CN101187598A - Resistance emulation device of automobile electric power steering system experimental platform - Google Patents
Resistance emulation device of automobile electric power steering system experimental platform Download PDFInfo
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- CN101187598A CN101187598A CNA2007100563641A CN200710056364A CN101187598A CN 101187598 A CN101187598 A CN 101187598A CN A2007100563641 A CNA2007100563641 A CN A2007100563641A CN 200710056364 A CN200710056364 A CN 200710056364A CN 101187598 A CN101187598 A CN 101187598A
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Abstract
The invention discloses a resistance simulating mechanism of a vehicle electric power steering system test bench, which aims to overcome the problem of extremely high cost, low testing accuracy and hydraulic fluid leakage and the like. The invention comprises a car model (1), a motor controller (2), a decelerator (3), a resistance simulation executive motor (4), a resistance simulation steering device (5) and a thrust transducer (6). The power supply input end of the resistance simulation executive motor (4) is connected with a wire output end of the motor controller (2), an output shaft of the resistance simulation executive motor (4) is connected with an input shaft of the decelerator (3), an output shaft of the decelerator (3) is fixedly connected with the input end of the resistance simulation steering device (5), the output end of the resistance simulation steering device (5) is fixedly connected with one end of the thrust transducer (6), the other end of the thrust transducer (6) is fixedly connected with the input end of an electric power-assisted steering system (7) for measuring, and a signal output end of the thrust transducer (6) is connected with a signal input end of the motor controller (2).
Description
Technical field
The present invention relates to a kind of automobile steering system experiment table, more particularly, it relates to a kind of automobile electric power steering system experimental resistance simulation mechanism.
Background technology
At present, electric boosting steering system is widely used in automobile industry, and its related experiment platform product also emerges in an endless stream.Experiment table has irreplaceable effect in the exploitation of electric boosting steering system and test.For the exploitation steering, the bench test link that is absolutely necessary has only by sufficient experiment table test, and steering just can be carried out real train test, can save the development time on the one hand, can guarantee its reliability on the other hand; For the finished product steering, experiment table can be finished the test of parameters accurately and quickly, saves great amount of manpower and material resources.The steering drag simulation mechanism is an ingredient very important in the experiment table, and it is mainly used in the actual resistance of simulating vehicle when travelling, and improves the authenticity and the accuracy of platform experiment.But existing product or too simple can not satisfy testing requirements, such as utilizing the spring simulated resistance; Needing increases miscellaneous part, and cost is too high, such as utilizing electronic cylinder that resistance is provided; And have a lot of insurmountable drawbacks, such as utilizing the hydraulic cylinder simulated resistance, its leakage problem still can't finely solve at present.At present also do not utilize the Electric Machine Control steering gear to carry out the precedent of resistance simulation.The advantage of this scheme is to gather materials on the spot, utilize cheap relatively automobile steering device of cost and direct current generator, speed reduction unit to form the resistance simulation system, can at utmost reduce complexity, the cost squeeze of system like this and can fundamentally solve problem such as hydraulic fluid leak.
Summary of the invention
The present invention provides a kind of controller control driven by motor steering gear campaign, resistance simulation mechanism of the automobile electric power steering system experimental of simulation steering drag of utilizing in order to overcome the problem that prior art exists.Not only can satisfy the measuring accuracy requirement, and reduce the experiment table cost effectively.
Consult Fig. 2, for solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved.The resistance simulation mechanism of automobile electric power steering system experimental, on the auto model in the existing computing machine of packing into and the basis of electric machine controller, it has increased speed reduction unit, resistance simulation actuating motor, resistance simulation steering gear and force transducer.
The power input of resistance simulation actuating motor is connected with the output terminal electric wire of electric machine controller, the output shaft of resistance simulation actuating motor is fixedlyed connected with reducer input shaft, reducer output shaft is fixedlyed connected with the input end of resistance simulation steering gear, the output terminal of resistance simulation steering gear is fixedlyed connected with an end of force transducer, the other end of force transducer is fixedlyed connected with the input end of electric boosting steering system to be measured, and the signal output part of force transducer is connected with the signal input part line of electric machine controller.
Resistance simulation steering gear described in the technical scheme includes gear shaft and the tooth bar that gear is fixedlyed connected with gear, wheel and rack is to be connected with a joggle, the gear shaft input end is fixedlyed connected with reducer output shaft, the external part of tooth bar is fixedlyed connected with an end of force transducer, and the resistance simulation steering gear is fixed on the iron floor by support; It is the 12V brush direct current motor of DFL01 that described resistance simulation actuating motor adopts model, and motor 4 is fixed on the iron floor by electric machine support.
The invention has the beneficial effects as follows:
1. because the resistance simulation mechanism of automobile electric power steering system experimental has adopted controller that rotating speed of motor and sense of rotation are controlled, and used feedback control strategy, so steering drag can accurately be simulated by the resistance simulation mechanism of automobile electric power steering system experimental;
2. because the resistance simulation mechanism of automobile electric power steering system experimental adopts the relatively cheap automobile steering device of price to cooperate 12V brush direct current motor and gear reducer to form resistance simulation mechanism, effectively reduce the experiment table cost;
3. clean energy resource---electric energy provides power for entire mechanism because the resistance simulation mechanism of automobile electric power steering system experimental adopts, and has fully guaranteed its feature of environmental protection, and then has alleviated the pressure of line service to greatest extent.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is the steering logic block diagram of the resistance simulation mechanism of automobile electric power steering system experimental;
Fig. 2 is the structural representation of the resistance simulation mechanism of automobile electric power steering system experimental;
Among the figure: 1. auto model, 2. electric machine controller, 3. speed reduction unit, 4. resistance simulation actuating motor, 5. resistance simulation steering gear, 6. force transducer, 7. electric boosting steering system, 8. support, 9. iron floor, F. actual resistance, f. theoretical drag, I. Electric Machine Control electric current.
Embodiment:
Below in conjunction with accompanying drawing the present invention is explained in detail:
The resistance simulation mechanism of automobile electric power steering system experimental includes auto model 1, electric machine controller 2, speed reduction unit 3, resistance simulation actuating motor 4, resistance simulation steering gear 5, force transducer 6 and the support 8 in the computing machine of packing into.
There is brush direct current resistance simulation actuating motor 4 to control by 2 couples of 12V of electric machine controller, drive direction and the rotational speed of resistance simulation actuating motor 4 according to expection, thereby driven gear speed reduction unit 3 and resistance simulation steering gear 5 motions, simulating vehicle turns to the resistance when travelling.
Described resistance simulation steering gear 5 includes gear shaft, tooth bar and the resistance simulation steering gear housing that gear is fixedlyed connected with gear.Tooth bar vertically is connected in the housing of resistance simulation steering gear by means of guide rail and chute along the resistance simulation steering gear housing, be that tooth bar can vertically moving back and forth along the resistance simulation steering gear housing, wheel and rack is to be connected with a joggle, the gear shaft fixedly connected with gear becomes the spatial vertical state with vertical line of symmetry of tooth bar, and the gear shaft fixedly connected with gear becomes to be rotationally connected on the resistance simulation steering gear housing by means of Bearing Installation.Resistance simulation steering gear 5 is by being bolted on the support 8, and support 8 is again by being bolted on the iron floor 9.Can certainly be fixed on the worktable that meets the demands.The gear shaft input end is fixedlyed connected (the horizontal conllinear of two axial lines) by means of shaft joint with the output shaft that is fixed on the speed reduction unit 3 on the iron floor 9 by support, and the external part of tooth bar is fixedlyed connected with an end of force transducer 6 with bolt, trip bolt by a sleeve.
It is the 12V brush direct current motor of DFL01 that described resistance simulation actuating motor 4 adopts model.Resistance simulation actuating motor 4 is by being bolted on the electric machine support, electric machine support is again by means of being bolted on the iron floor 9, can certainly be fixed on the worktable that meets the demands, the horizontal conllinear of the two axial lines of the input shaft of the output shaft of resistance simulation actuating motor 4 and speed reduction unit 3, and fixedly connected by means of shaft joint.The input shaft of the output shaft of resistance simulation actuating motor 4 and speed reduction unit 3 in this embodiment, the input end of the output shaft of speed reduction unit 3 and resistance simulation steering gear 5 gear shafts is solidly fixed by shaft joint, and speed reduction unit 3 is in vacant state.
The computing machine that auto model 1 is housed is placed on the control stand, and the output terminal of computing machine is connected with an analog quantity input interface electric wire of electric machine controller 2 on being placed on control stand.The current output terminal of electric machine controller 2 is connected with the power input electric wire of resistance simulation actuating motor 4, the output shaft of resistance simulation actuating motor 4 is fixedlyed connected by means of shaft joint with the input shaft of speed reduction unit 3, speed reduction unit 3 output shafts are fixedlyed connected by means of shaft joint with the input end of resistance simulation steering gear 5, the output terminal of resistance simulation steering gear 5 (external part of tooth bar) passes through a sleeve and bolt with an end of force transducer 6, trip bolt is fixedly connected, and the input end of the other end of force transducer 6 and electric boosting steering system to be measured 7 is also by a sleeve and bolt, trip bolt is fixedly connected.Certainly, electric boosting steering system 7 to be measured also will be by by being bolted on the support 8, and support 8 is again by being bolted on the iron floor 9.Can certainly be fixed on the worktable that meets the demands.The output terminal of the actual resistance analog signals of force transducer 6 is connected with the input end line of the analog signals of electric machine controller 2.
The principle of work of the resistance simulation mechanism of automobile electric power steering system experimental:
Consult Fig. 2, the resistance simulation mechanism of automobile electric power steering system experimental mainly is linked in sequence by 12V DC brush resistance simulation actuating motor 4, speed reduction unit 3, resistance simulation steering gear 5.When electric boosting steering system 7 is experimentized, determine the control corresponding algorithm as required earlier, and it downloaded in the electric machine controller 2 that electric machine controller 2 moves control according to the control algolithm of downloading to Simulation execution motor 4.In order to produce enough big moment of torsion, between Simulation execution motor 4 and resistance simulation steering gear 5, installed speed reduction unit 3 additional, reduction gear ratio is selected according to actual vehicle needs, gives resistance simulation steering gear 5 by speed reduction unit 3 with transmission of power.Resistance simulation steering gear 5 passes to electric boosting steering system 7 by force transducer 6 with resistance, realizes the resistance simulation of electric power steering system experimental.
Consult Fig. 1, shown in the figure is the steering logic of the resistance simulation mechanism of automobile electric power steering system experimental, resistance simulation actuating motor 4 is adopted closed-loop controls, and promptly the theoretical drag f that calculates with the auto model in the computing machine of packing into 1 of electric machine controller 2 and the difference between the actual resistance F in the resistance simulation steering gear 5 are as controlled target (difference is the smaller the better).The working control flow process is: the auto model 1 in the computing machine of packing into calculates the theoretical drag f that turns to according to the steering wheel angle and the speed information of driver's input, and it is passed to resistance simulation electric machine controller 2, resistance simulation electric machine controller 2 is by calculating corresponding Electric Machine Control electric current I, and the Electric Machine Control electric current I passed to resistance simulation actuating motor 4, resistance simulation actuating motor 4 drives resistance simulation steering gear 5 work by speed reduction unit 3, provide steering drag to electric boosting steering system 7, this steering drag (the actual resistance F that is measured by force transducer 6) is transmitted telegram in reply machine controller 2 again, f is poor with theoretical drag, realizes the control to the resistance difference.Constantly the such process of circulation realizes the stepless control to resistance simulation actuating motor 4.Can accurately control the size of the actual steering moment of feeling of driver like this, guarantee the authenticity and the accuracy of resistance simulation.
Claims (3)
1. the resistance simulation mechanism of an automobile electric power steering system experimental, include auto model (1) and electric machine controller (2) in the computing machine of packing into, the output terminal of computing machine is connected with an analog quantity input interface electric wire of electric machine controller (2), it is characterized in that it also includes speed reduction unit (3), resistance simulation actuating motor (4), resistance simulation steering gear (5) and force transducer (6);
The power input of resistance simulation actuating motor (4) is connected with the output terminal electric wire of electric machine controller (2), the output shaft of resistance simulation actuating motor (4) is fixedlyed connected with speed reduction unit (3) input shaft, speed reduction unit (3) output shaft is fixedlyed connected with the input end of resistance simulation steering gear (5), the output terminal of resistance simulation steering gear (5) is fixedlyed connected with an end of force transducer (6), the other end of force transducer (6) is fixedlyed connected with the input end of electric boosting steering system (7) to be measured, and the signal output part of force transducer (6) is connected with the signal input part line of electric machine controller (2).
2. according to the resistance simulation mechanism of the described automobile electric power steering system experimental of claim 1, it is characterized in that, described resistance simulation steering gear (5) includes gear shaft and the tooth bar that gear is fixedlyed connected with gear, wheel and rack is to be connected with a joggle, the gear shaft input end is fixedlyed connected with speed reduction unit (3) output shaft, the external part of tooth bar is fixedlyed connected with an end of force transducer (6), and resistance simulation steering gear (5) is fixed on the iron floor (9) by support (8).
3. according to the resistance simulation mechanism of the described automobile electric power steering system experimental of claim 1, it is characterized in that, it is the 12V brush direct current motor of DFL01 that described resistance simulation actuating motor (4) adopts model, and motor 4 is fixed on the iron floor (9) by electric machine support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100563641A CN101187598B (en) | 2007-11-29 | 2007-11-29 | Resistance emulation device of automobile electric power steering system experimental platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100563641A CN101187598B (en) | 2007-11-29 | 2007-11-29 | Resistance emulation device of automobile electric power steering system experimental platform |
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| Publication Number | Publication Date |
|---|---|
| CN101187598A true CN101187598A (en) | 2008-05-28 |
| CN101187598B CN101187598B (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100563641A Expired - Fee Related CN101187598B (en) | 2007-11-29 | 2007-11-29 | Resistance emulation device of automobile electric power steering system experimental platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20090980A1 (en) * | 2009-06-05 | 2010-12-06 | Emmetec Srl | "UNIVERSAL ELECTRIC POWER STEERING UNITS TEST DEVICE" |
| CN103353404B (en) * | 2013-07-02 | 2015-07-22 | 杭州电子科技大学 | Test bed for simulating steer-by-wire road-surface resistance force of automobile |
| CN105182968A (en) * | 2015-09-24 | 2015-12-23 | 吉林大学 | Hardware-in-loop performance testing stand suitable for automobile C-EPS system |
| CN107153009A (en) * | 2016-03-03 | 2017-09-12 | 重庆邮电大学 | A kind of EPS testing stand steering resisting moment loading methods towards road conditions |
| CN114018605A (en) * | 2021-10-29 | 2022-02-08 | 北京博科测试系统股份有限公司 | Motor loading type steering resistance simulation method and device |
-
2007
- 2007-11-29 CN CN2007100563641A patent/CN101187598B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20090980A1 (en) * | 2009-06-05 | 2010-12-06 | Emmetec Srl | "UNIVERSAL ELECTRIC POWER STEERING UNITS TEST DEVICE" |
| EP2259041A1 (en) * | 2009-06-05 | 2010-12-08 | Emmetec S.r.l. | Universal test device for electric power steering units |
| CN103353404B (en) * | 2013-07-02 | 2015-07-22 | 杭州电子科技大学 | Test bed for simulating steer-by-wire road-surface resistance force of automobile |
| CN105182968A (en) * | 2015-09-24 | 2015-12-23 | 吉林大学 | Hardware-in-loop performance testing stand suitable for automobile C-EPS system |
| CN105182968B (en) * | 2015-09-24 | 2018-08-10 | 吉林大学 | A kind of hardware in loop property test platform suitable for automobile C-EPS systems |
| CN107153009A (en) * | 2016-03-03 | 2017-09-12 | 重庆邮电大学 | A kind of EPS testing stand steering resisting moment loading methods towards road conditions |
| CN114018605A (en) * | 2021-10-29 | 2022-02-08 | 北京博科测试系统股份有限公司 | Motor loading type steering resistance simulation method and device |
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| Publication number | Publication date |
|---|---|
| CN101187598B (en) | 2010-11-24 |
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Granted publication date: 20101124 Termination date: 20111129 |