CN114297777B - VR method for displaying parts of whole automobile - Google Patents
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Abstract
The invention discloses a VR method for displaying parts of a whole automobile, which comprises the following steps: s1, modeling of the whole automobile parts, S2, establishment of data communication connection, S3, data import of the automobile parts model, S4, data sharing, S5, observation and display of the whole automobile parts, VR equipment and an active control handle can be worn by an author when the method is used, the whole automobile parts can be integrally visited and displayed, a learner can fully know the whole automobile structure of the automobile conveniently, learning effect is improved, and meanwhile, other people can establish a network connection relationship with a main VR glasses through an Ethernet, so that data import and transmission are convenient, unified management and learning can be conveniently carried out by a plurality of people in actual use, the method is effectively applicable to education and teaching environments of schools, and learning quality of students is improved.
Description
Technical Field
The invention discloses a method for displaying parts of a whole automobile by VR, and belongs to the technical field of VR display.
Background
The virtual reality technology is a brand new practical technology developed in the 20 th century. The virtual reality technology comprises a computer, electronic information and simulation technology, and the basic implementation mode is that the computer simulates a virtual environment so as to bring the sense of environmental immersion. With the continuous development of social productivity and scientific technology, VR technology is increasingly required by various industries. VR technology has also made great progress and gradually become a new scientific and technological field;
However, in the existing automobile part display work, the automobile part display is generally performed by using a paper-grade process diagram and an electronic grade diagram, the content is relatively fixed, the turning is complicated, and even if the automobile part is displayed in a real object, the automobile part cannot be displayed in a real object, so that the automobile part display work is inconvenient to use, educate and teach, and therefore, the VR method for displaying the automobile part is provided.
Disclosure of Invention
The invention aims to solve the defects and provides a method for displaying the whole automobile parts by VR.
A VR method for displaying parts of a whole automobile comprises the following steps:
S1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. Performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
S2, establishing data communication connection;
a. Establishing wireless communication connection between the VR glasses, the left-hand control handle and the right-hand control handle provided with the displacement sensor and a computer for drawing the automobile part model in the step S1 through a wireless transceiver module;
S3, importing automobile part model data;
a. The method comprises the steps that S2, automobile part model information drawn by a computer with a communication connection relation established in step a is imported into VR glasses through a wireless transceiver module;
S4, data sharing;
a. Establishing a wireless communication connection relationship between the VR glasses with the vehicle model data information and the rest of the VR glasses;
b. transmitting the vehicle model data information into a plurality of VR glasses through the data receiving and transmitting function of the VR glasses, and completing data sharing;
S5, observing and displaying the whole vehicle parts;
a. A user holding VR glasses performs displaying and checking work on the whole automobile through a left master control handle and a right master control handle;
b. A user holding VR glasses selects the components and the details of the parts of the whole automobile through the left master control handle and the right master control handle, and the components and the details of the parts are conveniently observed and checked.
Preferably, in the step S1, a, the relevant assumption and definition includes: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
Preferably, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
Preferably, in the steps S1, b, let X, X be a coordinate matrix of each point, the subscript "0" represents an initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
Preferably, in the step S2, a, the left hand control handle and the right hand control handle function are to locate the viewing path in advance, the selection key of the left hand control handle is used for controlling to change the model angle for viewing the integral part of the automobile, and the trigger key of the left hand handle simulator is used for switching the viewing angle viewing position.
Preferably, the selection key of the right-hand control handle is used for controlling and observing the speed of the assembly flow of the whole automobile part, and the trigger key of the right-hand control handle is used for observing the internal attribute of the whole automobile part model.
Preferably, in the step S4, a, the wireless communication connection relationship is an ethernet network communication connection.
Preferably, the components of the whole automobile in the step S5 and b include a main body bracket, a power system, a transmission mechanism, a chassis mechanism, a control system, a circuit connection system, a vehicle hub, a vehicle caliper system, a suspension system, an air intake system, an exhaust system, a braking system, a steering system, an ignition mechanism, a fuel oil mechanism, a cooling system, a lubrication system and an electric instrument system.
Preferably, the details of the automobile parts in the step S5, b include an engine, a transmission shaft, a gear box, a battery, a chassis, a frame, a hub, a bumper, a door, a fender, a windshield, a pillar, a seat, a center console, an engine cover, a trunk lid, a sunroof, a roof, a door lock, a armrest, a floor, a threshold, an airbag, a seat belt, a brake master cylinder, a brake cylinder, a vacuum booster, a brake pedal assembly, a brake disc, a brake drum, a brake pad, a brake oil pipe, an ABS pump, a camshaft, an intake valve, an exhaust valve, a rocker arm shaft, a tappet, and a push rod.
Compared with the prior art, the invention has the following beneficial effects:
According to the VR method for displaying the parts of the whole automobile, when the VR method is used, an author can wear VR equipment and an active control handle, so that the whole automobile parts can be visited and displayed, a learner can know the whole automobile structure fully, and the learning effect is improved;
Meanwhile, other people can establish a network connection relation with the main VR glasses through the Ethernet, so that data can be conveniently imported and transmitted, and in actual use, unified management and study can be conveniently carried out by a plurality of people, so that the method is effectively applicable to the education and teaching environment of schools, the learning quality of students is improved, the learning effect is improved, the displayed automobile (all parts of the automobile) is controlled to be enlarged or reduced through the left control handle and the right control handle, meanwhile, the automobile parts can be selected, the selected automobile parts can be independently extracted, and the parts can be switched to different angles for viewing through the operating rod, so that the method has a better education and teaching effect;
the technical mode of the automobile integral parts displayed through VR can be used for selecting corresponding parts to be consulted according to own requirements, the complicated link of middle data turning is omitted, the data of parts are convenient to change and replace, the effect of installing different parts at the same part can be checked, the traditional real object demonstration process is replaced, the waste of paper data is reduced, automobile parts required by automobile factory testing, maintenance and training colleges are reduced, and the service time and service life of each part are improved.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A VR method for displaying parts of a whole automobile comprises the following steps:
S1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. Performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
S2, establishing data communication connection;
a. Establishing wireless communication connection between the VR glasses, the left-hand control handle and the right-hand control handle provided with the displacement sensor and a computer for drawing the automobile part model in the step S1 through a wireless transceiver module;
S3, importing automobile part model data;
a. The method comprises the steps that S2, automobile part model information drawn by a computer with a communication connection relation established in step a is imported into VR glasses through a wireless transceiver module;
S4, data sharing;
a. Establishing a wireless communication connection relationship between the VR glasses with the vehicle model data information and the rest of the VR glasses;
b. transmitting the vehicle model data information into a plurality of VR glasses through the data receiving and transmitting function of the VR glasses, and completing data sharing;
S5, observing and displaying the whole vehicle parts;
a. A user holding VR glasses performs displaying and checking work on the whole automobile through a left master control handle and a right master control handle;
b. A user holding VR glasses selects the components and the details of the parts of the whole automobile through the left master control handle and the right master control handle, and the components and the details of the parts are conveniently observed and checked.
As an optimization solution of the present invention, in the steps S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
As an optimization technical scheme of the invention, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
As an optimization technical scheme of the present invention, in the steps S1 and b, let X, X be a coordinate matrix of each point, subscript "0" represents an initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
As an optimization technical scheme of the invention, in the step S2, the functions of the left hand control handle and the right hand control handle are mainly to position the watching path in advance, the selection key of the left hand control handle is used for controlling and changing the model angle for watching the whole automobile part, and the trigger key of the left hand handle simulator is used for switching the position for watching the visual angle.
As an optimization technical scheme of the invention, the selection key of the right-hand control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand control handle is used for observing the internal attribute of the whole automobile part model.
As an optimization technical scheme of the present invention, the wireless communication connection relationship in the step S4, a is an ethernet network communication connection.
As an optimization technical scheme of the invention, the components of the whole automobile in the step S5 and b include, but are not limited to, a main body bracket, a power system, a transmission mechanism, a chassis mechanism, a control system, a circuit connection system, a vehicle hub and vehicle caliper system, a suspension system, an air intake system, an exhaust system, a braking system, a steering system, an ignition mechanism, a fuel oil mechanism, a cooling system, a lubrication system and an electric instrument system.
As an optimized solution of the present invention, the details of the automobile parts in the step S5, b include, but are not limited to, an engine, a transmission shaft, a gear box, a battery, a chassis, a frame, a hub, a bumper, a door, a fender, a windshield, a pillar, a seat, a center console, an engine cover, a trunk lid, a sunroof, a roof, a door lock, an armrest, a floor, a threshold, an airbag, a seat belt, a brake master pump, a brake cylinder, a vacuum booster, a brake pedal assembly, a brake disc, a brake drum, a brake pad, a brake oil pipe, an ABS pump, a camshaft, an intake valve, an exhaust valve, a rocker arm shaft, a tappet, and a push rod.
Embodiment one:
a VR method for displaying parts of a whole automobile comprises the following steps:
S1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. Performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending the modeling;
S2, establishing data communication connection;
a. Establishing wireless communication connection between the VR glasses, the left-hand control handle and the right-hand control handle provided with the displacement sensor and a computer for drawing the automobile part model in the step S1 through a wireless transceiver module;
S3, importing automobile part model data;
a. The method comprises the steps that S2, automobile part model information drawn by a computer with a communication connection relation established in step a is imported into VR glasses through a wireless transceiver module;
S4, data sharing;
a. Establishing a wireless communication connection relationship between the VR glasses with the vehicle model data information and the rest of the VR glasses;
b. transmitting the vehicle model data information into a plurality of VR glasses through the data receiving and transmitting function of the VR glasses, and completing data sharing;
S5, observing and displaying the whole vehicle parts;
a. A user holding VR glasses performs displaying and checking work on the whole automobile through a left master control handle and a right master control handle;
b. A user holding VR glasses selects the components and the details of the parts of the whole automobile through the left master control handle and the right master control handle, and the components and the details of the parts are conveniently observed and checked.
In this embodiment, in step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
In this embodiment, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
In this embodiment, in steps S1 and b, let X, X be the coordinate matrix of each point, subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
In this embodiment, in step S2, a, the left-hand control handle and the right-hand control handle are mainly used for positioning the viewing path in advance, the selection key of the left-hand control handle is used for controlling and changing the model angle for viewing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the viewing angle viewing position.
In this embodiment, the selection key of the right-hand control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand control handle is used for observing the internal attribute of the whole automobile part model.
In this embodiment, in step S4, a, the wireless communication connection relationship is an ethernet network communication connection.
In this embodiment, the components of the whole automobile in step S5, b include, but are not limited to, a main body bracket, a power system, a transmission mechanism, a chassis mechanism, a control system, a circuit connection system, a vehicle hub and caliper system, a suspension system, an air intake system, an exhaust system, a brake system, a steering system, an ignition mechanism, a fuel oil mechanism, a cooling system, a lubrication system, and an electrical instrument system.
In this embodiment, the details of the automotive parts in step S5, b include, but are not limited to, an engine, a propeller shaft, a transmission, a battery, a chassis, a frame, a hub, a bumper, a door, a fender, a windshield, a pillar, a seat, a center console, a hood, a trunk lid, a sunroof, a roof, a door lock, a armrest, a floor, a door sill, an airbag, a seat belt, a brake master cylinder, a brake cylinder, a vacuum booster, a brake pedal assembly, a brake disc, a brake drum, a brake pad, a brake oil pipe, an ABS pump, a camshaft, an intake valve, an exhaust valve, a rocker arm shaft, a lifter, and a push rod.
Embodiment two:
a VR method for displaying parts of a whole automobile comprises the following steps:
S1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. Performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the step S1, e at the equilibrium position of the system, and ending the modeling;
S2, establishing data communication connection;
a. Establishing wireless communication connection between the VR glasses, the left-hand control handle and the right-hand control handle provided with the displacement sensor and a computer for drawing the automobile part model in the step S1 through a wireless transceiver module;
S3, importing automobile part model data;
a. The method comprises the steps that S2, automobile part model information drawn by a computer with a communication connection relation established in step a is imported into VR glasses through a wireless transceiver module;
S4, data sharing;
a. Establishing a wireless communication connection relationship between the VR glasses with the vehicle model data information and the rest of the VR glasses;
b. transmitting the vehicle model data information into a plurality of VR glasses through the data receiving and transmitting function of the VR glasses, and completing data sharing;
S5, observing and displaying the whole vehicle parts;
a. A user holding VR glasses performs displaying and checking work on the whole automobile through a left master control handle and a right master control handle;
b. A user holding VR glasses selects the components and the details of the parts of the whole automobile through the left master control handle and the right master control handle, and the components and the details of the parts are conveniently observed and checked.
In this embodiment, in step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
In this embodiment, the directions are all positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
In this embodiment, in steps S1 and b, let X, X be the coordinate matrix of each point, subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
In this embodiment, in step S2, a, the left-hand control handle and the right-hand control handle are mainly used for positioning the viewing path in advance, the selection key of the left-hand control handle is used for controlling and changing the model angle for viewing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the viewing angle viewing position.
In this embodiment, the selection key of the right-hand control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand control handle is used for observing the internal attribute of the whole automobile part model.
In this embodiment, in step S4, a, the wireless communication connection relationship is an ethernet network communication connection.
In this embodiment, the components of the whole automobile in step S5, b include, but are not limited to, a main body bracket, a power system, a transmission mechanism, a chassis mechanism, a control system, a circuit connection system, a vehicle hub and caliper system, a suspension system, an air intake system, an exhaust system, a brake system, a steering system, an ignition mechanism, a fuel oil mechanism, a cooling system, a lubrication system, and an electrical instrument system.
In this embodiment, the details of the automotive parts in step S5, b include, but are not limited to, an engine, a propeller shaft, a transmission, a battery, a chassis, a frame, a hub, a bumper, a door, a fender, a windshield, a pillar, a seat, a center console, a hood, a trunk lid, a sunroof, a roof, a door lock, a armrest, a floor, a door sill, an airbag, a seat belt, a brake master cylinder, a brake cylinder, a vacuum booster, a brake pedal assembly, a brake disc, a brake drum, a brake pad, a brake oil pipe, an ABS pump, a camshaft, an intake valve, an exhaust valve, a rocker arm shaft, a lifter, and a push rod.
According to the VR method for displaying the parts of the whole automobile, when the VR method is used, an author can wear VR equipment and an active control handle, so that the whole automobile parts can be visited and displayed, a learner can know the whole automobile structure fully, and the learning effect is improved;
Meanwhile, other people can establish a network connection relation with the main VR glasses through the Ethernet, so that data can be conveniently imported and transmitted, and in actual use, unified management and study can be conveniently carried out by a plurality of people, so that the method is effectively applicable to the education and teaching environment of schools, the learning quality of students is improved, the learning effect is improved, the displayed automobile (all parts of the automobile) is controlled to be enlarged or reduced through the left control handle and the right control handle, meanwhile, the automobile parts can be selected, the selected automobile parts can be independently extracted, and the parts can be switched to different angles for viewing through the operating rod, so that the method has a better education and teaching effect;
the technical mode of the automobile integral parts displayed through VR can be used for selecting corresponding parts to be consulted according to own requirements, the complicated link of middle data turning is omitted, the data of parts are convenient to change and replace, the effect of installing different parts at the same part can be checked, the traditional real object demonstration process is replaced, the waste of paper data is reduced, automobile parts required by automobile factory testing, maintenance and training colleges are reduced, and the service time and service life of each part are improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A VR method for displaying parts of a whole automobile is characterized in that: the method comprises the following steps:
S1, modeling of parts of a whole automobile;
a. Drawing a vertical view of a vehicle model needing VR display, and making related simplifying assumptions and definitions;
b. defining a coordinate matrix of each coordinate point on the vertical plane of the automobile model;
c. Performing kinematic analysis on the system based on the geometric relationship in the vertical plane of the automobile model by using a displacement matrix method;
d. Defining a stress matrix of each coordinate point;
e. taking a certain instant in the motion process of the system, analyzing the stress conditions of each research object, and carrying out dynamics analysis;
f. Linearizing the model, namely linearizing the equation obtained in the steps S1 and e at the equilibrium position of the system, and ending the modeling;
S2, establishing data communication connection;
a. Establishing wireless communication connection between the VR glasses, the left-hand control handle and the right-hand control handle provided with the displacement sensor and a computer for drawing the automobile part model in the step S1 through a wireless transceiver module;
S3, importing automobile part model data;
a. The method comprises the steps that S2, automobile part model information drawn by a computer with a communication connection relation established in step a is imported into VR glasses through a wireless transceiver module;
S4, data sharing;
a. Establishing a wireless communication connection relationship between the VR glasses with the vehicle model data information and the rest of the VR glasses;
b. transmitting the vehicle model data information into a plurality of VR glasses through the data receiving and transmitting function of the VR glasses, and completing data sharing;
S5, observing and displaying the whole vehicle parts;
a. A user holding VR glasses performs displaying and checking work on the whole automobile through a left master control handle and a right master control handle;
b. A user holding VR glasses selects the components and the details of the parts of the whole automobile through the left master control handle and the right master control handle, and the components and the details of the parts are conveniently observed and checked.
2. The method for VR displaying parts of a whole automobile according to claim 1, the method is characterized in that: in the step S1, a, the relevant assumptions and definitions include: definition: AD is a part of an automobile, S point is a sprung mass centroid, T point is a tire centroid, r point is a contact point between a tire and the ground, A, M points are connection points between a suspension and an automobile body, B, C points are mounting points of a spring damper, r point is a tire grounding point, theta is an included angle between a rod AD and the horizontal direction, and an included angle between a control arm and the positive direction of a Y axis is positive in the anticlockwise direction; θ is the angle between the rod AD and the horizontal direction, the angle between the axis of the tire and the vertical direction, and the counterclockwise direction is positive; delta is the expansion and contraction amount of the spring damper, d is the transverse displacement of the contact point of the tire and the ground, alpha is the included angle between the rod MD and the vertical direction, gamma is the included angle between the rod AM and the rod AD, z is the sprung mass displacement, and z is the unsprung mass displacement.
3. The method for VR displaying parts of a whole automobile according to claim 2, the method is characterized in that: the directions are positive upwards; is the component of the unsprung mass acceleration in the Y direction; is the component of the unsprung mass acceleration in the Z direction; z is the road surface input displacement, and the directions are positive upwards; the lever length am=l, ad=l, md=l, where L varies with the control arm pivot angle θ, and the extension/contraction amount δ=l-L of the spring damper is set to L when the lever length is at the equilibrium position.
4. The method for VR displaying parts of a whole automobile according to claim 1, the method is characterized in that: in the step S1, b, let X, X be the coordinate matrix of each point, subscript "0" represents the initial coordinate of the point, and let the coordinate expression of the J point be: j= (J, J), J and J represent coordinates of each point in Y and Z directions, and the J point is replaced with a coordinate point a, B, C, D, M, T in the automobile model elevation view, then:
X＝[B,C,T,D],X＝[A,D,M],X＝[B,C,D,M]。
5. a VR display method for a finished automobile component as set forth in claim 3 wherein: in the steps S1 and f, the model linearization data information includes the sheet metal coordinate position and the chassis coordinate position set in the automobile data model, and the appearance and geometric dimension data information of the hub, the automobile body and the chassis structure.
6. The method for VR displaying parts of a whole automobile according to claim 1, the method is characterized in that: and S2, the left-hand control handle and the right-hand control handle in the step a are used for positioning the watching path in advance, the selection key of the left-hand control handle is used for controlling and changing the angle of the model for observing the integral part of the automobile, and the trigger key of the left-hand handle simulator is used for switching the position for viewing angle observation.
7. A kind of according to claim 6 VR shows the method of the parts of the whole automobile, the method is characterized in that: the selection key of the right-hand control handle is used for controlling and observing the speed of the assembly flow of the whole automobile parts, and the trigger key of the right-hand control handle is used for observing the internal attribute of the whole automobile part model.
8. The method for VR displaying parts of a whole automobile according to claim 1, the method is characterized in that: and S4, the wireless communication connection relation in the step a is Ethernet network communication connection.
9. The method for VR displaying parts of a whole automobile according to claim 1, the method is characterized in that: the components of the whole automobile in the step S5, b comprise a main body support, a power system, a transmission mechanism, a chassis mechanism, a control system, a circuit connection system, a vehicle hub and vehicle caliper system, a suspension system, an air inlet system, an exhaust system, a braking system, a steering system, an ignition mechanism, a fuel oil mechanism, a cooling system, a lubrication system and an electric instrument system.
10. The VR display method of claim 1, further comprising the step of: the automobile part details in the step S5, b comprise an engine, a transmission shaft, a gearbox, a battery, a chassis, a frame, a hub, a bumper, a vehicle door, a fender, a windshield, a column, a seat, a center console, an engine cover, a trunk cover, a skylight, a roof, a door lock, an armrest, a floor, a threshold, an airbag, a safety belt, a brake master cylinder, a brake cylinder, a vacuum booster, a brake pedal assembly, a brake disc, a brake drum, a brake pad, a brake oil pipe, an ABS pump, a cam shaft, an air inlet valve, an exhaust valve, a rocker arm shaft, a tappet and a push rod.
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| CN108766081A (en) * | 2018-04-28 | 2018-11-06 | 天津卡达克数据有限公司 | A kind of automobile detachable training system based on VR |
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