard point and the gear point, and the Z-axis of the eleventh marker point is also in the plane defined by the first hard point, the second hard point and the gear point, and the twelfth marker point is on the Z-axis of the eleventh marker point, so that the fourth node fork is in the plane defined by the first hard point, the second hard point and the gear point.
As can be seen from steps S207-S209, the third yoke is perpendicular to the plane, and therefore, the third yoke and the fourth yoke are perpendicular to each other.
The vertical relationship between the third yoke and the gear shaft and the vertical relationship between the third yoke and the fourth yoke are obtained above.
The steering intermediate shaft is established by the first hard point and the second hard point. Since the X axis of the tenth marker point points to the first hard point and the twelfth marker point is on the Z axis of the eleventh marker point, the Z axis of the eleventh marker point and the Z axis of the tenth marker point are the same, that is, the steering middle shaft and the fourth joint fork are perpendicular to each other.
Up to this point, the perpendicular relationship between the third yoke and the gear shaft, between the third yoke and the fourth yoke, and between the counter shaft and the fourth yoke is determined.
In summary, the steps S207 to S212 are described for establishing the vertical relationship of the second steering system cross shaft.
In S300, the steering system cross is generated according to the hard spot and the perpendicular relationship.
In steps S100-S200, the perpendicular relationship of the first and second steering system cross shafts has been established, followed by the establishment of the steering system cross shaft.
The first steering system cross shaft is composed of the first joint fork and the second joint fork, the first joint fork is established through the first hard point and the third marker point, the second joint fork is established through the first hard point and the sixth marker point, and the first joint fork and the second joint fork are perpendicularly intersected to form the first steering system cross shaft.
The second steering system cross shaft is composed of the third joint fork and the fourth joint fork, the third joint fork is established through the second hard point and the ninth marker point, the fourth joint fork is established through the second hard point and the twelfth marker point, and the third joint fork and the fourth joint fork are vertically intersected to form the second steering system cross shaft.
FIG. 8 is a block diagram of a modeling apparatus 100 of a steering system shown in accordance with an exemplary embodiment of the present disclosure.
The modeling apparatus 100 of the steering system includes:
a hard spot establishing module 110 configured to establish a hard spot of the steering system cross shaft in a simulation environment.
A perpendicular relationship establishing module 120 configured to establish a perpendicular relationship between components in the steering system cross shaft based on the hard spot.
A cross-axis creation module 130 configured to generate the steering system cross-axis based on the hard spot and the perpendicular relationship.
FIG. 9 is a block diagram illustrating a vertical relationship establishing module 120 of a modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The hard points include a first hard point and a second hard point, and the steering system cross includes a first steering system cross and a second steering system cross.
The vertical relationship establishing module 120 includes:
a first vertical establishing module 121 configured to establish a first vertical relationship between components in the first steering system cross-shaft based on the first hard spot.
A second vertical establishing module 122 configured to establish a second vertical relationship between components in the second steering system cross based on the second hard spot.
FIG. 10 is a block diagram of a spider creation module 130 of a modeling apparatus 100 of a steering system shown in accordance with an exemplary embodiment of the present disclosure.
The hard spot further comprises a steering wheel center point and a gear point.
The cross-shaft establishing module 130 includes:
a first cross-axis creation module 131 configured to generate the first steering system cross-axis based on the first hard spot and a first perpendicular relationship.
A second cross creation module 132 configured to generate the second steering system cross based on the second hard spot and a second perpendicular relationship.
An input shaft creation module 133 configured to create a steering wheel input shaft having two ends connected to a steering wheel and the first steering system cross shaft, respectively. Generating the steering wheel input shaft from the first hard point and the steering wheel center point.
An intermediate shaft creation module 134 configured to generate a steering intermediate shaft having both ends connected to the first and second steering system cross shafts, respectively. Generating the steering intermediate shaft from the first hard point and the second hard point.
A pinion shaft establishing module 135 configured to generate a pinion shaft having both ends connected to the gear portion and the second steering system cross, respectively. And generating the gear shaft according to the second hard point and the gear point.
FIG. 11 is a block diagram illustrating a first vertical setup module 121 of a modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The components in the first steering system cross include a first yoke and a second yoke.
The first vertical setup module 121 includes:
a first sub-module 1211 configured to establish a perpendicular relationship of the first yoke to the steering wheel input shaft.
A second sub-module 1212 configured to establish a perpendicular relationship of the first yoke and the second yoke.
A third sub-module 1213 configured to establish a perpendicular relationship of the second yoke to the steer countershaft.
FIG. 12 is a block diagram illustrating a second vertical setup module 122 of the modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The components in the second steering system cross include a third yoke and a fourth yoke.
The second vertical module 122 includes:
a fourth sub-module 1221 configured to establish a perpendicular relationship of the third yoke and the gear shaft.
A fifth submodule 1222 configured to establish a perpendicular relationship between the third yoke and the fourth yoke.
A sixth sub-module 1223 configured to establish a perpendicular relationship of the fourth yoke to the steer countershaft.
Fig. 13 is a block diagram illustrating a first sub-module 1211 of a modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The first sub-module 1211 includes:
a first marker point establishing module 1211a configured to establish a first marker point with the first hard point as an origin, and specify that an X-axis of the first marker point points to the steering wheel center point.
A second marker point establishing module 1211b configured to establish a second marker point with the first marker point as an origin such that a Z-axis direction of the second marker point is the same as a Y-axis direction of the first marker point.
A third marker point establishing module 1211c configured to establish a third marker point on the Z-axis of the second marker point, where the third marker point direction is consistent with the direction of the second marker point, and the first pitch fork is established with the third marker point through the first hard point.
FIG. 14 is a block diagram illustrating a second sub-module 1212 of the modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The second sub-module 1212 includes:
a fourth marker point establishing module 1212a configured to establish a fourth marker point with the first hard point as an origin, specify that an X-axis and a Z-axis of the fourth marker point are within a plane determined by the first hard point, the second hard point, and the steering wheel center point, and specify that the X-axis of the fourth marker point is directed to the second hard point.
A fifth marker point establishing module 1212b configured to establish a fifth marker point with the fourth marker point as an origin, such that a Z-axis direction of the fifth marker point is the same as a Z-axis direction of the fourth marker point.
A sixth marker point establishing module 1212c configured to establish a sixth marker point on the Z-axis of the fifth marker point, where the sixth marker point direction is consistent with the direction of the fifth marker point, and the second pitch fork is established by the first hard point and the sixth marker point.
FIG. 15 is a block diagram illustrating a fourth sub-module 1221 of the modeling apparatus 100 of a steering system according to an exemplary embodiment of the present disclosure.
The fourth sub-module 1221 includes:
a seventh marker point establishing module 1221a configured to establish a seventh marker point with the second hard point as an origin, the X-axis of the seventh marker point being designated to point to the gear point.
An eighth marker point establishing module 1221b configured to establish an eighth marker point with the seventh marker point as an origin, so that a Z-axis direction of the eighth marker point is the same as a Y-axis direction of the seventh marker point.
A ninth marker point establishing module 1221c configured to establish a ninth marker point on the Z-axis of the eighth marker point, where the ninth marker point direction is consistent with the eighth marker point direction, and the third pitch fork is established by the second hard point and the ninth marker point.
FIG. 16 is a block diagram of a fifth submodule 1222 of the modeling apparatus 100 of a steering system shown in the present disclosure according to an exemplary embodiment.
The fifth submodule 1222 includes:
a tenth marker point establishing module 1222b configured to establish a tenth marker point with the second hard point as an origin, the X-axis and the Z-axis of the tenth marker point being designated to be within a plane determined by the first hard point, the second hard point and the gear point, while the X-axis of the tenth marker point is designated to be directed to the first hard point.
An eleventh marker point establishing module 1222b configured to establish an eleventh marker point with the tenth marker point as an origin such that a Z-axis orientation of the eleventh marker point is the same as a Z-axis orientation of the tenth marker point.
A twelfth marker point establishing module 1222c configured to establish a twelfth marker point on the Z-axis of the eleventh marker point, the twelfth marker point direction coinciding with the direction of the eleventh marker point, the fourth joint fork being established by the second hard point and the twelfth marker point.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
FIG. 17 is a block diagram of a modeling apparatus 200 of a steering system shown in accordance with an exemplary embodiment of the present disclosure. As shown in fig. 17, the apparatus 200 may include: a processor 201, a memory 202, a multimedia component 203, an input/output (I/O) interface 204, and a communication component 205.
The processor 201 is configured to control the overall operation of the apparatus 200, so as to complete all or part of the steps in the modeling method of the steering system. The memory 202 is used to store various types of data to support operation of the device 200, which may include, for example, instructions for any application or method operating on the device 200, as well as application-related data. The Memory 202 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 203 may include screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 202 or transmitted through the communication component 205. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 204 provides an interface between the processor 201 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 205 is used for wired or wireless communication between the apparatus 200 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination of one or more of them, so that the corresponding Communication component 205 may include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the modeling method of the steering system described above.
In another exemplary embodiment, a computer readable storage medium, such as the memory 202, is also provided that includes program instructions executable by the processor 201 of the apparatus 200 to perform the modeling method of the steering system described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A modeling method of a steering system, characterized by comprising:
establishing a hard point of a cross shaft of a steering system in a simulation environment;
establishing a vertical relation between parts in the steering system cross shaft according to the hard points;
and generating the steering system cross shaft according to the hard point and the vertical relation.
2. The method of claim 1, wherein the hard points comprise a first hard point, a second hard point, and the steering system cross comprises a first steering system cross and a second steering system cross;
the establishing of the vertical relation between the parts in the steering system cross shaft comprises the following steps:
establishing a first vertical relation between parts in the first steering system cross shaft according to the first hard point;
and establishing a second vertical relation between parts in the second steering system cross shaft according to the second hard point.
3. The method of claim 2, wherein the generating the steering system cross comprises:
generating the first steering system cross shaft according to the first hard point and the first vertical relation;
generating the second steering system cross shaft according to the second hard point and the second vertical relation;
generating a steering wheel input shaft having two ends connected to a steering wheel and the first steering system cross shaft, respectively;
generating a gear shaft having both ends connected to the gear part and the second steering system cross shaft, respectively;
generating a steering intermediate shaft having two ends connected to the first steering system cross shaft and the second steering system cross shaft, respectively.
4. The method of claim 3, wherein the component parts in the first steering system cross include a first yoke and a second yoke, the first perpendicular relationship comprising: the perpendicular relationship of the first yoke and the steering wheel input shaft, the perpendicular relationship of the first yoke and the second yoke, and the perpendicular relationship of the second yoke and the steering intermediate shaft;
the components in the second steering system cross include a third yoke and a fourth yoke, and the second perpendicular relationship includes: the vertical relation between the third yoke and the gear shaft, the vertical relation between the third yoke and the fourth yoke, and the vertical relation between the fourth yoke and the steering intermediate shaft.
5. The method of claim 3, wherein the hard spot further comprises a steering wheel center point and a gear point, and wherein generating a steering wheel input shaft having ends connected to a steering wheel and the first steering system cross shaft, respectively, comprises: generating the steering wheel input shaft according to the first hard point and the steering wheel center point;
the generating of the gear shaft having both ends connected to the gear part and the second steering system cross shaft, respectively, includes: generating the gear shaft according to the second hard point and the gear point;
the generation of the steering intermediate shaft having both ends connected to the first steering system cross shaft and the second steering system cross shaft, respectively, includes: generating the steering intermediate shaft from the first hard point and the second hard point.
6. The method of claim 4, wherein establishing the perpendicular relationship of the first yoke to the steering wheel input shaft comprises:
establishing a first marker point by taking the first hard point as an origin, and appointing an X axis of the first marker point to the central point of the steering wheel;
establishing a second marker point by taking the first marker point as an origin, so that the Z-axis direction of the second marker point is the same as the Y-axis direction of the first marker point;
and establishing a third marker point on the Z axis of the second marker point, wherein the direction of the third marker point is consistent with that of the second marker point, and the first pitch fork is established through the first hard point and the third marker point.
7. The method of claim 6, wherein said establishing a perpendicular relationship of said first yoke to said second yoke comprises:
establishing a fourth marker point by taking the first hard point as an origin, and designating the X axis and the Z axis of the fourth marker point to be in a plane determined by the first hard point, the second hard point and the central point of the steering wheel, and simultaneously designating the X axis of the fourth marker point to the second hard point;
establishing a fifth marker point by taking the fourth marker point as an origin, so that the Z-axis direction of the fifth marker point is the same as the Z-axis direction of the fourth marker point;
and establishing a sixth marker point on the Z axis of the fifth marker point, wherein the direction of the sixth marker point is consistent with that of the fifth marker point, and the second pitch fork is established through the first hard point and the sixth marker point.
8. The method of claim 4, wherein said establishing a perpendicular relationship of said third yoke to said gear shaft comprises:
establishing a seventh marker point by taking the second hard point as an origin, and appointing an X axis of the seventh marker point to the gear point;
establishing an eighth marker point by taking the seventh marker point as an origin, so that the Z-axis direction of the eighth marker point is the same as the Y-axis direction of the seventh marker point;
and establishing a ninth marker point on the Z axis of the eighth marker point, wherein the direction of the ninth marker point is consistent with the direction of the eighth marker point, and establishing the third pitch fork through the second hard point and the ninth marker point.
9. The method of claim 8, wherein said establishing a perpendicular relationship of said third yoke to said fourth yoke comprises:
establishing a tenth marker point with the second hard point as an origin, and specifying that an X axis and a Z axis of the tenth marker point are in a plane determined by the first hard point, the second hard point and the gear point, and simultaneously specifying that the X axis of the tenth marker point points to the first hard point;
establishing an eleventh marker point by taking the tenth marker point as an origin, so that the Z-axis direction of the eleventh marker point is the same as the Z-axis direction of the tenth marker point;
and establishing a twelfth marker point on the Z axis of the eleventh marker point, wherein the direction of the twelfth marker point is consistent with that of the eleventh marker point, and the fourth pitch fork is established through the second hard point and the twelfth marker point.
10. A steering system optimization modeling apparatus, comprising:
a memory having a computer program stored thereon; and
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 9.
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| CN201811534269.2A CN111324929A (en) | 2018-12-14 | 2018-12-14 | Modeling method and device of steering system |
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| CN201811534269.2A CN111324929A (en) | 2018-12-14 | 2018-12-14 | Modeling method and device of steering system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113359455A (en) * | 2021-06-16 | 2021-09-07 | 江铃汽车股份有限公司 | Modeling method for automobile steering system |
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