Automobile ABS computer simulation experiment device and simulation test method thereof

Abstract

The invention discloses an automobile ABS computer simulation experiment device and a simulation test method thereof, and relates to the technical field of automobile equipment detection. The device comprises a test bench, the top of the test bench is provided with a vehicle frame, and the top of the vehicle frame is provided with a visual detection probe; the top of the test board is provided with a detection assembly, the detection assembly comprises a vehicle shell, the vehicle shell is fixedly connected to the top of the vehicle frame, the top of the vehicle shell is provided with a balancing weight, and the top of the test board is provided with an asphalt pavement layer, a gravel pavement layer and a muddy water layer pavement. Through the arrangement of the detection assembly, the driving machine can be used for driving the simulation vehicle body to run on the top of the test board, the asphalt pavement layer, the gravel pavement layer and the muddy water layer pavement are used for simulating different vehicle running road conditions, and meanwhile the running path of the simulation vehicle body is detected through the visual detection probe; and after the simulation vehicle body is in the braking state, the path of vehicle deviation caused by ABS work is captured, and the function of automatically collecting data can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile equipment detection, and in particular relates to an automobile ABS computer simulation experimental device and a simulation test method thereof. Background Art

[0002] Automobile ABS (anti-lock braking system) computer simulation experiment is a method to analyze and verify the automobile ABS system through computer simulation technology. The experiment establishes a mathematical model of the ABS system, combines the vehicle dynamic model, road friction and other factors, and then evaluates the working effect and performance of the ABS system. Through simulation experiments, the control algorithm of the ABS system can be optimized to ensure safety and stability in various complex situations. At the same time, it can also reduce the loss of the vehicle in actual tests and improve R&D efficiency. ABS computer simulation experiments are an indispensable part of modern automotive engineering and are widely used in the design, verification and improvement of ABS systems.

[0003] The current automobile ABS computer simulation experimental device usually uses a bracket to prop up the vehicle body and uses a static test method for testing. The pressure of the frame weight on the wheel is in a constant state, and when the brake pump is working, the braking force of the wheel is linearly transmitted, which cannot simulate the impact of different roads on the tire in real road conditions. In addition, the impact of the frame weight on the brake inertia makes the test data inaccurate. To this end, we provide an automobile ABS computer simulation experimental device and its simulation test method to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a computer simulation experimental device for automobile ABS and a simulation test method thereof, which solves the problem that the computer simulation experimental device for automobile ABS in the prior art is not accurate enough in simulating the actual road conditions through the cooperation of a detection component, a simulation component and an adjustment component.

[0005] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0006] The invention discloses a computer simulation experimental device for automobile ABS and a simulation test method thereof, comprising a test bench, wherein a frame is arranged on the top of the test bench, and a visual detection probe is arranged on the top of the frame; a detection component is arranged on the top of the test bench, and the detection component comprises a vehicle shell, wherein the vehicle shell is fixedly connected to the top of the frame, and a counterweight is arranged on the top of the vehicle shell; an asphalt pavement layer, a gravel pavement layer and a muddy and water pavement layer are respectively installed on the top of the test bench, and different road conditions are simulated by the detection component; a simulation component is arranged inside the frame, and the simulation component comprises a transmission shaft, wherein the transmission shaft is installed inside the frame, tires are installed on the front and rear sides of the transmission shaft, brake discs and wheel speed sensors are respectively installed on the surface of the transmission shaft, brakes are installed on the surface of the brake disc, a brake regulator is installed on the top of the frame, and an ABS controller is installed on the top of the brake regulator, and ABS data is collected by the simulation component; an adjustment component is arranged on the top of the vehicle shell, and the adjustment component comprises a guide plate, wherein the guide plate is installed on the top of the vehicle shell, and a bottom plate is slidably connected inside the guide plate, and the number of counterweights is adjusted by the adjustment component.

[0007] The present invention is further configured such that the adjustment component also includes a cross frame, which is fixedly connected to the front and rear sides of the guide rail plate respectively, and a moving block is slidably connected inside the cross frame, and a stop rod is arranged on the top of the moving block.

[0008] The present invention is further configured such that the front and rear sides of the blocking rod are both fixedly connected to a rotating plate, one side of the rotating plate is fixedly connected to a rotating shaft, one side of the rotating shaft penetrates into the interior of the moving block and is fixedly connected to a cam.

[0009] The present invention is further configured such that a push plate is slidably connected to the top of the cam, vertical rods are fixedly connected to both sides of the push plate, a movable plate is fixedly connected to the bottom of the vertical rod, a limiting block is fixedly connected to the front side of the movable plate, and a limiting groove is provided inside the cross frame.

[0010] The present invention is further configured such that a clockwork spring is fixedly connected to the surface of the rotating shaft, one end of the clockwork spring is fixedly connected to the inner wall of the moving block, and the surface of the rotating shaft is movably connected to the inner wall of the moving block via a bearing.

[0011] The present invention is further configured such that a slide bar is fixedly connected inside the moving block, the top of the slide bar passes through the moving plate and is fixedly connected to a limiting plate, and a return spring is sleeved on the surface of the slide bar.

[0012] The present invention is further configured such that the bottom of the counterweight block is fixedly connected to the base plate, and the top of the visual detection probe is fixedly connected to a bracket.

[0013] The present invention is further configured such that the simulation component also includes an indicator light, which is installed on the top of the ABS controller, a brake pump is installed on the top of the brake regulator, and a brake pedal is installed on one side of the brake pump.

[0014] The present invention is further configured such that a sand pit table is installed at one side of the test bench, and a driving machine is installed inside the frame.

[0015] A vehicle ABS computer simulation experimental test method comprises the following steps:

[0016] S1: After the staff moves the frame to the top of the test bench, they can use the drive motor to drive the simulated vehicle body to travel on the top of the test bench, and use the asphalt road layer, gravel road layer and muddy road layer to simulate different vehicle driving conditions. At the same time, the visual detection probe is used to detect the driving path of the simulated vehicle body.

[0017] S2: During the simulation, the ABS controller monitors the rotation speed information of each tire in real time through the wheel speed sensor and collects data related to the vehicle's driving status. Based on the data transmitted by the sensor, the ABS controller determines whether there is a risk of tire locking. If so, the ABS controller will adjust the brake pressure through the brake regulator to avoid tire locking, thereby improving the stability and safety of the vehicle.

[0018] S3: After the driving data on different roads are collected, the number of counterweights on the top of the vehicle shell can be increased to simulate different numbers of passengers in the vehicle. When the weight on the top of the frame increases, the driving inertia of the simulated vehicle will increase. In this way, the ABS controller of the vehicle can be adjusted in time to keep the vehicle stable under different vehicle conditions, thereby increasing the comparative data of the experiment.

[0019] S4: When it is necessary to reduce the counterweight, the staff can hold the lever and make it rotate upward with the rotating shaft as the axis. When the rotating shaft rotates, it drives the cam to rotate, and the cam pushes the movable plate and the vertical rod to move. The vertical rod cooperates with the movable plate to drive the limit block to disengage from the limit slot, canceling the limit on the movable block. When the lever rotates, the limit on the counterweight is released, and then a group of counterweights are pushed to the left and the guide plate is taken out, so that the experimenters can increase or decrease the counterweights and increase the experimental data under different weight states of the vehicle.

[0020] The present invention has the following beneficial effects.

[0021] 1. The present invention can use a driving machine to drive the simulated vehicle body to travel on the top of the test bench through the setting of the detection component, and use an asphalt road surface layer, a gravel road surface layer and a muddy and water layer road surface to simulate different vehicle driving conditions. At the same time, the driving path of the simulated vehicle body is detected by a visual detection probe, and the route of the vehicle deviation caused by the ABS operation after the simulated vehicle body is in a braking state is captured, which can play a role in automatically collecting data.

[0022] 2. Through the setting of simulation components, the present invention can monitor the rotation speed information of each tire in real time through the wheel speed sensor during the simulation process, collect data related to the vehicle's driving status, and according to the data transmitted by the sensor, the ABS controller will adjust the brake pressure through the brake regulator to avoid tire locking, thereby improving the stability and safety of the vehicle.

[0023] 3. The present invention can increase or decrease the counterweight by adjusting the settings of the components to simulate different numbers of passengers in the vehicle. When the weight on the top of the frame increases, the driving inertia of the simulated vehicle will increase. This is used to simulate whether the vehicle ABS controller can be adjusted in time under different vehicle states to keep the vehicle stable and increase experimental comparison data.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0026] Figure 1 The present invention is a stereoscopic diagram of an automobile ABS computer simulation experimental device and a simulation test method thereof.

[0027] Figure 2 The figure is a rear view of a vehicle frame in a computer simulation experimental device for automobile ABS and a simulation test method thereof.

[0028] Figure 3 The present invention is a schematic diagram of the top structure of a vehicle frame in a computer simulation experimental device for automobile ABS and a simulation test method thereof.

[0029] Figure 4 The present invention is a side view of a vehicle shell in an automobile ABS computer simulation experimental device and a simulation test method thereof.

[0030] Figure 5 The present invention is a partial cross-sectional view of a cross frame in an automobile ABS computer simulation experimental device and a simulation test method thereof.

[0031] Figure 6The present invention is a cross-sectional view of a moving block in an automobile ABS computer simulation experimental device and a simulation test method thereof.

[0032] Figure 7 The present invention is a schematic diagram of the rotation of the gear lever in an automobile ABS computer simulation experimental device and a simulation test method thereof.

[0033] In the attached figure: 1, test bench; 2, frame; 3, visual inspection probe; 4, body shell; 5, counterweight; 6, asphalt pavement layer; 7, gravel pavement layer; 8, muddy and water pavement layer; 9, transmission shaft; 10, tire; 11, brake disc; 12, wheel speed sensor; 13, brake; 14, brake regulator; 15, ABS controller; 16, guide plate; 17, bottom plate; 18, cross frame; 19, moving block; 20, stop rod; 21, rotating plate; 22, rotating shaft; 23, cam; 24, push plate; 25, vertical rod; 26, moving plate; 27, limit block; 28, limit groove; 29, clockwork spring; 30, slide bar; 31, limit plate; 32, reset spring; 33, indicator light; 34, brake pump; 35, brake pedal; 36, sand pit table; 37, driving machine. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Embodiment 1

[0036] See also Figure 1-7 The present invention is a computer simulation experimental device for automobile ABS and a simulation test method thereof, comprising a test bench 1, a frame 2 is arranged on the top of the test bench 1, and a visual detection probe 3 is arranged on the top of the frame 2; a detection component is arranged on the top of the test bench 1, and the detection component includes a car shell 4, the car shell 4 is fixedly connected to the top of the frame 2, and a counterweight 5 is arranged on the top of the car shell 4; an asphalt pavement layer 6, a gravel pavement layer 7 and a muddy and water pavement layer 8 are respectively installed on the top of the test bench 1, and different road conditions are simulated by the detection component; a simulation component is arranged inside the frame 2, and the simulation component includes a transmission shaft 9, and the transmission shaft 9 is installed at Inside the frame 2, tires 10 are installed on the front and rear sides of the transmission shaft 9, brake discs 11 and wheel speed sensors 12 are installed on the surface of the transmission shaft 9 respectively, brakes 13 are installed on the surface of the brake discs 11, a brake regulator 14 is installed on the top of the frame 2, an ABS controller 15 is installed on the top of the brake regulator 14, and ABS data is collected through simulation components; an adjustment component is arranged on the top of the vehicle shell 4, the adjustment component includes a guide plate 16, the guide plate 16 is installed on the top of the vehicle shell 4, a bottom plate 17 is slidably connected inside the guide plate 16, and the number of counterweights 5 is adjusted by the adjustment component.

[0037] Specifically: the bottom of the counterweight 5 is fixed to the bottom plate 17, one side of the guide plate 16 is a through design, and the bottom plate 17 can be inserted from one side of the guide plate 16 to complete the rapid fixation of the counterweight 5. The asphalt pavement layer 6, the gravel pavement layer 7 and the muddy and water layer pavement 8 can simulate different road conditions to improve the accuracy of the detection data. The ABS controller 15 is connected to the wheel speed sensor 12 to monitor the rotation speed of each wheel in real time. When the ABS controller 15 detects that the wheel may be locked, it will automatically adjust the pressure of the braking system. By controlling the braking pressure, the ABS system can continuously adjust during the braking process to keep the wheel in a suitable slip rate range. Under complex road conditions (such as wet, icy, muddy, etc.), the ABS controller 15 can adjust the braking force to avoid vehicle loss of control to the greatest extent, ensure the shortest braking distance, and maintain the controllability of the steering wheel.

[0038] Embodiment 2

[0039] See also Figure 1-7 On the basis of the first embodiment, the adjustment component also includes a cross frame 18, which is fixedly connected to the front and rear sides of the guide plate 16 respectively, and a moving block 19 is slidably connected inside the cross frame 18. A stopper 20 is arranged on the top of the moving block 19, and a rotating plate 21 is fixedly connected to the front and rear sides of the stopper 20. A rotating shaft 22 is fixedly connected to one side of the rotating plate 21, and one side of the rotating shaft 22 penetrates into the inside of the moving block 19 and is fixedly connected to a cam 23. A push plate 24 is slidably connected to the top of the cam 23, and vertical rods 25 are fixedly connected to both sides of the push plate 24. A moving plate 26 is fixedly connected to the bottom of the vertical rod 25, and a limiting block 27 is fixedly connected to the front side of the moving plate 26. A limiting groove 28 is provided inside the cross frame 18, and a clockwork spring 29 is fixedly connected to the surface of the rotating shaft 22. One end of the clockwork spring 29 is fixedly connected to the inner wall of the moving block 19, and the surface of the rotating shaft 22 is movably connected to the inner wall of the moving block 19 through a bearing.

[0040] Specifically: The visual detection probe 3 captures real-time images of the vehicle during driving, and the image data is transmitted to the computer vision system for further processing. The camera uses high-definition resolution and high-speed frame rate to ensure that the position and dynamic changes of the vehicle can be accurately captured. Through continuous image frames and vehicle recognition results, the visual system can track the movement trajectory of the vehicle. The vehicle position of each frame of the image is recorded. Based on these position points, the vehicle's driving path can be calculated, and the data after the vehicle's emergency braking can be recorded and fed back through the visual detection probe 3.

[0041] Embodiment 3

[0042] See also Figure 1-7On the basis of the first embodiment, a sliding rod 30 is fixedly connected inside the moving block 19, the top of the sliding rod 30 passes through the moving plate 26 and is fixedly connected to the limiting plate 31, a reset spring 32 is sleeved on the surface of the sliding rod 30, the bottom of the counterweight block 5 is fixedly connected to the bottom plate 17, the top of the visual detection probe 3 is fixedly connected to a bracket, the simulation component also includes an indicator light 33, the indicator light 33 is installed on the top of the ABS controller 15, a brake pump 34 is installed on the top of the brake regulator 14, a brake pedal 35 is installed on one side of the brake pump 34, a sand pit platform 36 is installed on one side of the test bench 1, and a driving machine 37 is installed inside the frame 2.

[0043] Specifically: the top of the cam 23 is in contact with the push plate 24, and the cam 23 can be used to push the push plate 24 to move when the rotating shaft 22 rotates. When the limit block 27 is inserted into the limit groove 28, the position of the moving block 19 can be fixed. The clockwork spring 29 is installed between the rotating shaft 22 and the inner wall of the moving block 19. The clockwork spring 29 has the function of winding and storing energy, and can transmit the elastic force to the baffle rod 20 so that the baffle rod 20 is always in contact with the top of the guide plate 16. The reset spring 32 has the function of compressing and storing energy, and can reset the moving plate 26. The elastic force of the clockwork spring 29 is greater than the elastic force of the reset spring 32. The inside of the sand pit is filled with sand, which can weaken the power of the simulated vehicle when the simulated vehicle loses control, thereby improving the safety of the experiment. The driving machine 37 is used to drive the simulated vehicle.

[0044] The working principle of the present invention is as follows: after the staff moves the vehicle frame 2 to the top of the test bench 1, the driving machine 37 can be used to drive the simulated vehicle body to travel on the top of the test bench 1, and the asphalt pavement layer 6, the gravel pavement layer 7 and the muddy and water layer pavement 8 can be used to simulate different vehicle driving conditions. At the same time, the visual detection probe 3 is used to detect the driving path of the simulated vehicle body, and the route of the vehicle deviation caused by the ABS operation after the simulated vehicle body is in the braking state is captured, which can play a role in automatically collecting data.

[0045] During the simulation process, the ABS controller 15 monitors the rotation speed information of each tire 10 in real time through the wheel speed sensor 12, and collects data related to the vehicle's driving status. Based on the data transmitted by the sensor, the ABS controller 15 determines whether there is a risk of the tire 10 locking. If so, the ABS controller 15 will adjust the brake pressure through the brake regulator 14 to avoid the tire 10 from locking, thereby improving the stability and safety of the vehicle. The ABS controller 15 is used to collect and compile data during the simulated vehicle driving process to help staff compare experimental data after subsequent hardware parameter adjustments.

[0046] After the driving data on different roads are collected, the number of counterweights 5 on the top of the vehicle shell 4 can be increased to simulate different numbers of passengers in the vehicle. When the weight on the top of the frame 2 is increased, the driving inertia of the simulated vehicle will increase, so as to simulate whether the vehicle ABS controller 15 can be adjusted in time under different vehicle states to keep the vehicle stable and increase the comparative data of the experiment.

[0047] When reducing the counterweight block 5, the staff can hold the blocking rod 20 and make the blocking rod 20 rotate upward with the rotating shaft 22 as the axis. When the rotating shaft 22 rotates, it drives the cam 23 to rotate, and the cam 23 pushes the movable plate 26 and the vertical rod 25 to move. The vertical rod 25 cooperates with the movable plate 26 to drive the limit block 27 to disengage from the limit groove 28, canceling the limit on the movable block 19. When the blocking rod 20 rotates, the limit on the counterweight block 5 is released, and then a group of counterweight blocks 5 are pushed to the left, the guide plate 16 is taken out, and then the blocking rod 20 is pushed, so that the movable block 19 hit by the blocking rod 20 moves at the same time and aligns with the counterweight block 5 on the right side, and then the blocking rod 20 is released. At this time, the clockwork spring 29 will drive the rotating shaft 22 to reset, and the reset spring 32 will reset the movable plate 26, so that the limit block 27 is inserted into the limit groove 28 again, and the subsequent counterweight block 5 can be quickly fixed, which is convenient for the experimenter to increase or decrease the counterweight block 5 and increase the experimental data under different weight states of the vehicle.

[0048] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. A computer simulation experimental device for automobile ABS, comprising a test bench (1), characterized in that: A frame (2) is arranged on the top of the test bench (1), and a visual detection probe (3) is arranged on the top of the frame (2); A detection component is arranged on the top of the test bench (1), the detection component comprises a vehicle shell (4), the vehicle shell (4) is fixedly connected to the top of the vehicle frame (2), a counterweight block (5) is arranged on the top of the vehicle shell (4), an asphalt pavement layer (6), a gravel pavement layer (7) and a muddy and water pavement layer (8) are respectively installed on the top of the test bench (1), and different road conditions are simulated by the detection component; A simulation component is arranged inside the vehicle frame (2), and the simulation component includes a transmission shaft (9), the transmission shaft (9) is installed inside the vehicle frame (2), tires (10) are installed on the front and rear sides of the transmission shaft (9), brake discs (11) and wheel speed sensors (12) are installed on the surface of the transmission shaft (9), brakes (13) are installed on the surface of the brake discs (11), a brake regulator (14) is installed on the top of the vehicle frame (2), and an ABS controller (15) is installed on the top of the brake regulator (14), and ABS data is collected through the simulation component; An adjustment component is provided on the top of the vehicle shell (4), and the adjustment component comprises a guide rail plate (16). The guide rail plate (16) is installed on the top of the vehicle shell (4), and a bottom plate (17) is slidably connected inside the guide rail plate (16). The number of counterweights (5) is adjusted by the adjustment component.

2. The automobile ABS computer simulation experimental device according to claim 1, characterized in that: The adjustment assembly also includes a cross frame (18), which is fixedly connected to the front side and the rear side of the guide rail plate (16) respectively, and a moving block (19) is slidably connected inside the cross frame (18), and a stop rod (20) is arranged on the top of the moving block (19).

3. The automobile ABS computer simulation experimental device according to claim 2 is characterized in that: The front and rear sides of the blocking rod (20) are both fixedly connected to a rotating plate (21), one side of the rotating plate (21) is fixedly connected to a rotating shaft (22), and one side of the rotating shaft (22) penetrates into the interior of the moving block (19) and is fixedly connected to a cam (23).

4. The automobile ABS computer simulation experimental device according to claim 3 is characterized in that: The top of the cam (23) is slidably connected to a push plate (24), both sides of the push plate (24) are fixedly connected to vertical rods (25), the bottom of the vertical rod (25) is fixedly connected to a moving plate (26), the front side of the moving plate (26) is fixedly connected to a limiting block (27), and a limiting groove (28) is provided inside the cross frame (18).

5. The automobile ABS computer simulation experimental device according to claim 3 is characterized in that: A spring (29) is fixedly connected to the surface of the rotating shaft (22), one end of the spring (29) is fixedly connected to the inner wall of the moving block (19), and the surface of the rotating shaft (22) is movably connected to the inner wall of the moving block (19) via a bearing.

6. The automobile ABS computer simulation experimental device according to claim 2, characterized in that: A sliding rod (30) is fixedly connected inside the moving block (19); the top of the sliding rod (30) passes through the moving plate (26) and is fixedly connected to a limiting plate (31); and a return spring (32) is sleeved on the surface of the sliding rod (30).

7. The automobile ABS computer simulation experimental device according to claim 1 is characterized in that: The bottom of the counterweight block (5) is fixedly connected to the bottom plate (17), and the top of the visual detection probe (3) is fixedly connected to a bracket.

8. The automobile ABS computer simulation experimental device according to claim 1 is characterized in that: The simulation component also includes an indicator light (33), which is installed on the top of the ABS controller (15). A brake pump (34) is installed on the top of the brake regulator (14), and a brake pedal (35) is installed on one side of the brake pump (34).

9. The automobile ABS computer simulation experimental device according to claim 1, characterized in that: A sand pit platform (36) is installed on one side of the test bench (1), and a driving machine (37) is installed inside the vehicle frame (2).

10. A vehicle ABS computer simulation experiment test method, based on a vehicle ABS computer simulation experiment device according to any one of claims 1 to 9, characterized in that: The steps include: S1: After the staff moves the vehicle frame (2) to the top of the test bench (1), the driving machine (37) can be used to drive the simulated vehicle body to travel on the top of the test bench (1), and the asphalt road surface layer (6), the gravel road surface layer (7) and the muddy road surface layer (8) can be used to simulate different vehicle driving conditions, and the visual detection probe (3) can be used to detect the driving path of the simulated vehicle body; S2: During the simulation process, the ABS controller (15) monitors the rotation speed information of each tire (10) in real time through the wheel speed sensor (12) and collects data related to the driving state of the vehicle. Based on the data transmitted by the sensor, the ABS controller (15) determines whether there is a risk of the tire (10) locking. If there is a risk, the ABS controller (15) adjusts the brake pressure through the brake regulator (14) to avoid the tire (10) locking, thereby improving the stability and safety of the vehicle; S3: After the driving data on different roads are collected, the number of counterweights (5) on the top of the vehicle shell (4) can be increased to simulate different numbers of passengers in the vehicle. When the weight on the top of the frame (2) is increased, the driving inertia of the simulated vehicle will increase, thereby simulating whether the vehicle ABS controller (15) can be adjusted in time to keep the vehicle stable under different vehicle states, thereby increasing the comparative data of the experiment; S4: When it is necessary to reduce the counterweight (5), the staff can hold the stopper (20) to rotate the stopper (20) upward with the rotating shaft (22) as the axis. When the rotating shaft (22) rotates, it drives the cam (23) to rotate. The cam (23) drives the movable plate (26) and the vertical rod (25) to move. The vertical rod (25) cooperates with the movable plate (26) to drive the limit block (27) to disengage from the limit groove (28), canceling the limit on the movable block (19). When the stopper (20) rotates, the limit on the counterweight (5) is released, and then a group of counterweights (5) are pushed to the left, and the guide plate (16) is taken out, so that the experimenter can increase or decrease the counterweight (5) conveniently, and increase the experimental data under different weight states of the vehicle.

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