CN203502238U - Apparatus for testing electric power steering system - Google Patents
Apparatus for testing electric power steering system Download PDFInfo
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- CN203502238U CN203502238U CN201320470239.6U CN201320470239U CN203502238U CN 203502238 U CN203502238 U CN 203502238U CN 201320470239 U CN201320470239 U CN 201320470239U CN 203502238 U CN203502238 U CN 203502238U
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Abstract
The utility model discloses an apparatus for testing an electric power steering system, aiming at solving the problems of low control accuracy of a resistance device, complicated drive system, simple vehicle model, and oil leakage of a hydraulic system. The apparatus comprises a T-shaped groove platform, two linear motor assembly mechanisms, two steering gear fixing clamp assemblies, a steering tubular column fixing clamp assembly, a steering wheel simulation driving mechanism and a driving simulator assembly. A voltage-stabilized power supply, a power supply cabinet and a measurement and control cabinet are fixed on the foundation around the T-shaped groove platform. The steering gear fixing clamp assemblies are fixed on the left side of the T-shaped groove platform. Linear motors are installed on the T-shaped groove platform on the outer side of the stationary steering gear fixing clamp assemblies. The output ends of the linear motors are connected with two ends of a steering gear fixed on the steering gear fixing clamp assemblies. The driving simulator assembly is fixed on the right side of the T-shaped groove platform. The steering tubular column fixing clamp assembly is fixed on the T-shaped groove platform between the steering gear and the driving simulator assembly. The steering wheel simulation driving mechanism is inserted in a steering tubular column.
Description
Technical field
The utility model relates to a kind of test unit of testing automobile parts performance, more particularly, the utility model relates to a kind ofly can carry out automobile electric power-assisted steering resistance simulation, real-time vehicle dynamics emulation and controlling of sampling, can carry out the automobile electric booster steering system test unit of electric boosting steering system assembly and sub-unit performance test simultaneously.
Background technology
Technology has obtained significant progress to electric power steering (Electric Power Steering is called for short EPS) at home, is the study hotspot of current domestic steering technique.How under the environment in laboratory, to carry out the test of electric boosting steering system performance and the evaluation of Controlling Strategy of Electric Power Steering System, be the problem that researcher need to consider emphatically.Reasonably load mode, simulated environment and real-time controlling of sampling true to nature are that electric boosting steering system performance testing device need to solve key issue.
At present, domestic had many enterprises, institution of higher learning to develop electric boosting steering system performance testing device, but domestic electric boosting steering system performance testing device adopts hydraulic actuator or spring to load more, complicated, loaded down with trivial details or the actual steering resistance that can not real simulation automobile of loading system.Although adopt motor to load steering in part new automobile electric boosting steering system proving installation, but its load instructions take simply vehicle dynamic model as basic calculation out, motor loads the general electric rotating machine distribution transforming speed variator that adopts and realizes straight line loading, kinematic train is more, be difficult to guarantee to load the simulation precision of resistance, the control system that also has domestic electric boosting steering system performance testing device is not real-time conventionally, can not carry out real-time vehicle dynamics simulation, can not provide real-time vehicle simulated environment for electric boosting steering system performance test, can not utilize the control system of proving installation self to control in real time actuator (as loading motor).
Summary of the invention
Technical problem to be solved in the utility model is to have overcome existing drag devices to have that control accuracy is low, kinematic train is complicated, auto model is simple and the technical matters of oil leakage of hydraulic system, and a kind of electric power-assisted steering system tester is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described electric power-assisted steering system tester comprises observing and controlling cabinet, T-shaped groove platform, No. 1 linear electric motors assembly mechanism, No. 2 linear electric motors assembly mechanisms, stabilized voltage supply, power cabinet, No. 1 steering gear stationary fixture assembly, No. 2 steering gear stationary fixture assemblies, steering column stationary fixture assembly, bearing circle analog-driven mechanism and vehicle driving simulator assembly, No. 1 described steering gear stationary fixture assembly is identical with No. 2 steering gear stationary fixture assembly structures, No. 1 steering gear stationary fixture assembly, No. 2 steering gear stationary fixture assembly all includes firm banking, circular slide rail, long swivel slide, short swivel slide, steering gear horizontal adjustment fixture and steering gear fixed support.
The bottom of circular slide rail is weldingly fixed on firm banking, the axis of rotation of circular slide rail is parallel with the base plate in firm banking, short swivel slide is interior and with bolts with the gathering sill that long swivel slide is arranged on the circular slide rail left and right sides successively, steering gear fixed support is weldingly fixed on short swivel slide, upper supporting plate in steering gear fixed support is vertical with the left side of short swivel slide, upper supporting plate in steering gear fixed support is parallel with the axis of rotation of circular slide rail, and steering gear horizontal adjustment fixture is bolted to the left end of upper supporting plate in steering gear fixed support.
Steering column stationary fixture assembly described in technical scheme includes tubing string fixture lifting sliding rail, rotation adjustment device, display, display bracket, lifting fixed head assembly and the steering column stationary fixture that 2 nested structures are identical.The tubing string fixture lifting sliding rail that 2 nested structures are identical is arranged on T-shaped groove platform vertically, display bracket two ends adopt the upper end that is bolted to the tubing string fixture lifting sliding rail that 2 nested structures are identical, the two ends of the tubing string fixture turning axle in lifting fixed head assembly adopt and are bolted on the tubing string fixture lifting sliding rail that 2 nested structures of display bracket below are identical, 1 end of tubing string fixture turning axle is fixedly connected with the nut in the bolt and nut pair of vertical installation in lifting fixed head assembly simultaneously, control hand wheel is fixedly connected with the upper end of screw rod, steering column stationary fixture is arranged on tubing string fixture turning axle by rotation adjustment device, display is arranged on the top end face of display bracket.
Lifting fixed head assembly described in technical scheme comprises tubing string fixture turning axle, 2 lifting fixed head, control hand wheel and screw pairs that structure is identical.The two ends of tubing string fixture turning axle and 2 lifting fixed head employing welding manner connections that structure is identical, leading screw is arranged on tubing string fixture lifting sliding rail as being rotationally connected vertically by bearing, control hand wheel is arranged on the upper end of leading screw for being fixedly connected with, and the nut being sleeved on leading screw is fixedly connected with the lifting fixed head that is fixed on tubing string fixture turning axle one end.
Steering column stationary fixture described in technical scheme includes T-shaped frid, steering column holder, steering column and steering column and clamps.Steering column is clamped and is fixed on steering column holder by steering column, and the steering column holder that is fixed with steering column adopts and is bolted on the right side of T-shaped frid.Described steering column holder comprises fixed base plate, upper support seat and lower support seat.Fixed base plate is rectangular slab class formation part, is vertically arranged with the rectangular through hole of two installation set bolts that are parallel to each other.The left end of upper support seat adopts welding or bolt to be fixedly connected with the upper end of fixed base plate right side, the right-hand member of upper support seat is provided with the semicircle open slot that steering column is installed, on the right notch end face of semicircle open slot, be provided with the seat of clamping that steering column is clamped is installed, lower support seat is C shape structural member, the left end of lower support seat adopts welding or bolt to be fixedly connected with the lower end of fixed base plate right side, and the right-hand member of the lower support seat of C shape is provided with axis of rotation perpendicular to the tapped through hole of fixed base plate.
Rotation adjustment device described in technical scheme includes fixture and 4 rolling clamp clamping screws that structure is identical on the whirligig that whirligig lower clamp that 2 structures are identical, 2 structures are identical.On 1 whirligig lower clamp and 1 whirligig, the semicircle opening of fixture one side is staggered relatively, on whirligig lower clamp and whirligig, the top of the semicircle opening of fixture and below are provided with the clamping screw through hole that rolling clamp clamping screw is installed, on every a pair of whirligig lower clamp and whirligig, fixture adopts 2 rolling clamp clamping screws to be fixed on the left side of T-shaped frid, the axis of rotation conllinear of the circular hole that on every a pair of whirligig lower clamp and whirligig, fixture forms.
No. 1 linear electric motors assembly mechanism described in technical scheme is identical with No. 2 linear electric motors assembly mechanism structures, and No. 1 linear electric motors assembly mechanism and No. 2 linear electric motors assembly mechanisms all include linear electric motors framework, linear electric motors, displacement transducer, power sensor and jockey.Linear electric motors are arranged in linear electric motors framework as being slidably connected, and the right-hand member of linear electric motors is threaded with the left end of displacement transducer, and the right-hand member of displacement transducer is threaded with the left end of power sensor, and the right-hand member of power sensor is threaded with jockey.
Stabilized voltage supply described in technical scheme is fixed on the ground in T-shaped groove platform left side, power cabinet is fixed on the ground at stabilized voltage supply cabinet rear, observing and controlling cabinet is fixed on the front right side of T-shaped groove platform or T-shaped groove platform around on the ground of other position, No. 1 steering gear stationary fixture assembly and No. 2 steering gear stationary fixture assemblies are fixed on the centre position on the left of T-shaped groove platform, and the steering gear horizontal adjustment fixture that No. 1 steering gear stationary fixture assembly is identical with 2 structures in No. 2 steering gear stationary fixture assemblies is that mirror is placed relatively symmetrically, No. 1 linear electric motors assembly mechanism and No. 2 linear electric motors assembly mechanisms are arranged on the T-shaped groove platform in outside of No. 1 steering gear stationary fixture assembly and No. 2 steering gear stationary fixture assemblies, the output terminal of No. 1 linear electric motors assembly mechanism and No. 2 linear electric motors assembly mechanisms be fixed on No. 1 steering gear stationary fixture assembly and be connected by pin with the two ends of unit under test steering gear on No. 2 steering gear stationary fixture assemblies, the axis of symmetry of No. 1 linear electric motors assembly mechanism and No. 2 linear electric motors assembly mechanism output terminals and the axis of symmetry conllinear that is fixed on the unit under test steering gear on No. 1 steering gear stationary fixture assembly and No. 2 steering gear stationary fixture assemblies, vehicle driving simulator assembly is fixed on the place, centre position on T-shaped groove platform right side, steering column stationary fixture assembly is fixed on the T-shaped groove platform between unit under test steering gear and vehicle driving simulator assembly, bearing circle analog-driven mechanism is directly plugged on the steering column of steering column stationary fixture assembly.
Compared with prior art the beneficial effects of the utility model are:
1. the embedded development of electric boosting steering system
Consult Fig. 1 and Fig. 2, MABX and the Simulator product of electric power-assisted steering system tester described in the utility model based on dSPACE company, realizes the work such as exploitation, test, demarcation, checking of electric boosting steering system ECU control strategy and hardware;
2. steering gear load simulation
Electric power-assisted steering system tester described in the utility model meets the embedded integration demand of the automatically controlled emulation platform of advanced automobile to electric boosting steering system, realizes the load simulation function of the steering gear machinery system dynamics in steering procedure; The frequency range that can experience according to human body palm and forearm, load simulation system can be to bearing circle road feel (hand-power) the simulation demand of driver's feedback high-precision;
3. target rotation angle automatic executing function
Consult Fig. 1 and Fig. 2, the automatically controlled emulation platform that turns to of electric power-assisted steering system tester described in the utility model can automatically perform the target direction dish corner of the automatically controlled emulation platform output of advanced automobile;
4) automatically controlled steering control system testing mechanical characteristic
The testing mechanical characteristic that turns to assembly (bearing circle is to rack and pinion steering gear part) that electric power-assisted steering system tester described in the utility model is developed for Control Strategy for Electric Power Steering System, such as: rigidity test, damping test, clearance test etc.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is that electric power-assisted steering system tester described in the utility model has been removed the axonometric projection graph that the structure after stabilized voltage supply and power cabinet forms;
Fig. 2-a is the axonometric projection graph of the power cabinet that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 2-b is the axonometric projection graph of the stabilized voltage supply that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 3 is the axonometric projection graph of the linear electric motors assembly that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 4 is the breakdown axonometric projection graph of the linear electric motors assembly that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 5 is the axonometric projection graph of the steering gear stationary fixture that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 6 is the breakdown axonometric projection graph of the steering gear stationary fixture that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 7 is the axonometric projection graph of the steering column stationary fixture assembly that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 8 is the breakdown axonometric projection graph of the steering column stationary fixture assembly that adopts in electric power-assisted steering system tester described in the utility model;
Fig. 9 is the axonometric projection graph of the steering column stationary fixture that adopts in electric power-assisted steering system tester described in the utility model;
Figure 10 is the breakdown axonometric projection graph of the steering column stationary fixture that adopts in electric power-assisted steering system tester described in the utility model;
Figure 11 is the axonometric projection graph that the steering column in the steering column stationary fixture adopting in electric power-assisted steering system tester described in the utility model is clamped;
Figure 12 is the axonometric projection graph of the bearing circle analog-driven mechanism that adopts in electric power-assisted steering system tester described in the utility model;
Figure 13 is the breakdown axonometric projection graph of the bearing circle analog-driven mechanism that adopts in electric power-assisted steering system tester described in the utility model;
Figure 14 is the axonometric projection graph of the T-shaped groove platform that adopts in electric power-assisted steering system tester described in the utility model;
Figure 15 is the axonometric projection graph of the vehicle driving simulator assembly that adopts in electric power-assisted steering system tester described in the utility model;
Figure 16 is the axonometric projection graph of the observing and controlling cabinet that adopts in electric power-assisted steering system tester described in the utility model;
Figure 17 is the circuit theory diagrams in the observing and controlling cabinet adopting in electric power-assisted steering system tester described in the utility model;
Figure 18 is the axonometric projection graph of the stabilized voltage supply that adopts in electric power-assisted steering system tester described in the utility model;
Figure 19 is the axonometric projection graph of the power cabinet that adopts in electric power-assisted steering system tester described in the utility model;
Figure 20 is the circuit theory diagrams in the power cabinet adopting in electric power-assisted steering system tester described in the utility model;
In figure: 1. observing and controlling cabinet, 2.T type groove platform, No. 3.1 linear electric motors assembly mechanisms, 4. stabilized voltage supply, 5. power cabinet, No. 6.1 steering gear stationary fixture assemblies, 7. steering gear, 8. steering column stationary fixture assembly, 9. bearing circle analog-driven mechanism, 10. vehicle driving simulator assembly, 11. firm bankings, 12. circular slide rails, 13. long swivel slides, 14. short swivel slides, 15. steering gear horizontal adjustment fixtures, 16. steering gear fixed supports, 17. fixed adjustment bolts, 18. tubing string fixture lifting sliding rails, 19. tubing string fixture turning axles, 20. rotation adjustment devices, 21. control hand wheels, 22. displays, 23. display brackets, 24. lifting fixed head assemblies, 25. steering column stationary fixtures, 26. bearing circle, 27. disc type electric machines, 28. shaft couplings, 29. moment of torsion angular transducers, 30. shaft couplings, 31.T type frid, 32. whirligig lower clamps, fixture on 33. whirligigs, 34. rolling clamp clamping screws, 35. set bolts, 36. steering column holders, 37. steering columns, 38. steering columns are clamped, 39. real vehicle seats, 40. seat plates, 41. gas pedals, 42. brake pedals, 43. linear electric motors frameworks, 44. linear electric motors, 45. displacement transducers, 46. power sensors, 47. jockeies, 48. displays, 49. guidance panels, 50. industrial computers, 51. servo drive systems, 52. power supply signal interfaces, 53. sensing systems, 54. troughs, 55. pedestals, 56. power supply input processing units, 57. power supply output processing units, 58. display panels, 59. guidance panels, 60. power-supply management systems, 61. DC power system, 62. interfaces, No. 63.2 linear electric motors assembly mechanisms, No. 64.2 steering gear stationary fixture assemblies, the 65. steering columns handle of clamping, the 66. steering columns connecting rod of clamping, the 67. steering columns head of clamping, the 68. steering columns pedestal of clamping, 69. electric assist motor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
Consult Fig. 1 Fig. 2, electric power-assisted steering system tester described in the utility model comprises observing and controlling cabinet 1,3, No. 2 linear electric motors assembly mechanisms 63 of 2, No. 1 linear electric motors assembly mechanism of T-shaped groove platform, stabilized voltage supply 4,6, No. 2 steering gear stationary fixture assemblies 64 of 5, No. 1 steering gear stationary fixture assembly of power cabinet, steering column stationary fixture assembly 8, bearing circle analog-driven mechanism 9 and vehicle driving simulator assembly 10.Wherein: No. 1 linear electric motors assembly mechanism 3 is identical with No. 2 linear electric motors assembly mechanism 63 structures, No. 1 steering gear stationary fixture assembly 6 is identical with No. 2 steering gear stationary fixture assembly 64 structures, No. 1 linear electric motors assembly mechanism 3, No. 2 linear electric motors assembly mechanisms 63, No. 1 steering gear stationary fixture assembly 6, No. 2 steering gear stationary fixture assemblies 64, the main part that steering column stationary fixture 8 and bearing circle analog-driven mechanism 9 are electric power-assisted steering system tester, observing and controlling cabinet 1, T-shaped groove platform 2, stabilized voltage supply 4, power cabinet 5 is slave part with vehicle driving simulator assembly 10, steering gear 7(comprises electric assist motor 69) be unit under test.This electric power-assisted steering system tester both can have been carried out automatic operation mode test, also can carry out manual operation mode test.
Consult Fig. 3 and Fig. 4, described No. 1 linear electric motors assembly mechanism 3 includes linear electric motors framework 43, linear electric motors 44, displacement transducer (NS-WY06) 45, power sensor (NS-WL1) 46 and jockey 47.
Linear electric motors 44 are arranged on linear electric motors framework 43 for being slidably connected, linear electric motors 44 are mainly simulated roadway frictions, along slideway, slide linear electric motors framework 43 is interior, and thrust is applied to unit under test is in steering gear 7, linear electric motors adopt Kollmorgen Corporations's customization motor, model is IC44200A2ACTRC1, for electric power-assisted steering system tester provides resistance, by displacement transducer 45 and 46 pairs of linear electric motors of power sensor 44, carries out accurately closed-loop control.The right-hand member of linear electric motors 44 is threaded with the left end of displacement transducer 45, and the right-hand member of displacement transducer 45 is threaded with the left end of power sensor 46, and the right-hand member of power sensor 46 is threaded with jockey 47.Jockey 47 is connected power sensor 46 by screw thread with steering gear 7, the model of power sensor 46 is interface1010-AJC-12.5KN, jockey 47 need to be considered the convenience of replacing according to different steering gears 7 otherwise designed during design, effectively improve test efficiency.
Consult Fig. 5 and Fig. 6, described No. 1 steering gear stationary fixture assembly 6 includes firm banking 11, circular slide rail 12, long swivel slide 13, short swivel slide 14, steering gear horizontal adjustment fixture 15, steering gear fixed support 16 and fixed adjustment bolt 17.
The bottom of circular slide rail 12 is welded on firm banking 11, the axis of rotation of circular slide rail 12 is parallel with the base plate in firm banking 11, circular slide rail 12 both sides are respectively provided with a gathering sill, short swivel slide 14 is fixedly mounted on the left and right sides of circular slide rail 12 and adopts adjustment bolt 17 that both are connected with long swivel slide 13, steering gear fixed support 16 is weldingly fixed on short swivel slide 14, upper supporting plate in steering gear fixed support 16 is vertical with the left side of short swivel slide 14, upper supporting plate in steering gear fixed support 16 is parallel with the axis of rotation of circular slide rail 12, the left end that steering gear dedicated leveling adjustment block 15 is bolted on upper supporting plate in steering gear fixed support 16 is arranged on the upper supporting plate in the steering gear fixed support 16 in short swivel slide 14 left sides.
Wherein base 11 is arranged and is fixed on T-shaped groove platform 2 according to the difference of steering gear, unit under test is that steering gear 7 is fixed on steering gear horizontal adjustment fixture 15, according to the installation requirement of steering angle, unclamp and adjust bolt 17, along circular slide rail 12, adjust the position of long swivel slide 13 and short swivel slide 14 simultaneously, angle can 360 the adjustment of degree circumference, after angle is determined, it is the fixing of steering gear 7 that locking adjustment bolt 17 completes unit under test.7 different of steering gears need to change steering gear horizontal adjustment fixture 15, effectively raise the efficiency that steering gear is changed.
Consult Fig. 7 to Fig. 9, described steering column stationary fixture assembly 8 includes tubing string fixture lifting sliding rail 18, rotation adjustment device 20, display 22, display bracket 23, the lifting fixed head assembly 24 and steering column stationary fixture 25 that 2 nested structures are identical.
The tubing string fixture lifting sliding rail 18 that 2 described nested structures are identical forms by lifting sliding rail and base, lifting sliding rail is that hollow iso-cross-section is rectangle or foursquare Shell-Class structural member, lifting sliding rail both can adopt Plate Welding to process, also can adopt casting technique to process, in the both sides of tubing string fixture lifting sliding rail 18, be from top to bottom provided with erection bolt for fixedly mounting the slide rail through hole of lifting fixed head.Base is rectangle or foursquare plate structure part, and the surrounding of base is evenly distributed with the through hole of erection bolt.Bottom and the base of lifting sliding rail are integrally welded.
Described rotation adjustment device 20 includes fixture 33 and 4 rolling clamp clamping screws 34 that structure is identical on 32,2 whirligigs that structure is identical of whirligig lower clamp that 2 structures are identical.The paired use of fixture 33 on 1 whirligig lower clamp 32 and 1 whirligig, on whirligig lower clamp 32 and whirligig, the semicircle opening of fixture 33 1 sides is staggered relatively, on whirligig lower clamp 32 and whirligig, the top of fixture 33 semicircle openings and below are provided with the clamping screw through hole that rolling clamp clamping screw 34 is installed, on every a pair of whirligig lower clamp 32 and whirligig, fixture 33 2 of employings are bolted on the left side of T-shaped frid 31, on the 2 pairs of whirligig lower clamps 32 and whirligig, fixture 33 is parallel to each other on the left side of T-shaped frid 31, front and back will be symmetrical arranged, it is the axis of rotation conllinear of the circular hole that on every a pair of whirligig lower clamp 32 and whirligig, fixture 33 forms.
Lifting fixed head assembly 24 comprises identical lifting fixed head, control hand wheel 21 and the screw pair of 19,2 structures of tubing string fixture turning axle.
The two ends of tubing string fixture turning axle 19 and 2 lifting fixed head employing welding manner connections that structure is identical, leading screw is arranged on the tubing string fixture lifting sliding rail 18 that is positioned at position, the place ahead (or rear) as being rotationally connected vertically by bearing, nut sleeve is contained on leading screw as being rotationally connected, the nut being sleeved on leading screw is fixedly connected with the lifting fixed head that is fixed on tubing string fixture turning axle 19 1 (front) end, control hand wheel 21 is arranged on the upper end of leading screw for being fixedly connected with, control hand wheel 21 rotates and drives nut to move up and down, thereby drive tubing string fixture turning axle 19 to move up and down.
Consult Fig. 8 to Figure 11, described steering column stationary fixture 25 comprises that T-shaped frid 31, set bolt 35, steering column holder 36, steering column 37 and steering column clamp 38.
Described steering column holder 36 comprises fixed base plate, upper support seat and lower support seat.Fixed base plate is rectangular slab class formation part, along it, is vertically arranged with the rectangular through hole of two installation set bolts 35 that are parallel to each other.Upper support seat one (left side) end adopts welding or bolt to be fixedly connected with the upper end of fixed base plate right side, the right-hand member of upper support seat is provided with the semicircle open slot that steering column 37 is installed, steering column is clamped and 38 is fixed on the right notch end face of semicircle open slot, on the right notch end face of semicircle open slot, is provided with clamp 38 the seat of clamping of steering column is installed.Lower support seat is C shape structural member, lower support seat one (left side) end adopts welding or bolt to be fixedly connected with the lower end of fixed base plate right side, the right-hand member of the lower support seat of C shape is provided with the tapped through hole perpendicular to fixed base plate, and tapped through hole is used for installing the thru-bolt steering column 37 that is installed.
What described steering column was clamped 38 employings is standard component, model is the No.6800 of AMF, and it comprises steering column handle 65, steering column connecting rod 66, steering column head 67 and the steering column pedestal 68 of clamping of clamping of clamping of clamping.Steering column the clamp lower end of pedestal 68 of the lower end of handle 65 and steering column of clamping is hinged, the clamp right-hand member of connecting rod 66 of steering column inserts steering column and clamps behind handle 65 middle parts hinged with the clamp upper end of pedestal 68 of steering column, the clamp left end of connecting rod 66 of steering column is fixed with the steering column head 67 of clamping vertically, by pulling the steering column handle 65 of clamping, drives steering columns connecting rod 66 rotations of clamping to make steering column the moved up and down locking and opening of portion 67 of clamping.
Unclamp rolling clamp clamping screw 34, even if make steering column stationary fixture 25, adjust steering column 37 around the axis rotation of tubing string fixture turning axle 19, thereby adjust steering column 37 with respect to the angle position of the tubing string fixture lifting sliding rail 18 in steering column stationary fixture assembly 8, then tighten rolling clamp clamping screw 34; Unclamp set bolt 35, position by mobile steering column holder 36 on T-shaped frid 31, realize the upper and lower linear position of adjusting steering column 37, meet after the requirement of steering column of various vehicles, tightening set bolt 35 is fixed on steering column holder 36 on T-shaped frid 31 right sides, making to be fixed on the position that the steering column 37 on steering column holder 36 adjusts is fixed, after steering column 37 location positionings, then test again with the steering column 38 locking steering columns 37 of clamping.
First unclamp after the bolt of the lifting fixed head that two structures in fixing lifting fixed head assembly 24 are identical, manual rotation control hand wheel 21, by screw pair, can adjust the height of steering column stationary fixture 25, by unclamping the set bolt of display bracket 23, can adjust the height of display bracket 23, the observation requirement of person to display 22 that meet different operating.
The tubing string fixture lifting sliding rail 18 that 2 nested structures are identical is arranged on T-shaped groove platform 2 vertically, the left end face of tubing string fixture lifting sliding rail 18 and the long limit of T-shaped groove platform 2 that 2 nested structures are identical are parallel, display bracket 23 two ends adopt and are bolted between the upper end of the tubing string fixture lifting sliding rail 18 that 2 nested structures are identical, display bracket 23 is parallel with T-shaped groove platform 2, the tubing string fixture turning axle 19 that two ends are welded with the lifting fixed head that structure is identical adopts and is bolted on the tubing string fixture lifting sliding rail 18 that 2 nested structures of display bracket 23 belows are identical, before the 1(of tubing string fixture turning axle 19) the lifting fixed head of end is fixedly connected with the nut in the bolt and nut pair of vertically installation, control hand wheel 21 is fixedly connected with the upper end of screw rod, tubing string fixture turning axle 19 is parallel with the upper surface of T-shaped groove platform 2, steering column stationary fixture 25 is sleeved on tubing string fixture turning axle 19 by rotation adjustment device 20 wherein, display 22 is arranged on the top end face of display bracket 23.
Consult Figure 12 and Figure 13, described bearing circle analog-driven mechanism 9 comprises that model is that the bearing circle 26 of PS2 is, moment of torsion angular transducer 29 and No. 2 shaft couplings 30 that the disc type electric machine of model 2,058 27, No. 1 shaft coupling 28, model are TQ-66; Wherein: it is the universal coupling with spider of SWC that No. 1 shaft coupling 28 and No. 2 shaft couplings 30 all adopt model.
The left end of bearing circle 26 is connected with the right-hand member of disc type electric machine 27 by bolt, the left end of disc type electric machine 27 is bolted the right-hand member of No. 1 shaft coupling 28, the left end of No. 1 shaft coupling 28 is connected with the right-hand member of moment of torsion angular transducer 29 by bolt, and the left end of moment of torsion angular transducer 29 is fixed and is connected with the right-hand member of No. 2 shaft couplings 30 by bolt.
In manual operation system, bearing circle analog-driven mechanism 9 is used as bearing circle, the parameters such as moment of torsion that direction of measurement dish applies are simultaneously carried out the measurement of assist characteristic etc., in automatic operation system, this device is as driver part, disc type electric machine 27 receives steering order, according to specific rotating speed or torque demand, drive bearing circle 26 rotations, the torque signal that moment of torsion angular transducer 29 records and tach signal, wherein a road is transferred to disc type electric machine 27 as closed-loop control, effectively improve control accuracy, another road is transferred to control end, making foundation as assist characteristic curve.
Consult Figure 14, described T-shaped groove platform 2 is comprised of pedestal 55 and trough 54.Pedestal 55 in T-shaped groove platform 2 is flat-type structural member, and the upper working face of pedestal 55 is processed with the T-shaped groove of orthogonal vertical horizontally set, and each parts are fixed on pedestal 55, the stability of each parts in warranty test process.Trough 54 is square-tube type structural member, is fixed on the side on a long limit of pedestal 55, and the wire harness between each parts is pressed signal type classification cabling in trough 54, guarantees that the outward appearance of experiment table is neat.
Consult Figure 15, described vehicle driving simulator assembly 10 comprises real vehicle seat 39, seat plate 40, gas pedal 41 and brake pedal 42.
Consult Figure 16 and Figure 17, described observing and controlling cabinet 1 comprises the circuit theory diagrams of display 48, guidance panel 49, industrial computer 50, servo drive system 51, power supply signal interface 52, sensing system 53 and observing and controlling cabinet 1.
Described power supply signal interface 52 comprises power input interface, direct supply input interface and the sensor signal input interface of each servo-driver power input interface, industrial computer 50, shields, to guarantee the undistorted transmission of signal between each interface.
Described servo drive system 51 comprises a plurality of servo-drivers, servo-driver front-end filtering, and beam shield reduces electromagnetic radiation.
Described sensing system 53 comprises signal condition unit, and signal transmssion line shielding, strengthens antijamming capability.
Described industrial computer 50 is used for acquisition and processing sensor signal.
The described quick display device running status of guidance panel 49 and handled easily are tested automatically and manually.
Consult Figure 18, described stabilized voltage supply 4 comprises power supply input processing unit 56 and power supply output processing unit 57.Be mainly power cabinet 5 stable power supply is provided, suppress the fluctuation that outside other consumer causes, guarantee the stability of electric power-assisted steering system tester electricity consumption.The power supply input processing unit 56 of stabilized voltage supply 4 adopts three-phase five-wire mode power interface, guarantees Electrical Safety.Power supply output processing unit 57 comprises single-phase 220V and three-phase 380V power interface, and stabilized voltage supply 4 has the single-phase function of three phase transformations.
Consult Figure 19 and Figure 20, described power cabinet 5 comprises display panel 58, guidance panel 59, power-supply management system 60, DC power system 61, interface 62 and circuit.Display panel 58 is arranged on the top of guidance panel 59, and for electric wire connects, power-supply management system 60 is arranged on the below of display panel 58 between the two, between the two for electric wire connects, and handled easily and maintenance like this.DC power system 61 provides 24V, 12V, 5V direct supply, by interface 62, is connected with external interface.On interface 62, have three-phase 380V and individual event 220V interface, interface shielding, strengthens antijamming capability.Power cabinet 5 has intelligent electric power management function, the stabilization time≤40ms that powers on, stable rear output voltage AC308V ± 2%.Insulation resistance >=5M Ω of power cabinet 5.Power cabinet 5 has filter function, the interference to frequency 0.1MHZ-10GHZ, common mode interference insertion loss 100db, differential mode interference insertion loss 70-100db.Power cabinet 5 has overvoltage, under-voltage protection, sends sound and light alarm and automatic cut-off power when output phase voltage exceeds 380v ± 10%.Power cabinet 5 has induction thunder safeguard function, requires lightning protection unit nominal discharge current 20KA, maximum electric discharge surge current 40KA, and the response time is less than 100ns.In power cabinet 5, more than contactor nominal insulation voltage 690v, limit electric operation frequency is more than 1200 times/hour.The electricity consumption of 3, No. 2 linear electric motors assembly mechanisms 63 of 5 pairs of No. 1 linear electric motors assembly mechanisms of power cabinet, steering column 37 positioning function of managing independently, monitor, report to the police, realizes by the interior power-supply management system of power cabinet 5.
Consult Fig. 1, stabilized voltage supply 4 is fixed on the ground in T-shaped groove platform 2 left sides, power cabinet 5 is fixed on the ground at stabilized voltage supply cabinet 4 rears, observing and controlling cabinet 1 can move around T-shaped groove platform 2 according to experimenter's requirement, in Fig. 1, observing and controlling cabinet 1 is fixed on the ground on T-shaped groove platform 2 front right sides, No. 1 steering gear stationary fixture assembly 6 that structure is identical and No. 2 steering gear stationary fixture assemblies 64 are fixed on the centre position in T-shaped groove platform 2 left sides, and the steering gear horizontal adjustment fixture 15 that No. 1 steering gear stationary fixture assembly 6 is identical with 2 structures in No. 2 steering gear stationary fixture assemblies 64 is placed relatively symmetrically for mirror, unit under test steering gear 7 is fixed on No. 1 steering gear stationary fixture assembly 6 and No. 2 steering gear stationary fixture assemblies 64.No. 1 linear electric motors assembly mechanism 3 that structure is identical, No. 2 linear electric motors assembly mechanisms 63 are arranged on the T-shaped groove platform 2 in outside (the place ahead and rear) of No. 1 steering gear stationary fixture assembly 6 and No. 2 steering gear stationary fixture assemblies 64, the output terminal of No. 1 linear electric motors assembly mechanism 3 and No. 2 linear electric motors assembly mechanisms 63 is bolted with the two ends that are fixed on the unit under test steering gear 7 on No. 1 steering gear stationary fixture assembly 6 and No. 2 steering gear stationary fixture assemblies 64, the output terminal axis of symmetry of No. 1 linear electric motors assembly mechanism 3 and No. 2 linear electric motors assembly mechanisms 63 and be fixed on unit under test steering gear 7 axis of symmetry conllinear on No. 1 steering gear stationary fixture assembly 6 and No. 2 steering gear stationary fixture assemblies 64, steering column 37 is fixed on steering column stationary fixture assembly 8 according to real vehicle position, steering column stationary fixture assembly 8 does not coexist on T-shaped groove platform 2 and moves according to the link position of steering gear 7, fixed position guarantees that steering column 37 is connected with steering gear 7, be fixed on the T-shaped groove platform 2 between steering gear 7 and vehicle driving simulator assembly 10, after steering column stationary fixture assembly 8 is fixing on T-shaped groove platform 2, bearing circle analog-driven mechanism 9 is directly plugged on steering column 37, vehicle driving simulator assembly 10 is fixed on the place, centre position on T-shaped groove platform 2 right sides, vehicle driving simulator assembly 10 is fixing adjust to correct position on T-shaped groove platform 2 after.
The principle of work of electric power-assisted steering system tester:
Consult Fig. 3, No. 1 linear electric motors assembly mechanism 3 that bearing circle analog-driven mechanism 9 is identical with structure and the steering order of No. 2 linear electric motors assembly mechanism 63 reception industrial computers 50,9 runnings of disc type electric machine 27 driving direction dish analog-driven mechanisms, moment of torsion angular transducer 29 records torque signal and tach signal; Linear electric motors 44 calculate simulated roadway friction force according to testing requirements, for steering gear 7 provides resistance, by displacement transducer 45 and power sensor 46, measure power and the moving displacement bearing in steering gear 7.Above signal enters the industrial computer 50 in observing and controlling cabinet 1, thereby makes the curves such as assist characteristic, simultaneously for control strategy exploitation provides strong foundation.
When electric power-assisted steering system tester execution automatic operation mode described in the utility model is tested, operator selects corresponding test routine, in observing and controlling cabinet 1, arrange, when test starts, observing and controlling cabinet 1 provides control command driving direction dish analog-driven mechanism 9 No. 1 linear electric motors assembly mechanism 3 and No. 2 linear electric motors assembly mechanisms 63 identical with structure.Wherein the disc type electric machine in bearing circle analog-driven mechanism 9 27 is simulated staff, according to the rotating speed of stipulating in test condition and moment of torsion rotation bearing circle 26, by being arranged on the middle moment of torsion angular transducer 29 of steering column 37 and disc type electric machine 27, measure disc type electric machine 27 output torques and angles, when moment of torsion and angle reach rated condition, electric boosting steering system electric assist motor 69 obtains trigger pip, this signal had both been done the trigger pip of electric boosting steering system, again as the closed-loop control signal of disc type electric machine 27, can carry out the control of moment of torsion angle modification to disc type electric machine 27, the electric boosted control module Gather and input of electric boosting steering system signal is also processed, and controls electric assist motor 69 output torques, by current sensor and voltage sensor, measures the power of electric assist motor 69 outputs, No. 1 linear electric motors assembly mechanism 3 that structure is identical and the linear electric motors 44 in No. 2 linear electric motors assembly mechanisms 63 calculate simulated roadway friction force according to testing requirements, for steering gear 7 provides resistance, the displacement transducer 45 being connected by linear electric motors 44 1 sides and power sensor 46 are measured power and the moving displacement bearing in steering gear 7.Above signal enters the industrial computer 50 in observing and controlling cabinet 1, and industrial computer 50 calculates and provide the data such as picture that various experiments need, form according to the control program of setting.Measurement data is the control result of display control program fully, for control strategy exploitation provides strong foundation.
When electric power-assisted steering system tester described in the utility model is carried out manual operation, operator is sitting on real vehicle seat 39, discharge disc type electric machine 27 in without restrained condition simultaneously, operating personnel's direct control bearing circle 26 turns round, the display 22 in operator the place ahead is according to operating result real time modelling road conditions, each sensor measurement correlation values is also transferred to industrial computer 50 and calculates, and industrial computer 50 programs provide the needed data of test and form.The advantage of this operation is that this testing table can be simulated road feel state, feels intuitively to operator, thereby steering is carried out to subjective performance evaluation.
The feature of electric power-assisted steering system tester described in the utility model is: by simulating the test of various constraint conditions, measure electric boosting steering system control characteristic, mechanical property and subjective sensation etc.Both can carry out under the specified conditions such as control characteristic, mechanical property from dynamic test, simultaneously also can carry out the manual operation of subjective sensation evaluation.In process of the test, display 22 display simulation road conditions in real time, can give the more real drive simulating environment of operator.The sensor being equipped with in electric power-assisted steering system tester is high precision apparatus, can guarantee measuring accuracy and the stability of electric power-assisted steering system tester.Electric power-assisted steering system tester configuration aspects has taken into full account the structure of current riding electric power steering systems for vehicles, design clamp structure simple, easy for installation simultaneously, under the prerequisite that guarantees whole electric power-assisted steering system tester rigidity, intensity, reduce costs to greatest extent, be convenient for changing, effectively improve test efficiency.
Claims (7)
1. an electric power-assisted steering system tester, comprise observing and controlling cabinet (1), T-shaped groove platform (2), No. 1 linear electric motors assembly mechanism (3), No. 2 linear electric motors assembly mechanisms (63), stabilized voltage supply (4), power cabinet (5), No. 1 steering gear stationary fixture assembly (6), No. 2 steering gear stationary fixture assemblies (64), steering column stationary fixture assembly (8), bearing circle analog-driven mechanism (9) and vehicle driving simulator assembly (10), it is characterized in that, described No. 1 steering gear stationary fixture assembly (6) is identical with No. 2 steering gear stationary fixture assemblies (64) structure, No. 1 steering gear stationary fixture assembly (6), No. 2 steering gear stationary fixture assemblies (64) all include firm banking (11), circular slide rail (12), long swivel slide (13), short swivel slide (14), steering gear horizontal adjustment fixture (15) and steering gear fixed support (16),
The bottom of circular slide rail (12) is weldingly fixed on firm banking (11), the axis of rotation of circular slide rail (12) is parallel with the base plate in firm banking (11), short swivel slide (14) is interior and with bolts with the gathering sill that long swivel slide (13) is arranged on circular slide rail (12) left and right sides successively, steering gear fixed support (16) is weldingly fixed on short swivel slide (14), upper supporting plate in steering gear fixed support (16) is vertical with the left side of short swivel slide (14), upper supporting plate in steering gear fixed support (16) is parallel with the axis of rotation of circular slide rail (12), steering gear horizontal adjustment fixture (15) is bolted to the left end of upper supporting plate in steering gear fixed support (16).
2. according to electric power-assisted steering system tester claimed in claim 1, it is characterized in that, described steering column stationary fixture assembly (8) includes tubing string fixture lifting sliding rail (18), rotation adjustment device (20), display (22), display bracket (23), the lifting fixed head assembly (24) and steering column stationary fixture (25) that 2 nested structures are identical;
The tubing string fixture lifting sliding rail (18) that 2 nested structures are identical is arranged on T-shaped groove platform (2) vertically, display bracket (23) two ends adopt the upper end that is bolted to the tubing string fixture lifting sliding rail (18) that 2 nested structures are identical, the two ends of the tubing string fixture turning axle (19) in lifting fixed head assembly (24) adopt and are bolted on the tubing string fixture lifting sliding rail (18) that 2 nested structures of display bracket (23) below are identical, 1 end of tubing string fixture turning axle (19) is fixedly connected with the nut in the bolt and nut pair of vertical installation in lifting fixed head assembly (24) simultaneously, control hand wheel (21) is fixedly connected with the upper end of screw rod, steering column stationary fixture (25) is arranged on tubing string fixture turning axle (19) by rotation adjustment device (20), display (22) is arranged on the top end face of display bracket (23).
3. according to electric power-assisted steering system tester claimed in claim 2, it is characterized in that, described lifting fixed head assembly (24) comprises tubing string fixture turning axle (19), 2 lifting fixed head, control hand wheel (21) and screw pairs that structure is identical;
The two ends of tubing string fixture turning axle (19) and 2 lifting fixed head employing welding manner connections that structure is identical, it is upper for being rotationally connected that leading screw is arranged on tubing string fixture lifting sliding rail (18) vertically by bearing, control hand wheel (21) is arranged on the upper end of leading screw for being fixedly connected with, and the nut being sleeved on leading screw is fixedly connected with the lifting fixed head that is fixed on tubing string fixture turning axle (19) one end.
4. according to electric power-assisted steering system tester claimed in claim 2, it is characterized in that, described steering column stationary fixture (25) includes T-shaped frid (31), steering column holder (36), steering column (37) and steering column clamp (38);
Steering column (37) is clamped by steering column, and (38) to be fixed on steering column holder (36) upper, and the steering column holder (36) that is fixed with steering column (37) adopts and is bolted on the right side of T-shaped frid (31);
Described steering column holder (36) comprises fixed base plate, upper support seat and lower support seat; Fixed base plate is rectangular slab class formation part, is vertically arranged with the rectangular through hole of two installation set bolts (35) that are parallel to each other; The left end of upper support seat adopts welding or bolt to be fixedly connected with the upper end of fixed base plate right side, the right-hand member of upper support seat is provided with the semicircle open slot that steering column (37) is installed, on the right notch end face of semicircle open slot, be provided with the clamp seat of clamping of (38) of steering column is installed, lower support seat is C shape structural member, the left end of lower support seat adopts welding or bolt to be fixedly connected with the lower end of fixed base plate right side, and the right-hand member of the lower support seat of C shape is provided with axis of rotation perpendicular to the tapped through hole of fixed base plate.
5. according to electric power-assisted steering system tester claimed in claim 2, it is characterized in that, described rotation adjustment device (20) includes fixture (33) and 4 rolling clamp clamping screws (34) that structure is identical on the whirligig that whirligig lower clamp (32) that 2 structures are identical, 2 structures are identical, on 1 whirligig lower clamp (32) and 1 whirligig, the semicircle opening of fixture (33) one sides is staggered relatively, on whirligig lower clamp (32) and whirligig, the top of the semicircle opening of fixture (33) and below are provided with the clamping screw through hole that rolling clamp clamping screw (34) is installed, on every a pair of whirligig lower clamp (32) and whirligig, fixture (33) adopts 2 rolling clamp clamping screws (34) to be fixed on the left side of T-shaped frid (31), the axis of rotation conllinear of the circular hole that on every a pair of whirligig lower clamp (32) and whirligig, fixture (33) forms.
6. according to electric power-assisted steering system tester claimed in claim 1, it is characterized in that, described No. 1 linear electric motors assembly mechanism (3) is identical with No. 2 linear electric motors assembly mechanisms (63) structure, and No. 1 linear electric motors assembly mechanism (3) all includes linear electric motors framework (43), linear electric motors (44), displacement transducer (45), power sensor (46) and jockey (47) with No. 2 linear electric motors assembly mechanisms (63);
Linear electric motors (44) are arranged in linear electric motors framework (43) as being slidably connected, the right-hand member of linear electric motors (44) is threaded with the left end of displacement transducer (45), the right-hand member of displacement transducer (45) is threaded with the left end of power sensor (46), and the right-hand member of power sensor (46) is threaded with jockey (47).
7. according to electric power-assisted steering system tester claimed in claim 1, it is characterized in that, described stabilized voltage supply (4) is fixed on the ground in T-shaped groove platform (2) left side, power cabinet (5) is fixed on the ground at stabilized voltage supply cabinet (4) rear, observing and controlling cabinet (1) is fixed on the front right side of T-shaped groove platform (2) or T-shaped groove platform (2) around on the ground of other position, No. 1 steering gear stationary fixture assembly (6) and No. 2 steering gear stationary fixture assemblies (64) are fixed on the centre position in T-shaped groove platform (2) left side, and the steering gear horizontal adjustment fixture (15) that No. 1 steering gear stationary fixture assembly (6) is identical with 2 structures in No. 2 steering gear stationary fixture assemblies (64) is placed relatively symmetrically for mirror, No. 1 linear electric motors assembly mechanism (3) and No. 2 linear electric motors assembly mechanisms (63) are arranged on the T-shaped groove platform (2) in No. 1 steering gear stationary fixture assembly (6) and the outside of No. 2 steering gear stationary fixture assemblies (64), the output terminal of No. 1 linear electric motors assembly mechanism (3) and No. 2 linear electric motors assembly mechanisms (63) be fixed on No. 1 steering gear stationary fixture assembly (6) and be connected with the two ends of unit under test steering gear (7) on No. 2 steering gear stationary fixture assemblies (64), the axis of symmetry of No. 1 linear electric motors assembly mechanism (3) and No. 2 linear electric motors assembly mechanisms (63) output terminal and the axis of symmetry conllinear that is fixed on the unit under test steering gear (7) on No. 1 steering gear stationary fixture assembly (6) and No. 2 steering gear stationary fixture assemblies (64), vehicle driving simulator assembly (10) is fixed on the place, centre position on T-shaped groove platform (2) right side, steering column stationary fixture assembly (8) is fixed on the T-shaped groove platform (2) between unit under test steering gear (7) and vehicle driving simulator assembly (10), bearing circle analog-driven mechanism (9) is directly plugged on the steering column (37) of steering column stationary fixture assembly (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470239.6U CN203502238U (en) | 2013-08-02 | 2013-08-02 | Apparatus for testing electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470239.6U CN203502238U (en) | 2013-08-02 | 2013-08-02 | Apparatus for testing electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502238U true CN203502238U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320470239.6U Withdrawn - After Issue CN203502238U (en) | 2013-08-02 | 2013-08-02 | Apparatus for testing electric power steering system |
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| CN (1) | CN203502238U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471863A (en) * | 2013-09-10 | 2013-12-25 | 重庆长安汽车股份有限公司 | Modal test stand of adjustable automobile steering system |
| CN104157179A (en) * | 2014-08-22 | 2014-11-19 | 吉林大学 | Force sensing analog system based on C-EPS structure |
| CN107246972A (en) * | 2017-06-22 | 2017-10-13 | 北京长城华冠汽车技术开发有限公司 | A kind of full-vehicle steering parameter test method and system |
| CN108318260A (en) * | 2017-01-17 | 2018-07-24 | 中国第汽车股份有限公司 | A kind of test equipment of electric boosting steering system |
| CN111661140A (en) * | 2020-01-09 | 2020-09-15 | 吉林大学 | Calculation method for power-assisted characteristic table of electric power-assisted steering system |
-
2013
- 2013-08-02 CN CN201320470239.6U patent/CN203502238U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471863A (en) * | 2013-09-10 | 2013-12-25 | 重庆长安汽车股份有限公司 | Modal test stand of adjustable automobile steering system |
| CN103471863B (en) * | 2013-09-10 | 2015-11-18 | 重庆长安汽车股份有限公司 | A kind of adjustable automobile steering is modal test bed |
| CN104157179A (en) * | 2014-08-22 | 2014-11-19 | 吉林大学 | Force sensing analog system based on C-EPS structure |
| CN108318260A (en) * | 2017-01-17 | 2018-07-24 | 中国第汽车股份有限公司 | A kind of test equipment of electric boosting steering system |
| CN107246972A (en) * | 2017-06-22 | 2017-10-13 | 北京长城华冠汽车技术开发有限公司 | A kind of full-vehicle steering parameter test method and system |
| CN111661140A (en) * | 2020-01-09 | 2020-09-15 | 吉林大学 | Calculation method for power-assisted characteristic table of electric power-assisted steering system |
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