CN201401478Y - Actively-controlled electromotive torsional vibration damper - Google Patents
Actively-controlled electromotive torsional vibration damper Download PDFInfo
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- CN201401478Y CN201401478Y CN2009200715494U CN200920071549U CN201401478Y CN 201401478 Y CN201401478 Y CN 201401478Y CN 2009200715494 U CN2009200715494 U CN 2009200715494U CN 200920071549 U CN200920071549 U CN 200920071549U CN 201401478 Y CN201401478 Y CN 201401478Y
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Abstract
The utility model provides an actively-controlled electromotive torsional vibration damper and relates to the technical field of vibration reduction for rotary machines. The torsional vibration dampercomprises a fixing module, a relative rotating module, a conductive coil, a magnetic field generator and other components. By utilizing the actively-controlled electromotive torsional vibration damper, the torsional moments with the same frequency, opposite phase positions and corresponding amplitudes can be instantly radiated, so as to achieve the effect of cancelling torsional vibration of theprimitive axis system. The utility model obtains the remarkable damping effect, and can considerably reduce vibration reduction measures adopted according to the demands of the device at the same time.
Description
Technical field
The utility model relates to the antivibration area of rotating machinery.
Background technique
Phenomenon of torsional vibration is a ubiquitous problem in the rotating machinery device, it is that to do cyclic fluctuation caused because torque load is around its average, and moment of torsion and torsional oscillation thereof present the feature of complex periodic in the ordinary course of things, promptly comprised a series of harmonic frequency composition, such as automobile and marine internal combustion engine, propeller driving system, pump mechanism, or the like.When the intrinsic torsional frequency of certain frequency content and structure reached unanimity in such dynamic load, mechanism may produce violent torsional resonance phenomenon, and this very easily causes the damage and the inefficacy of component; Even if for the expection service life of equipment do not have counter productive torsional oscillation by a small margin---this should be a most general current situation, if consider the adverse effect of machinery, also will be the problem that can not be ignored for surrounding enviroment radiation vibration and noise.
As a whole, the method for improving Torsional Vibration can be divided into two big classes: a class relates to device structure itself, and one of them importance is by the vibration characteristics design intrinsic torsional frequency of structure and torque load frequency to be staggered; Also has measure in addition at the function design aspect, as increase the quantity of cylinder for internal-combustion engine, so both pressed torque ripple, improve output power again, but higher for design of plant and manufacturing requirement, and the volume of equipment, weight and cost also significantly increase thereupon.
Another kind of is a kind of special additional device of design or additional function, typical like flying the wheel in conjunction with torshional vibration damper, and these class methods cost comparatively speaking are lower, and are limited for the change of main frame.
General at present practical torshional vibration damper is passive elastic damping formula, promptly utilizes the elastic element separating vibration, hinders vibration with rubber, viscous liquid, motion mechanical energy is converted into frictional heat dissipates; On aufbauprinciple, usually flywheel is divided into two parts, connect by elastic element, relative movement can take place in them in certain elastic range, fill high damping material between them.The greatest drawback of this scheme is: the frequency of the torsional oscillation that modern rotating equipment is born and amplitude can be in very broad scope change apace, and the relatively-stationary vibration damping equipment of system performance obviously can't satisfy and compares higher requirement under this characteristics.
Except the structure of above-mentioned passive type, technical also developed semi-actively controlled, promptly can be in certain scope the special parameter of real time altering elastic element and damping member as required, but the actual effect that is applied in torsional oscillation vibration damping aspect remains to be observed.
Diversely with above two kinds of technical routes be, the utility model belongs to the category of ACTIVE CONTROL formula weakening, these class methods are frequency, amplitude and phase places that utilization one cover control system is dynamically followed the tracks of a plurality of harmonic waves of torsional oscillation, and provide driving current to described electronic torshional vibration damper, make it instantaneously send the moment of torsion that frequency is identical, phase place is opposite, amplitude is corresponding, thereby reach the effect of offsetting torsional oscillation.This method is utilized the advanced technology and the effective control theory of modern integrated circuits, has significantly reduced the vibration reducing measure that need take for equipment itself when obtaining remarkable weakening effect.
The model utility content
The purpose of this utility model provides the electronic torshional vibration damper of a kind of ACTIVE CONTROL type and its implementation, in order to the mode by electromagnetic excitation produce one with the opposite moment of torsion of rotating machinery axle system torsional oscillation direction, offset the torsional oscillation of axle system.
The electronic torshional vibration damper of a kind of ACTIVE CONTROL type is characterized in that this vibration damper includes following constituent element:
Stuck-module, it is rigidly fixed on the axle system;
Relatively rotate module, it is fixed on the axle system by spring;
Conductive coil, it is arranged on stuck-module and relatively rotates on the module one;
Magnetic field generator spare, it is arranged on that and stuck-module of aforementioned conductive coil is not set or relatively rotates on the module, can pass the magnetic field of lead loop in order to produce.
Further, described vibration damper also includes following technical characteristics:
Axle system is provided with brush, in order to switch on to described conductive coil.
Described stuck-module is to realize by the X type fixed structure that the two ends bifurcated extends, and is provided with the conductive coil framework of arc between the two adjacent bifurcateds, and simultaneously relative is provided with another section arc conductive coil framework between two bifurcateds in addition.
The one place at least in the both sides of described conductive coil is provided with magnetic field generator spare.
The adjacent bifurcated of conductive coil is not set, comprises position, two places altogether, the one place at least in this position, two places is provided with the fixed block that relatively rotates the module slewing area in order to qualification.
Relatively rotate two springs that pass through on the module along the rotating shaft system symmetry, be fixed on the axle system.
At aforesaid conductive coil, set at magnetic field generator spare, can produce mutual exclusion magnetic field or inhale magnetic field mutually.
The advantage of the electronic torshional vibration damper of described ACTIVE CONTROL type:
1, can in very wide frequency range, bring into play effectiveness in vibration suppression.
2, pure torsion only is provided on design principle, can not produce the additional radial pressure or the axial force of can not ignore to axle system.
3, output torque is big.
4, low resistance.Metal spring has lower damping characteristic, can bring into play the output torque peak value of this vibration damper so as far as possible.
5, rare earth permanent-magnetic material obtains easily, cost is low.
6, reliable performance, low for environmental requirement, oil resistant bears dirty.Wherein, operating temperature can be near 100 ° Celsius.
7, compact structure can combine installation with the original flywheel of vibration damping object, also can independently install.
8, can on the axle system of described vibration damper, (if combine installation with flywheel, that is exactly on the axle system of flywheel) suitably open vent hole, the air-flow that produces when utilizing it to rotate with axle system cools off.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is the structural representation of the electronic torshional vibration damper of ACTIVE CONTROL type described in the utility model.
Fig. 2 is the side sectional view of the electronic torshional vibration damper of ACTIVE CONTROL type described in the utility model.
Fig. 3 is the structural representation of the conductive coil on the electronic torshional vibration damper of ACTIVE CONTROL type described in the utility model.
Fig. 4 is the flow chart of the implementation method of the electronic torshional vibration damper of ACTIVE CONTROL type described in the utility model.
Embodiment
Shown in each accompanying drawing, the electronic torshional vibration damper of ACTIVE CONTROL type described in the utility model is mainly by relatively rotating module I and stuck-module II forms.
Connect by a pair of spring 14 between them, can make relative resilient and rotate.Spring 14 in this enforcement is a garter spring, and this is typical embodiment and non-limiting.Wherein relatively rotate module I and comprise heart circle 0, inner ring 1, centre circle 2, outer ring 3, and the ndfeb magnet 4,5,6,7 of annular.Its central ring 0, inner ring 1, centre circle 2 and outer ring 3 are fixed together by a pair of spoke beam 8 of the 180 ° of central angles of being separated by.
Wherein Huan Xing ndfeb magnet 4,5,6,7 belongs to permanent magnet, is a kind of embodiment of the magnetic field generator in the utility model, and other also comprises the magnetic field of realizing by electromagnetic effect, as utilizes conductive coil to produce magnetic field, or the like.
Between spoke beam 8, magnetic patch 4 and 5 usefulness tackiness agents or other suitable mode are fixed on the outside of inner ring 1, and are the symmetric arrangement state.Similarly, magnetic patch 6 and 7 usefulness tackiness agents or other suitable mode are fixed on the inboard of outer ring 3, also are symmetry shape between spoke beam 8, and magnetic patch 4 and 6, magnetic patch 5 and 7 be respectively across centre circle 2 positioned opposite like this, and the magnetic direction of magnetic patch along circle radially.
In the said structure, all arrange magnetic field generator in the both sides of described conductive coil 11 and 12, in addition, can also be separately in the inboard or the outside arrange magnetic field generator.
Stuck-module II comprises a pair of annular collar 9 and 10, twines and be fixed on the conductive coil 11 and 12 on the lasso, and X type fixed support 13.Lasso 9 and 10 is enclosed within respectively on the centre circle 2, symmetric arrangement between spoke beam 8, therefore the inboard of lasso does not contact fully with centre circle 2, can move freely with respect to centre circle 2, Here it is described electronic torshional vibration damper relatively rotate the reason place that module I can the relative fixed module ii be rotated.
Tightly around also using adhesive on lasso 9, conductive coil 12 is tightly around also using adhesive on lasso 10 for conductive coil 11.Such structure makes the both sides of each group copper coil all be between described magnetic patch and the centre circle 2 in the air gap of formed annular radial magnetic field, and the trend of copper coil, also is sense of current, is vertical with magnetic direction.Described lasso need adopt nonmagnetic substances such as copper, aluminium or plastics.
In order to allow lasso 10 be enclosed within on the centre circle 2, centre circle 2 can disconnect at spoke Liang8Chu, earlier lasso 10 is enclosed within the outside of centre circle 2, then centre circle 2 is fixed by bolts on the spoke beam 8.
Except above-mentioned member, described vibration damper other parts also comprise: fixed block 15, axle 16, rolling bearing 17, brush 18, spring seat 19 and spring seat 20.
In the X type fixed support 13, be not provided with between the adjacent bifurcated of conductive coil 12, comprise position, two places altogether, the one place at least in this position, two places is provided with the fixed block 15 that relatively rotates the module I slewing area in order to qualification.
Fixed block 15 is fixed on the position of close spoke beam 8 on the centre circle 2, and its effect is the motion of restriction lasso, prevents that lasso impacts spoke beam 8 under the overload situations.
In fact axle 16 is exactly a part that needs the rotating machinery axle system of vibration damping, and rolling bearing 17 is supported on heart circle 0 on the axle 16, makes the above-mentioned module I that relatively rotates at heart circle 0 and place thereof to rotate with respect to axle system.
The said fixing module ii, promptly lasso 9 and 10 comprises top coil 11 and 12, is fixed on the axle 16 by support 13, rotates with axle system.
Aforesaid a pair of spring 14 is arranged symmetrically in the outside of outer ring, each helical spring end is fixed on the outer ring by spring seat 19, the other end by spring seat 20 be fixed on axle rigid joint axle system together on, can directly be fixed on the axle by the structure of extending.
Like this, the above-mentioned module I that mainly relatively rotates can be by rolling bearing 17 under the effect of spring 14, with respect to said fixing module ii and the running shaft system that acted on, swings back and forth around its stable position.
Further set forth other structure outline of described torshional vibration damper:
For example and without limitation, above-mentioned magnetic patch and centre circle 2 formed air-gap magnetic field directions be circular radially, in the magnetic field generator of described centre circle 2 both sides positioned opposite, the relation between the magnetic direction can have two kinds of selection schemes:
First kind is that the magnetic direction of the magnetic patch of both sides positioned opposite repels each other on the contrary, and second kind is that both phase homophases are inhaled.Introduce respectively below:
First kind of scheme at first is described.This moment, magnetic patch 4 was relative mutual exclusions (on the contrary) with 6 magnetic directions across centre circle 2, equally another to organize across the magnetic patch 5 of centre circle 2 also be (on the contrary) of relative mutual exclusion with 7 magnetic direction; For strengthening the magnetic induction intensity of air gap between centre circle 2 and the both sides magnetic patch, magnetic patch adopts high performance rare earth permanent magnet ndfeb magnet, centre circle 2 adopts the soft magnetic material of high magnetic permeability, and the gap between centre circle 2 and the magnetic patch is keeping as much as possible little under the discontiguous prerequisite between lasso inboard and centre circle 2, the lasso outside and the magnetic patch; When the copper coil on the lasso outside being enclosed within centre circle 2 is switched on, current direction in the copper coil in magnetic field, centre circle 2 both sides is opposite, and the direction in magnetic field, both sides also is opposite, that is to say, the current in wire of conductive coil 11 or 12 in magnetic patch 4 magnetic fields and the current in wire in magnetic patch 6 magnetic fields are reverse, and the magnetic direction of magnetic patch 4 also is opposite with the magnetic direction of magnetic patch 6.Like this according to describing the Ampere law that concerns between magnetic induction intensity, electric current and the Ampere force, the active force that magnetic field, both sides gives conductive coil is along circumferencial direction also in the same way just, the amplitude of active force is directly proportional with electric current [strength, and direction changes with sense of current.
Owing to the complete in a circumferential direction symmetric arrangement of two groups of conductive coils 11 and 12, therefore control the trend of electric current by the connection between described two groups of copper coil end lines, make that two groups of conductive coils 11 are opposite with the 12 lucky equal and opposite in direction of peripheral force, the directions that produce in the magnetic field, and be all clockwise or be all counterclockwise, so just formed a magnetic force pure torsion, its numerical value should equal one group of coil and produce the diameter that the peripheral force sum multiply by centre circle 2 center lines in magnetic field, both sides.
Under the effect of above-mentioned magnetic field pure torsion, the above-mentioned module I that relatively rotates will rotate with respect to said fixing module ii and axle system, and this causes described camber of spring to cause spring force.Because described a pair of spring symmetric arrangement in a circumferential direction, the power that therefore described a pair of spring produces is that equal and opposite in direction, direction are opposite, and is all clockwise or is all counterclockwise, has so also formed a spring force pure torsion.
Present second kind of scheme of brief description.This moment, magnetic patch 4 was that homophase is inhaled mutually with 6 magnetic directions across centre circle 2, same another group also is homophase suction mutually across the magnetic patch 5 of centre circle 2 and 7 magnetic direction, but since coil in magnetic patch 4 (magnetic patch 5) magnetic field current in wire and the current in wire in magnetic patch 6 (magnetic patch 7) magnetic field be reverse, so, the peripheral force that described conductive coil produces in magnetic field, both sides is reverse, the moment of torsion that produces of each the group coil peripheral force that should equal coil one side multiply by the width between two lateral coils like this, total and the magnetic force pure torsion be exactly the moment of torsion sum that two groups of coils produce.
In the utility model, the implementation method of the electronic torshional vibration damper of this ACTIVE CONTROL type, in conjunction with the description of front and shown in Figure 4, this method mainly includes following steps:
Step 4, control system is switched on to conductive coil, produces the moment of torsion consistent with the axle system torsion frequency, that amplitude is suitable, phase place is opposite, in order to offset the torsional oscillation of axle system.
Described here control system comprises the arithmetic processor that can carry out calculation process to the detected signal that sensor obtained and send control command, and stores in order to realize program of the present utility model.
This sensor, vibration state that should the detection axis system, such as, can adopt the torsional oscillation sensor to realize, certainly, do not do any qualification yet, as set up torque sensor etc.
In conjunction with specific embodiment, sum up the working principle of the electronic torshional vibration damper of described ACTIVE CONTROL type:
Described conductive coil 11 or 12 and magnetic field generator in the interaction of magnetic patch, produce around the magnetic field of described axle 16 pure torsion, and the size and the direction of size and Orientation control torque that can be by electric current.The moment of torsion that changes is applied to the above-mentioned module I that relatively rotates, the pure torsion around axle 16 that causes this partial vibration and cause described spring to change.According to newton's active force and reaction force principle, above-mentioned magnetic force moment of torsion and spring torque also affact the said fixing module ii, and then are delivered on the rotating machinery axle system.
Therefore, configuration one cover control system, it can real-time detected rotating machinery axle system torsional oscillation in amplitude, frequency and the phase place of the outstanding harmonic wave of some compositions, and provide in view of the above that frequency is identical, the current signal of amplitude and phase place correspondence, drive described torshional vibration damper and send corresponding magnetic field moment of torsion and spring torque, affact in the running shaft system produce the identical but opposite amplitude of frequency torsional oscillation to offset the original torsional oscillation of axle system.
The size of output torque depends on that magnetic field is for the size of the circumferential Ampere force of hot-wire coil and the peripheral force distance to axle 16 axis; And Ampere force is proportional to hot-wire coil length and electric current [strength vertical with magnetic direction in magnetic induction intensity, the magnetic field.In described device, the diameter of vibration damper circle is big more, and then the arm of force of moment is also big more, and simultaneously the camber line of magnetic patch and lasso also can be long more, thus around the length of coil in magnetic field just long more; In addition, the vibration damper circle is thick more on the axial direction of running shaft system, and then magnetic patch, centre circle 2 and lasso also can correspondingly thicken, and then the length of coil in magnetic field is just long more, and can be by lattice coil with its length that is multiplied; At last, the copper conductor sectional dimension of Shi Heing can provide several amperes electric current and be unlikely to overheated.These characteristics make and are very beneficial for ACTIVE CONTROL type vibration damping or torsional test demand from the small-size shaft system to large-scale axle system by our output torque of flexible design vibration damper within a large range.
More than be to description of the present utility model, and unrestricted, based on other embodiment of the utility model thought, also within protection domain of the present utility model.
Claims (7)
1, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type is characterized in that this vibration damper includes following constituent element:
Stuck-module, it is rigidly fixed on the axle system;
Relatively rotate module, it is fixed on the axle system by spring;
Conductive coil, it is arranged on stuck-module and relatively rotates on the module one;
Magnetic field generator spare, it is arranged on that and stuck-module of aforementioned conductive coil is not set or relatively rotates on the module, can pass the magnetic field of lead loop in order to produce.
2, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type according to claim 1, it is characterized in that: axle system is provided with brush, in order to switch on to described conductive coil.
3, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type according to claim 1, it is characterized in that: described stuck-module is to realize by the X type fixed structure that the two ends bifurcated extends, be provided with the conductive coil framework of arc between the two adjacent bifurcateds, simultaneously relative is provided with another section arc conductive coil framework between two bifurcateds in addition.
4, according to claim 1 or the electronic torshional vibration damper of 3 described a kind of ACTIVE CONTROL types, it is characterized in that: the one place at least in the both sides of described conductive coil is provided with magnetic field generator spare.
5, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type according to claim 3 is characterized in that: the adjacent bifurcated of conductive coil is not set, comprises position, two places altogether, the one place at least in this position, two places is provided with the fixed block that relatively rotates the module slewing area in order to qualification.
6, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type according to claim 1 is characterized in that: relatively rotate two springs that pass through on the module along the rotating shaft system symmetry, be fixed on the axle system.
7, the electronic torshional vibration damper of a kind of ACTIVE CONTROL type according to claim 1 is characterized in that: set at aforesaid conductive coil at magnetic field generator spare, and can produce mutual exclusion magnetic field or inhale magnetic field mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200715494U CN201401478Y (en) | 2009-05-02 | 2009-05-02 | Actively-controlled electromotive torsional vibration damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009200715494U CN201401478Y (en) | 2009-05-02 | 2009-05-02 | Actively-controlled electromotive torsional vibration damper |
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| CN201401478Y true CN201401478Y (en) | 2010-02-10 |
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| CN2009200715494U Expired - Lifetime CN201401478Y (en) | 2009-05-02 | 2009-05-02 | Actively-controlled electromotive torsional vibration damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550986B (en) * | 2009-05-02 | 2011-06-22 | 罗清 | Actively-controlled electronic torque vibration isolator and achieving method thereof |
| CN102802868A (en) * | 2010-03-02 | 2012-11-28 | 辛涅提克兰迪斯有限公司 | A counterforce mechanism and methods of operation thereof |
| CN114198458A (en) * | 2020-09-17 | 2022-03-18 | 舍弗勒技术股份两合公司 | Vehicle damper and vehicle |
-
2009
- 2009-05-02 CN CN2009200715494U patent/CN201401478Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550986B (en) * | 2009-05-02 | 2011-06-22 | 罗清 | Actively-controlled electronic torque vibration isolator and achieving method thereof |
| CN102802868A (en) * | 2010-03-02 | 2012-11-28 | 辛涅提克兰迪斯有限公司 | A counterforce mechanism and methods of operation thereof |
| US9789578B2 (en) | 2010-03-02 | 2017-10-17 | Fives Landis Limited | Counterforce mechanism and methods of operation thereof |
| CN114198458A (en) * | 2020-09-17 | 2022-03-18 | 舍弗勒技术股份两合公司 | Vehicle damper and vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100210 Effective date of abandoning: 20090502 |