New energy automobile electronic steering test bench

Abstract

The application discloses a new energy automobile electronic steering test bench, which comprises a supporting mechanism for supporting an automobile steering system, wherein a connecting mechanism, a distance adjusting mechanism, a controller and a display are arranged on the supporting mechanism, and the display and the automobile steering system are electrically connected with the controller; the supporting mechanism is formed by a supporting assembly and an opening and closing assembly; the opening and closing assembly can be turned and opened when the automobile steering system is assembled with the supporting mechanism, which is convenient for placing the automobile steering system and can expand the operable space, and is helpful to improving the assembling efficiency of the staff; the distance adjusting mechanism can adjust the distance between the two supporting plates and the mounting seat according to the distance between the two front wheels; the air cylinder can adjust the height of the M-shaped plate according to the diameter of the front wheel, so that the supporting mechanism, the supporting wheel mechanism and the connecting mechanism can support the automobile steering systems of different models, and the application range of the new energy automobile electronic steering test bench is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile steering test, in particular to a new energy automobile electronic steering test bench. BACKGROUND

[0002] New energy automobile refers to the use of unconventional vehicle fuel as power source (or using conventional vehicle fuel, using new vehicle power device), the combination of vehicle power control and driving advanced technology, the formation of advanced technology principle, with new technology, new structure of automobile. New energy automobile includes pure electric vehicle, range extender electric vehicle, hybrid electric vehicle, fuel cell electric vehicle, hydrogen engine vehicle, etc.

[0003] With the rapid development of automobile technology, the automobile steering system also has more significant development from the traditional mechanical steering system, hydraulic power steering system to electronic control steering system to steer-by-wire system. Because people's safety performance requirements for automobiles are getting higher and higher, and the steer-by-wire system can improve the safety performance of automobile steering, improve the driving characteristics and improve the driver's road feeling, so the application of steer-by-wire system is more and more common.

[0004] The patent document with the publication number CN108375480B discloses an automobile steering system test bench, which comprises a steering torque, a steering wheel, an electronic control unit one, a driving motor, an electromagnetic clutch one, a gear rack, a tire assembly, an electronic control unit two, a feedback motor, an electromagnetic clutch two, a controller, a reducer, a sensor group, a steering shaft and a connecting shaft. The steering torque acts on the steering wheel, the lower end of the steering wheel is connected with the upper end of the steering shaft, the lower end of the steering shaft is connected with the upper side of the electromagnetic clutch one, the upper end of the connecting shaft is connected with the lower side of the electromagnetic clutch two, the lower end of the connecting shaft is connected with the reducer, the reducer is connected with the gear rack, and the gear rack is connected with the tire assembly on both sides. Combined with the working principle knowledge of steer-by-wire system (SBW), electronic control steering system (EPS) and traditional mechanical steering system, the three are integrated in one steering system. At the same time, the conversion between the three steering systems can be realized according to different working conditions, solving the problem of repeated purchase of steering system test bench and solving the fault prone to occur in the actual work of steer-by-wire system.

[0005] Although the above automobile steering system test bench can solve the corresponding technical problems, it needs to use a rack for support during the test in order to simulate the steering operation under real driving conditions and test the steering performance. However, the existing rack is of integral structure, which causes difficulty in assembly when the automobile steering system test bench is assembled with the rack due to limited space. At the same time, the front track and wheel diameter of different vehicle models are not the same, and the existing rack is difficult to adjust according to different vehicle models, so the applicability is low.

[0006] To this end, a new energy vehicle electronic steering test bench is provided. SUMMARY

[0007] The technical task of the present application is to solve the above problems by providing a new energy vehicle electronic steering test bench.

[0008] To achieve the above object, the present application provides the following technical scheme:

[0009] A new energy vehicle electronic steering test bench, comprising a support mechanism for supporting the vehicle steering system, which is provided with a connecting mechanism, a distance adjusting mechanism, a controller and a display, the display and the vehicle steering system are respectively electrically connected with the controller;

[0010] The vehicle steering system comprises a steering wheel, a steering column assembly, a steering gear assembly, a steering support, a suspension, a front wheel and a shock absorber, one end of the steering column assembly is connected with the steering wheel, the other end of the steering column assembly is connected with the steering gear assembly, the steering support is installed on the steering gear assembly, one suspension is fixedly connected on each side of the steering support, one front wheel is connected on each end of the steering gear assembly, the suspensions and the front wheels are arranged in one-to-one correspondence, the suspensions are connected with the corresponding front wheels, and one shock absorber is connected on each side of the two front wheels.

[0011] The support mechanism is used for providing an installation basis for the steering support, the suspension, the supporting wheel mechanism, the connecting mechanism, the distance adjusting mechanism, the controller and the display, the supporting wheel mechanism is arranged at the bottom of the inner cavity of the support mechanism and is used for supporting the front wheel, the connecting mechanism is arranged at the top of the support mechanism and is used for supporting the shock absorber, the distance adjusting mechanism is used for adjusting the local component distance between the supporting wheel mechanism and the connecting mechanism to adapt to the vehicle steering system with different front wheel tracks, the controller is arranged on the front side of the top of the support mechanism and can realize the test simulation of three kinds of steering systems in cooperation with the vehicle steering system, and the display is arranged on the rear side of the top of the support mechanism and can intuitively monitor and display real-time data, indexes and trends.

[0012] Preferably, the support mechanism comprises a supporting assembly, an opening and closing assembly is arranged on the side of the top of the supporting assembly away from the display, and the controller is arranged on the opening and closing assembly.

[0013] The supporting assembly comprises a rectangular frame, two vertical rods A are fixedly connected to the front side of the top of the rectangular frame, vertical rods B which are parallel to the vertical rods A are fixedly connected to the rear side of the top of the rectangular frame, four vertical rods B are arranged in a rectangular array, an installation plate is fixedly connected to the top of the four vertical rods B, a display is installed on the top of the installation plate, a horizontal rod A is fixedly connected to the front side of the inner cavity of the rectangular frame, vertical rods C which are parallel to the vertical rods A are fixedly connected to the two sides of the top of the horizontal rod A, the top of the vertical rods C is capable of being fixedly connected with a steering support, vertical rods are fixedly connected to the two sides of the top of the rectangular frame, and the top of the vertical rods is capable of being fixedly connected with a suspension;

[0014] The bottom of the rectangular frame is vertically fixedly connected with a supporting leg at each corner, and a movable wheel with a brake pad is installed at the bottom of the supporting leg.

[0015] The opening and closing assembly and the connecting mechanism are arranged in front of and behind the vertical rods A and the vertical rods B on the front side respectively, the supporting wheel mechanism is arranged on the top of the rectangular frame, the supporting wheel mechanism is arranged between the vertical rods C and the vertical rods B on the front side, and the distance adjusting mechanism is arranged between the rectangular frame and the connecting mechanism.

[0016] As preferred, the opening and closing assembly comprises a U-shaped frame which is rotatably connected between the two vertical rods A, the end of the U-shaped frame is detachably connected with the connecting mechanism, two V-shaped plates are fixedly connected to the inner wall of the U-shaped frame, an accommodation space for the upper end of the steering column assembly is formed between the two V-shaped plates, the V-shaped plates are fixedly connected with the upper end of the steering column assembly, and the controller is installed on the side of the inner cavity of the U-shaped frame which is away from the V-shaped plates.

[0017] As preferred, the supporting wheel mechanism comprises two horizontal rods B which are fixedly connected to the top of the rectangular frame, the vertical rods are located between the two horizontal rods B, one of the horizontal rods B is located below the U-shaped frame, and the other horizontal rod B is located below the connecting mechanism, a supporting plate is arranged on each side of the surface of the rectangular frame, the horizontal rods B are arranged between the two supporting plates, the surface of the supporting plate is movably provided with an M-shaped plate, and the top of the M-shaped plate is capable of being in contact with the bottom of the front wheel.

[0018] As preferred, a gas cylinder is installed on the top of the supporting plate, the output end of the gas cylinder is fixedly connected with the top of the inner cavity of the M-shaped plate, and the inner wall of the M-shaped plate is slidably connected with the surface of the supporting plate.

[0019] As preferred, the connecting mechanism comprises two horizontal rods C, one end of the horizontal rod C is fixedly connected with the adjacent vertical rod B, a vertical rod D is fixedly connected with one end of the top of the horizontal rod C which is close to the U-shaped frame, the top of the vertical rod D is provided with a horizontal rod D which is parallel to the horizontal rod B, the bottom of the horizontal rod D is fixedly connected with a mounting seat, and the mounting seat is fixedly connected with the top of the shock absorber.

[0020] As preferred, the bottom of the cross bar C is fixedly connected with a limiting rod, the limiting rod extends to the front side of the cross bar C near one end of the U-shaped frame, and the front end of the limiting rod is detachably connected with the end of the U-shaped frame through bolts.

[0021] As preferred, the two ends of the cross bar B are slidably penetrated with slide rods, one end of the slide rod is fixedly connected with the adjacent support plate, the surface of the vertical rod D is slidably sleeved with a slide sleeve, and the slide sleeve is fixedly connected with the top end of the vertical rod D.

[0022] As preferred, the distance adjusting mechanism comprises a double-shaft motor located below the rectangular frame, both output shafts of the double-shaft motor are fixedly connected with rotating rods which are arranged in parallel with the cross bar D, one end of the rotating rod away from the double-shaft motor is rotatably connected with a support block A, the top of the support block A is fixedly connected with the bottom of the rectangular frame, the bottom of the rectangular frame is fixedly connected with two symmetrical support blocks B, a bidirectional screw rod A is rotatably connected between the two support blocks B, both sides of the surface of the bidirectional screw rod A are threadedly sleeved with movable plates, the movable plates are arranged in one-to-one correspondence with the support plates, the top of the movable plate is fixedly connected with the bottom of the corresponding support plate, a bidirectional screw rod B is rotatably connected between the two vertical rods D through a bearing, both sides of the surface of the bidirectional screw rod B are threadedly sleeved with movable blocks, the movable blocks are arranged in one-to-one correspondence with the cross bars D, the top of the movable block is fixedly connected with the bottom of the corresponding cross bar D, the rotating rod, the bidirectional screw rod A and the bidirectional screw rod B are respectively drivingly connected through belt pulleys and belts.

[0023] As preferred, the double-shaft motor is electrically connected with a controller, a reinforcing plate is fixedly connected between the two support blocks A, and the double-shaft motor is installed on the top of the reinforcing plate.

[0024] Compared with the prior art, the application has the following advantages and positive effects:

[0025] 1、The supporting mechanism is formed by the supporting assembly and the opening and closing assembly, the opening and closing assembly can be turned and opened when the automobile steering system is assembled with the supporting mechanism, which is convenient for placing the automobile steering system and can expand the operable space, thereby helping to improve the assembly efficiency of the workers.

[0026] 2、The present application, by adjusting the distance between the two front wheels, the distance between the two support plates and the mounting seat can be adjusted by the distance adjusting mechanism, and the height of the M-shaped plate can be adjusted by the cylinder according to the diameter of the front wheel, so that the support mechanism, the supporting wheel mechanism and the connecting mechanism can support different models of automobile steering systems, thereby expanding the application range of the new energy automobile electronic steering test bench; meanwhile, the two support plates and the mounting seat are driven by a double-shaft motor, which can save energy and prolong the use time under the condition of battery power supply, and has the value of popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The structure diagram of the embodiment of the present application and the automobile steering system in the assembled state Figure One ;

[0029] Figure 2 The structure diagram of the embodiment of the present application and the automobile steering system in the assembled state Figure Two ;

[0030] Figure 3 The structure diagram of the automobile steering system of the embodiment of the present application;

[0031] Figure 4 The structure diagram of the embodiment of the present application;

[0032] Figure 5 The structure diagram of the opening and closing assembly of the embodiment of the present application in the open state;

[0033] Figure 6 The structure diagram of the supporting wheel mechanism and the connecting mechanism of the embodiment of the present application after adjustment Figure One ;

[0034] Figure 7 The structure diagram of the supporting wheel mechanism and the connecting mechanism of the embodiment of the present application after adjustment Figure Two ;

[0035] Figure 8 The structure diagram of the supporting wheel mechanism and the distance adjusting mechanism of the embodiment of the present application.

[0036] In the figure: 1, automobile steering system; 11, steering wheel; 12, steering column assembly; 13, steering gear assembly; 14, steering support; 15, suspension; 16, front wheel; 17, shock absorber;

[0037] 100, support mechanism; 110, supporting assembly; 111, rectangular frame; 112, vertical rod A; 113, vertical rod B; 114, mounting plate; 115, horizontal rod A; 116, vertical rod C; 117, vertical column; 118, supporting leg; 119, moving wheel; 120, opening and closing assembly; 121, V-shaped frame; 122, V-shaped plate;

[0038] 200, supporting wheel mechanism; 210, horizontal rod B; 211, sliding rod; 220, supporting plate; 230, M-shaped plate; 240, air cylinder;

[0039] 300, connecting mechanism; 310, horizontal rod C; 320, vertical rod D; 321, sliding sleeve; 330, horizontal rod D; 340, mounting seat; 350, limiting rod;

[0040] 400, distance adjusting mechanism; 410, double-shaft motor; 420, rotating rod; 430, supporting block A; 440, supporting block B; 450, bidirectional screw rod A; 460, movable plate; 470, bidirectional screw rod B; 480, movable block;

[0041] 500, controller;

[0042] 600, display;

[0043] 700, reinforcing plate. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0045] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments. EMBODIMENT

[0046] As Figures 1-8As shown, a new energy vehicle electronic steering test bench according to an embodiment of the present invention includes a support mechanism 100 for supporting a vehicle steering system 1, on which a connecting mechanism 300, an adjusting mechanism 400, a controller 500, and a display 600 are provided. The display 600 and the vehicle steering system 1 are electrically connected to the controller 500. The vehicle steering system 1 includes a steering wheel 11, a steering column assembly 12, a steering gear assembly 13, a steering support 14, a suspension 15, front wheels 16, and a shock absorber 17. One end of the steering column assembly 12 is connected to the steering wheel 11, and the other end of the steering column assembly 12 is connected to the steering gear assembly 13. The steering support 14 is horizontally mounted on the steering gear assembly 13. One suspension 15 is fixedly connected to each side of the steering support 14. One front wheel 16 is fixedly connected to each end of the steering gear assembly 13. The suspension 15 and the front wheel 16 are arranged in a one-to-one correspondence and are connected to the corresponding front wheel 16. Shock absorbers 17 are connected to one on each side of the two front wheels 16. The support mechanism 100 provides a mounting base for the steering bracket 14, suspension 15, roller support mechanism 200, connecting mechanism 300, adjusting mechanism 400, controller 500, and display 600. The roller support mechanism 200 is located at the bottom of the inner cavity of the support mechanism 100 and is used to support the front wheels 16. The connecting mechanism 300 is located at the top of the support mechanism 100 and is used to support the shock absorbers 17. The adjusting mechanism 400 is used to adjust the distance between the roller support mechanism 200 and the connecting mechanism 300 to suit different front wheel track automotive steering systems 1. The controller 500 is located at the front of the top of the support mechanism 100 and can cooperate with the automotive steering system 1 to realize test simulation of three steering systems. The display 600 is located at the rear of the top of the support mechanism 100 and can intuitively monitor and display real-time data, indicators, and trends to help quickly understand the overall situation of the data.

[0047] It should be noted that the specific working principle between the above-mentioned automotive steering system 1 and controller 500 is consistent with that of an automotive steering system test bench disclosed in the existing announcement number CN108375480B. Combining the working principles of steer-by-wire (SBW), electronic steering (EPS), and traditional mechanical steering systems, the three are integrated into one steering system. At the same time, the conversion between the three steering systems can be realized according to different working conditions, which solves the problem of repeated purchase of steering system test benches and solves the faults that are prone to occur in the actual operation of steer-by-wire systems. This is existing technology, so it will not be described in detail in this technical solution. Example

[0048] like Figures 1-8 As shown, the electronic steering test bench for new energy vehicles provided in this embodiment differs from that in Embodiment 1 in that:

[0049] The supporting mechanism 100 comprises a supporting assembly 110, an opening and closing assembly 120 is arranged on the top of the supporting assembly 110 and away from one side of the display 600, and the controller 500 is arranged on the opening and closing assembly 120; the supporting assembly 110 comprises a rectangular frame 111, two vertical rods A 112 are fixedly connected to the front side of the top of the rectangular frame 111 in the vertical direction, vertical rods B 113 which are parallel to the vertical rods A 112 are fixedly connected to the rear side of the top of the rectangular frame 111, the vertical rods B 113 are arranged in a rectangular array and there are four vertical rods B 113, the top of the four vertical rods B 113 is fixedly connected to a mounting plate 114 which is arranged in the horizontal direction, the display 600 is mounted on the top of the mounting plate 114, a horizontal rod A 115 is fixedly connected to the front side of the inner cavity of the rectangular frame 111 in the horizontal direction, vertical rods C 116 which are parallel to the vertical rods A 112 are fixedly connected to the two sides of the top of the horizontal rod A 115, the top end of the vertical rods C 116 can be fixedly connected with the steering support platform 14, vertical columns 117 are fixedly connected to the two sides of the top of the rectangular frame 111, and the top end of the vertical columns 117 can be fixedly connected with the suspension 15; the supporting assembly 110 can support the steering support platform 14 and the suspension 15, so that the automobile steering system 1 can be stably placed in the supporting mechanism 100, to facilitate subsequent steering test operation; vertical legs 118 are fixedly connected to the four corners of the bottom of the rectangular frame 111 in the vertical direction, and movable wheels 119 provided with brake pads are mounted at the bottom end of the vertical legs 118; the vertical legs 118 can support and lift the supporting assembly 110, provide installation space for part of the structure on the supporting assembly 110, avoid part of the structure on the supporting assembly 110 from contacting the ground and affecting use, improve the flexibility of the supporting mechanism 100, facilitate moving the supporting mechanism 100 to the required position, and improve use convenience; the opening and closing assembly 120 and the connecting mechanism 300 are arranged in front of and behind each other between the vertical rods A 112 and the vertical rods B 113 on the front side, the supporting wheel mechanism 200 is arranged on the top of the rectangular frame 111 and between the vertical rods C 116 and the vertical rods B 113 on the front side, and the distance adjusting mechanism 400 is arranged between the rectangular frame 111 and the connecting mechanism 300.

[0050] The opening and closing assembly 120 comprises a U-shaped frame 121 rotatably connected between the two vertical rods A112 through a rotating shaft, the end of the U-shaped frame 121 is detachably connected with the connecting mechanism 300, the inner wall surface of the U-shaped frame 121 is fixedly connected with two V-shaped plates 122, the accommodating space of the upper end of the steering column assembly 12 is formed between the two V-shaped plates 122, the V-shaped plate 122 is fixedly connected with the upper end of the steering column assembly 12, and the controller 500 is installed on the side of the inner cavity of the U-shaped frame 121 away from the V-shaped plate 122. When it is necessary to install the automobile steering system 1 in the supporting mechanism 100, the U-shaped frame 121 can be unlocked and turned open, so as to increase the operation space of the worker, and avoid the phenomenon that the automobile steering system 1 is difficult to assemble with the supporting mechanism 100 due to space limitation.

[0051] The roller mechanism 200 comprises two horizontal rods B210 fixedly connected to the top of the rectangular frame 111 and arranged in front and back, the vertical column 117 is located between the two horizontal rods B210, and one of the horizontal rods B210 is located below the U-shaped frame 121, and the other horizontal rod B210 is located below the connecting mechanism 300, the surface of the rectangular frame 111 is provided with a support plate 220 on each side, the horizontal rod B210 is arranged between the two support plates 220, the surface of the support plate 220 is movably provided with an M-shaped plate 230, the top of the M-shaped plate 230 can contact the bottom of the front wheel 16, the roller mechanism 200 can provide a support base for the front wheel 16, and can bear part of the weight of the automobile steering system 1, so as to avoid that all the weight is accumulated on the vertical rod C116 and the vertical column 117, which helps to improve the support firmness of the supporting assembly 110; the top of the support plate 220 is provided with a gas cylinder 240, the output end of the gas cylinder 240 is fixedly connected with the top of the inner cavity of the M-shaped plate 230, by starting the gas cylinder 240, the output end of the gas cylinder 240 can drive the M-shaped plate 230 to move up and down, so as to support the front wheel 16 with different diameters, the inner wall surface of the M-shaped plate 230 is slidably connected with the surface of the support plate 220, which can limit the M-shaped plate 230, so that the M-shaped plate 230 can stably move up and down, and avoid the phenomenon of shaking or even deviation.

[0052] The connecting mechanism 300 comprises two horizontal rods C310 arranged in a horizontal manner, one end of the horizontal rod C310 is fixedly connected with the adjacent vertical rod B113, and the top of the horizontal rod C310 is fixedly connected with a vertical rod D320 in a vertical direction near one end of the U-shaped frame 121, the top end of the vertical rod D320 is provided with a horizontal rod D330 arranged in parallel with the horizontal rod B210, the bottom end of the horizontal rod D330 is fixedly connected with a mounting seat 340, the mounting seat 340 is fixedly connected with the top of the shock absorber 17, the connecting mechanism 300 can provide a mounting base for the shock absorber 17, so that the shock absorber 17 and the connecting mechanism 300 can form a shock absorption system; the bottom of the horizontal rod C310 is fixedly connected with a limiting rod 350, one end of the limiting rod 350 near the U-shaped frame 121 extends to the front side of the horizontal rod C310, the front end of the limiting rod 350 is detachably connected with the end of the U-shaped frame 121 through a bolt, the limiting rod 350 can limit the end of the U-shaped frame 121, so as to avoid that the U-shaped frame 121 is directly rotated to the inner cavity of the supporting assembly 110 by excessive rotation; the two ends of the horizontal rod B210 are slidably penetrated by a sliding rod 211, one end of the sliding rod 211 is fixedly connected with the adjacent supporting plate 220, so as to realize the movable connection between the supporting plate 220 and the horizontal rod B210, and the horizontal position of the supporting plate 220 can be adjusted along the length direction of the horizontal rod B210, the surface of the horizontal rod D330 is slidably sleeved with a sliding sleeve 321, the sliding sleeve 321 is fixedly connected with the top end of the vertical rod D320, so as to realize the movable connection between the horizontal rod D330 and the vertical rod D320, and the horizontal position of the mounting seat 340 can be adjusted along the length direction of the horizontal rod D330, and the horizontal rod D330 is arranged in parallel with the horizontal rod B210, so that the horizontal position of the supporting plate 220 and the mounting seat 340 is consistent in the movable direction.

[0053] The distance adjusting mechanism 400 comprises a double-shaft motor 410 located below the rectangular frame 111, both output shafts of the double-shaft motor 410 are fixedly connected with a rotating rod 420 arranged in parallel with the cross rod D330, one end of the rotating rod 420 away from the double-shaft motor 410 is rotatably connected with a supporting block A 430 through a bearing, the top of the supporting block A 430 is fixedly connected with the bottom of the rectangular frame 111, the bottom of the rectangular frame 111 is fixedly connected with two symmetrical supporting blocks B 440, the two supporting blocks B 440 are rotatably connected with a bidirectional screw A 450 arranged in parallel with the rotating rod 420 through a bearing, both sides of the surface of the bidirectional screw A 450 are threadedly sleeved with a movable plate 460, the movable plate 460 is arranged in one-to-one correspondence with the supporting plate 220, the top of the movable plate 460 is fixedly connected with the bottom of the corresponding supporting plate 220, the two vertical rods D320 are rotatably connected with a bidirectional screw B 470 arranged in parallel with the bidirectional screw A 450 through a bearing, both sides of the surface of the bidirectional screw B 470 are threadedly sleeved with a movable block 480, the movable block 480 is arranged in one-to-one correspondence with the cross rod D330, the top of the movable block 480 is fixedly connected with the bottom of the corresponding cross rod D330, the rotating rod 420, the bidirectional screw A 450 and the bidirectional screw B 470 are drivingly connected through a belt and a pulley, by starting the double-shaft motor 410, the output shaft of the double-shaft motor 410 can finally drive the two supporting plates 220 and the two mounting seats 340 to move towards or away from each other, thereby the distance between the two supporting plates 220 and the two mounting seats 340 can be adjusted according to the distance between the two front wheels 16, so as to improve the application range of the supporting roller mechanism 200 and the connecting mechanism 300; the double-shaft motor 410 is electrically connected with the controller 500, and the two supporting blocks A 430 are fixedly connected with a reinforcing plate 700, the double-shaft motor 410 is mounted on the top of the reinforcing plate 700, the working state or parameters of the double-shaft motor 410 can be adjusted through the controller 500, and the reinforcing plate 700 can provide a supporting basis for the double-shaft motor 410, so as to improve the stability of the double-shaft motor 410 during operation.

[0054] The controller 500 is configured with a synchronous compensation control module, which is used for dynamically controlling the operation of the distance adjusting mechanism, and simultaneously executing the following control equation:

[0055]

[0056] Wherein:

[0057] : motor torque compensation (N·m);

[0058] : displacement deviation (mm);

[0059] : left and right side load torque difference (N·m);

[0060] System time constant (s);

[0061] Nonlinear correction index (0.8-1.2);

[0062] , , Dynamic adjustment coefficient;

[0063] Displacement deviation weight (0.3-0.5);

[0064] Torque-displacement coupling integral (0.1-0.2);

[0065] Nonlinear differential compensation (0.05-0.1).

[0066] For example, when adjusting the wheelbase:

[0067] 1. The controller 500 collects the displacement sensor data of the left and right support plates 220 in real time (Tl, T2) ) and motor torque data (Tl, T2) , );

[0068] 2. Calculate the current displacement deviation ;

[0069] 3. Measure the torque difference ;

[0070] 4. Substitute parameters: , , , , ;

[0071] 5. Calculate ;

[0072] 6. Output the compensation torque to the dual-shaft motor 410 to achieve dynamic balance.

[0073] Technical effects:

[0074] Compared with traditional PID control, the wheelbase adjustment synchronization error is greatly reduced; it can automatically compensate for the influence of mechanical wear and load mutation; through torque difference feedback, invalid power consumption is reduced, energy consumption is significantly reduced; safety protection: when exceeds the threshold value, emergency braking is triggered.

[0075] The equation has been verified by MATLAB / Simulink simulation, and in the step response test, it shows excellent performance with an overshoot of <3% and a regulation time of <1.2s, and is particularly suitable for new energy vehicle steering system test benches and other electromechanical coupling systems that require high-precision synchronous regulation.

[0076] Working principle:

[0077] First, start the double-shaft motor 410, the output shaft of the double-shaft motor 410 drives the rotating rod 420 to rotate, the rotating rod 420 drives the bidirectional screw rod A 450 and the bidirectional screw rod B 470 to rotate synchronously through the belt pulley and the belt, the bidirectional screw rod A 450 drives the two movable plates 460 on its surface to move towards or away from each other, the bidirectional screw rod B 470 drives the two movable blocks 480 on its surface to move towards or away from each other, the movable plate 460 drives the support plate 220, the M-shaped plate 230 and the air cylinder 240 to move synchronously, the support plate 220 drives the sliding rod 211 to slide in the inner cavity of the horizontal rod B 210, the movable block 480 drives the horizontal rod D 330 and the mounting seat 340 to move synchronously, the horizontal rod D 330 slides in the inner cavity of the sliding sleeve 321, so as to adjust the distance between the two M-shaped plates 230 and the two mounting seats 340 according to the distance between the two front wheels 16; start the air cylinder 240, the output end of the air cylinder 240 drives the M-shaped plate 230 to slide on the surface of the support plate 220, so as to adjust the distance between the M-shaped plate 230 and the support plate 220 according to the diameter of the front wheel 16;

[0078] Then, unscrew the bolts between the amphi-shaped frame 121 and the limiting rod 350 to unlock the amphi-shaped frame 121, turn the unlocked amphi-shaped frame 121 open, so that the amphi-shaped frame 121 drives the V-shaped plate 122 and the controller 500 to rotate synchronously until the amphi-shaped frame 121 rotates to the front side of the vertical rod A 112, at this time, the connecting mechanism 300 and the vertical rod A 112 are in an open state, without structural obstruction, thereby facilitating the placement and assembly of the steering support platform 14 and the suspension 15, after the connection and fixation between the steering support platform 14 and the vertical rod C 116, the suspension 15 and the vertical column 117 are completed, the steering column assembly 12 and the steering gear assembly 13 are connected, the front wheel 16 is placed on the M-shaped plate 230 and connected with the suspension 15, the shock absorber 17 is connected between the front wheel 16 and the mounting seat 340, or the automobile steering system 1 assembled except the steering wheel 11 is directly placed in the inside of the supporting assembly 110 through the gap between the connecting mechanism 300 and the vertical rod A 112, and then the steering support platform 14 and the vertical rod C 116 are connected, the suspension 15 and the vertical column 117 are connected, and the shock absorber 17 and the mounting seat 340 are connected.

[0079] Finally, the inverted U-shaped frame 121 is closed, so that the end of the inverted U-shaped frame 121 is in contact with the limiting rod 350, the inverted U-shaped frame 121 is connected with the limiting rod 350 through bolts to realize the locking operation of the inverted U-shaped frame 121, at this time, the V-shaped plate 122 can be connected with the steering column assembly 12, the steering wheel 11 is installed on the steering column assembly 12, the assembly operation of the automobile steering system 1 and the supporting mechanism 100 is completed, and then the electronic steering test operation of the automobile steering system 1 can be performed.

[0080] The person skilled in the art can easily implement the present application through the above specific embodiments. However, it should be understood that the present application is not limited to the above specific embodiments. On the basis of the disclosed embodiments, the person skilled in the art can arbitrarily combine different technical features to realize different technical solutions.

Claims

1. A test bench for electronic steering in new energy vehicles, characterized in that, include: A support mechanism (100) for supporting the vehicle steering system (1) is provided with a connecting mechanism (300), an adjusting mechanism (400), a controller (500), and a display (600). The display (600) and the vehicle steering system (1) are electrically connected to the controller (500). The vehicle steering system (1) includes a steering wheel (11), a steering column assembly (12), a steering gear assembly (13), a steering support (14), a suspension (15), a front wheel (16), and a shock absorber (17). One end of the steering column assembly (12) is connected to... The steering wheel (11) is connected to the steering column assembly (12), the other end of which is connected to the steering gear assembly (13). The steering bracket (14) is installed on the steering gear assembly (13). The suspension (15) is fixedly connected to one on each side of the steering bracket (14). The front wheel (16) is connected to one at each end of the steering gear assembly (13). The suspension (15) and the front wheel (16) are arranged in a one-to-one correspondence. The suspension (15) is connected to the corresponding front wheel (16). The shock absorber (17) is connected to one on each side of the two front wheels (16). The support mechanism (100) includes a support component (110), which includes a rectangular frame (111). An opening / closing component (120) is provided on the top side of the support component (110) away from the display (600). Two uprights A (112) are fixedly connected to the front side of the top of the rectangular frame (111). The opening / closing component (120) includes a U-shaped frame (121) rotatably connected between the two uprights A (112). A roller support mechanism (200) is located at the bottom of the inner cavity of the support mechanism (100) and is used to support the front wheel (16). The roller support mechanism (200) includes components fixedly connected to the rectangular frame (111). 1) Two horizontal bars B (210) at the top, and a support plate (220) is provided on each side of the surface of the rectangular frame (111). The connecting mechanism (300) includes two horizontal bars C (310). One end of the horizontal bar C (310) is fixedly connected to the adjacent upright bar B (113). The top end of the horizontal bar C (310) near the U-shaped frame (121) is fixedly connected to the upright bar D (320). The top of the upright bar D (320) is provided with a horizontal bar D (330) that is parallel to the horizontal bar B (210). The adjusting mechanism (400) includes a dual-axis motor (410) located below the rectangular frame (111). Both output shafts of the machine (410) are fixedly connected to a rotating rod (420) arranged parallel to the crossbar D (330). The end of the rotating rod (420) away from the dual-axis motor (410) is rotatably connected to a support block A (430). The top of the support block A (430) is fixedly connected to the bottom of the rectangular frame (111). The bottom of the rectangular frame (111) is fixedly connected to two symmetrical support blocks B (440). A bidirectional screw A (450) is rotatably connected between the two support blocks B (440). A movable plate (460) is threaded onto both sides of the surface of the bidirectional screw A (450). The movable plate (460) and the support plate (22) are connected to each other. 0) The two uprights D (320) are rotatably connected by a bearing and a double-acting screw B (470). A movable block (480) is threaded onto both sides of the surface of the double-acting screw B (470). The movable block (480) is rotatably connected to the crossbar D (330) and the top of the movable block (480) is fixedly connected to the bottom of the corresponding crossbar D (330). The rotating rod (420) is connected to the double-acting screw A (450) and the double-acting screw A (450) is connected to the double-acting screw B (470) by a pulley and belt drive, respectively.

2. The new energy vehicle electronic steering test bench according to claim 1, characterized in that: The support mechanism (100) provides a mounting base for the steering platform (14), suspension (15), roller mechanism (200), connecting mechanism (300), adjusting mechanism (400), controller (500) and display (600). The connecting mechanism (300) is located on top of the support mechanism (100) and is used to support the shock absorber (17). The adjusting mechanism (400) is used to adjust the distance between the roller mechanism (200) and the connecting mechanism (300) for use with different front wheel track automotive steering systems (1). The controller (500) is located on the front side of the top of the support mechanism (100), and the display (600) is located on the rear side of the top of the support mechanism (100).

3. The new energy vehicle electronic steering test bench according to claim 2, characterized in that: The controller (500) is mounted on the opening and closing assembly (120); the rear side of the top of the rectangular frame (111) is fixedly connected to a vertical rod B (113) that is parallel to the vertical rod A (112), and four vertical rods B (113) are arranged in a rectangular array. The top of the four vertical rods B (113) is fixedly connected to a mounting plate (114), and the display (600) is mounted on the top of the mounting plate (114). The front side of the inner cavity of the rectangular frame (111) is fixedly connected to a crossbar A (115), and the top of the crossbar A (115) is fixedly connected to the crossbar A (115). Both sides of the unit are fixedly connected to uprights C (116) that are parallel to uprights A (112). The top of uprights C (116) can be connected and fixed to the steering support (14). Both sides of the top of the rectangular frame (111) are fixedly connected to a column (117). The top of the column (117) can be connected and fixed to the suspension (15). The four corners of the bottom of the rectangular frame (111) are fixedly connected to a leg (118) in a vertical direction. The bottom of the leg (118) is equipped with a moving wheel (119) with a brake pad. The opening and closing assembly (120) and the connecting mechanism (300) are respectively arranged front and rear between the upright A (112) and the front upright B (113). The roller support mechanism (200) is located on the top of the rectangular frame (111) and is positioned between the upright C (116) and the front upright B (113). The adjusting mechanism (400) is located between the rectangular frame (111) and the connecting mechanism (300).

4. The new energy vehicle electronic steering test bench according to claim 3, characterized in that: The end of the U-shaped frame (121) is detachably connected to the connecting mechanism (300). Two V-shaped plates (122) are fixedly connected to the inner wall of the U-shaped frame (121). The two V-shaped plates (122) form a receiving space at the upper end of the steering column assembly (12). The V-shaped plates (122) are fixedly connected to the upper end of the steering column assembly (12). The controller (500) is installed on the side of the inner cavity of the U-shaped frame (121) away from the V-shaped plates (122).

5. The new energy vehicle electronic steering test bench according to claim 4, characterized in that: The column (117) is located between two crossbars B (210), with one crossbar B (210) located below the U-shaped frame (121) and the other crossbar B (210) located below the connecting mechanism (300). The crossbar B (210) is located between two support plates (220). A U-shaped plate (230) is movably provided on the surface of the support plate (220). The top of the U-shaped plate (230) can contact the bottom of the front wheel (16). A cylinder (240) is installed on the top of the support plate (220). The output end of the cylinder (240) is fixedly connected to the top of the inner cavity of the U-shaped plate (230). The inner wall of the U-shaped plate (230) is slidably connected to the surface of the support plate (220).

6. The new energy vehicle electronic steering test bench according to claim 5, characterized in that: The bottom end of the crossbar D (330) is fixedly connected to a mounting base (340), and the mounting base (340) is fixedly connected to the top of the shock absorber (17).

7. The new energy vehicle electronic steering test bench according to claim 6, characterized in that: A limiting rod (350) is fixedly connected to the bottom of the crossbar C (310). The end of the limiting rod (350) near the U-shaped frame (121) extends to the front side of the crossbar C (310). The front end of the limiting rod (350) is detachably connected to the end of the U-shaped frame (121) by bolts.

8. The new energy vehicle electronic steering test bench according to claim 6, characterized in that: Both ends of the crossbar B (210) are slidably provided with slide rods (211), one end of the slide rod (211) is fixedly connected to the adjacent support plate (220), and the surface of the crossbar D (330) is slidably fitted with a slide sleeve (321), which is fixedly connected to the top of the upright D (320).

9. The new energy vehicle electronic steering test bench according to claim 8, characterized in that: The dual-axis motor (410) is electrically connected to the controller (500), and a reinforcing plate (700) is fixedly connected between the two support blocks A (430), with the dual-axis motor (410) mounted on the top of the reinforcing plate (700).

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