Vehicle suspension vibration test system based on magnetorheological damper

Abstract

The utility model relates to a vehicle suspension vibration test system based on a magnetorheological damper. Comprising a shell, a load motor, a suspension, a suspension displacement sensor, a magnetorheological damper, wheels, an acceleration sensor I, an acceleration sensor II and a simulated road surface, the shell comprises a working platform and a box body, the suspension is arranged on the side wall, close to the working platform, of the box body in a vertically sliding mode, the suspension is connected with the wheels through the magnetorheological dampers, an acceleration sensor I and a suspension displacement sensor are arranged on the suspension, and an acceleration sensor II is arranged on the side, making contact with the magnetorheological dampers, of each wheel. The simulation pavement is arranged on the working platform and located below the wheels, pavement simulation of different working conditions is provided for the wheels, and the load motor drives the simulation pavement to rotate so as to drive the wheels to rotate. The device can be used for intuitively researching the influence of the magneto-rheological damper on the vibration reduction effect of the vehicle suspension.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of vehicle damping, concretely relates to a vehicle suspension vibration test system based on magneto rheological damper. BACKGROUND

[0002] With the high -speed development of economy, more and and more families have their own car, and the car has become an indispensable part of people's life. When we enjoy the great convenience that the car brings to our life, the safety and comfort of the car gradually become the focus of our attention, and to ensure the safety and comfort of the car, the vibration control of the car suspension is particularly important. The control of the suspension directly affects the comfort and safety of the vehicle in the driving process. But in practice, how to effectively and quickly control the vehicle suspension to achieve the effect of vibration reduction is not clear, the vehicle suspension vibration test system based on magneto rheological damper is used, and the performance of the suspension can be evaluated and optimized through vibration test, which is beneficial to reduce the vibration feeling of the passengers in the car and help to understand the performance of the suspension under different road conditions, so as to improve the vibration reduction characteristics of the vehicle.

[0003] The magneto rheological damper not only has fast response time, but also can control the output damping force in real time, realizing the expected control of high amplitude vibration. The magneto rheological damper is applied to the vehicle semi-active suspension system, which not only can ensure the smoothness of the vehicle in the driving process, reduce the impact and vibration from the ground and improve the riding comfort of the driver, but also can effectively reduce the fatigue of the driver, thereby improving the safety of the vehicle. But in practice, how the magneto rheological damper reduces the vibration of the vehicle semi-active suspension under different road conditions is not clear, and how to adjust the magneto rheological damper to achieve better vibration reduction effect needs to be studied. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a vehicle suspension vibration test system based on magneto rheological damper, so as to realize the dynamic display and optimization of the performance of the vehicle suspension under different road conditions.

[0005] The technical solution for realizing the utility model is as follows: a vehicle suspension vibration test system based on magneto rheological damper, including shell, load motor, suspension, suspension displacement sensor, magneto rheological damper, wheel, acceleration sensor I, acceleration sensor II and analog road surface;

[0006] The shell comprises a working platform and a box body, a suspension is slidably arranged on a side wall of the box body close to the working platform, the suspension and the wheel are connected through a magneto-rheological damper, an acceleration sensor I and a suspension displacement sensor are arranged on the suspension, an acceleration sensor II is arranged on the side of the wheel in contact with the magneto-rheological damper, an analog road surface is arranged on the working platform and below the wheel, the analog road surface provides different road surface analogs for the wheel, and a load motor drives the analog road surface to rotate, thereby driving the wheel to rotate.

[0007] Further, the suspension is in a U shape as a whole, the side wall of the box body is provided with a sliding rail, the bottom plate of the suspension is provided with a sliding block, and the suspension is slidably arranged on the side wall of the box body through the sliding block and the sliding rail.

[0008] Further, the suspension displacement sensor is arranged between the two upper and lower side walls of the suspension, and the acceleration sensor I of the suspension is arranged on the side wall below the suspension.

[0009] Further, the acceleration sensor I of the suspension is connected with the side wall below the suspension through a screw.

[0010] Further, the acceleration sensor II is arranged on the side of the wheel in contact with the magneto-rheological damper through a screw.

[0011] Further, the analog road surface is a rotary drum type, the rotary drum is provided with a rotating shaft, the rotating shaft is connected with a load motor, the load motor is arranged in the box body, the working platform is provided with a groove in a region corresponding to the analog road surface, the analog road surface is arranged at a position corresponding to the groove, the analog road surface protrudes out of the groove and contacts the wheel, and the wheel is driven to rotate through the rotating analog road surface.

[0012] Further, the rotary drum is replaceable, different rotary drums are replaced to simulate different road surface conditions.

[0013] Further, the current controller is further arranged, the current controller is connected with the magneto-rheological damper, the size of the internal coil current is controlled through the current controller to adjust the size of the output damping force.

[0014] Further, the suspension controller is further arranged in the box body, the suspension controller is connected with the suspension displacement sensor, the acceleration sensor II and the acceleration sensor I, and receives information collected by the sensors, and the suspension controller is connected with the current controller and controls the size of the output current of the current controller.

[0015] The display screen is arranged on the box body.

[0016] Further, the working mode of the magneto-rheological damper is a shear valve type, and the magneto-rheological damper comprises a damper cylinder body, a piston head, an excitation coil and a piston rod.

[0017] Compared with the prior art, the utility model has the following remarkable advantages:

[0018] (1) The utility model discloses a magnetorheological damper, can pass through real -time adjustment damping force, reaches better damping effect, is favorable to improve the steering of vehicle and the comfort of riding.

[0019] (2) The magnetorheological damper of the utility model is connected between the suspension and the wheel, so that the magnetorheological damper has short stroke and uniform stress, and can effectively reduce the amplitude. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole view of the vibration test system of the utility model.

[0021] Figure 2 It is the structure schematic view of the magnetorheological damper of the utility model.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1 - current controller, 2 - load motor, 3 - suspension controller, 4 - display screen, 5 - suspension displacement sensor, 6 - suspension, 7 - magnetorheological damper, 8 - wheel, 9 - acceleration sensor II, 10 - simulated road surface, 11 - acceleration sensor I, 12 - damper cylinder, 13 - piston head, 14 - excitation coil, 15 - piston rod. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail in combination with the drawings.

[0025] In order to improve the safety and the comfort of riding of the automobile described in the background art and meet the actual use requirement of magnetorheological damper, the utility model designs the vehicle suspension vibration test system based on magnetorheological damper, simulates different road conditions encountered in the process of vehicle driving through the rotation of wheel on simulated road surface, thereby utilizes the magnetorheological damper arranged in the middle of suspension to real-time reduce the impact and vibration from simulated road surface, thereby improves the comfort and safety of driver in the process of actual driving. The displacement sensor in the vehicle suspension obtains the suspension position signal, transmits the signal to the suspension controller, the suspension controller can calculate the optimum position of suspension, forms the signal, and transmits the signal to the current controller, adjusts the coil current size in magnetorheological damper through the current controller, thereby adjusts the damping force size according to the road condition, and real-time inhibits the vibration caused by external environment or irregular road surface.

[0026] The utility model solves the technical scheme that the technical scheme that the utility model solves technical problem includes: current controller 1, load motor 2, suspension controller 3, display screen 4, suspension displacement sensor 5, suspension 6, magnetorheological damper 7, wheel 8, vehicle body acceleration sensor and simulated road surface 10;

[0027] The suspension 6 is an iron alloy structure with upper, left and lower surfaces, and the left surface is connected to the protruding part of one side of the box of the test system through a sliding block connection; the suspension and the wheel together form a simulated vehicle body load, the suspension and the wheel are connected together through a magnetorheological damper, the magnetorheological damper is placed obliquely between the suspension and the wheel, and the magnetorheological damper and the suspension and the wheel are connected through a hinge connection; the vehicle body acceleration sensor includes an acceleration sensor I 11 and an acceleration sensor II 9, the acceleration sensor I 11 is connected below the suspension in a threaded connection manner and is used to measure the acceleration of the suspension, and the acceleration sensor II 9 is connected to the side of the wheel in contact with the magnetorheological damper in a threaded connection manner and is used to measure the acceleration of the wheel; the simulated road surface 10, the vehicle body acceleration sensor, the suspension displacement sensor 5 and the magnetorheological damper 7 are arranged on one side of the entire test system, the simulated road surface 10 is actually a groove in which a rotating drum with a protrusion on the outer surface is placed, when the test system is working, the rotating drum will rotate around a rod connected to the motor, and at the same time, the rotating drum will drive the wheel to rotate through the friction between the wheel and the rotating drum, when the wheel rotates through the protrusion on the rotating drum, the wheel, the magnetorheological damper and the suspension will vibrate up and down; the suspension controller 3, the load motor 2 and the display screen 4 are arranged on the other side of the entire test system, the upper half of the one side of the test system is the suspension controller 3 and the display screen 4, and the lower half is the load motor 2; the working mode of the magnetorheological damper 7 is a shear valve type, and the magnetorheological damper is composed of a damper cylinder body 12, a piston head 13, an excitation coil 14 and a piston rod 15. The magnetorheological damper 7 is connected to the current controller 1, and through the current controller, the change of the internal coil current size is controlled to adjust the output damping force size, and the vibration and impact of the vehicle caused by the uneven road surface are inhibited in real time.

[0028] The test system can be installed in a laboratory or a teaching place, and users can change different road conditions (such as A-level road model, B-level road model, etc.) by replacing the rotating drum in the groove, when the rotating drum rolls to drive the wheel to rotate, the system automatically adjusts the damping coefficient of the magnetorheological damper, and the vibration of the suspension is fed back in real time. For example, when simulating an A-level road, the sensor module quickly obtains the dynamic response of the current vehicle, calculates the optimal damping force, and the magnetorheological damper adjusts immediately to ensure the stability of the vehicle body. This process visualizes the results through the display screen, so that learners can intuitively understand the working principle and advantages of the suspension system under the adjustment of the magnetorheological damper.

Claims

1. A vehicle suspension vibration test system based on a magneto-rheological damper, characterized in that, It comprises a shell, a load motor (2), a suspension (6), a suspension displacement sensor (5), a magneto-rheological damper (7), a wheel (8), an acceleration sensor I (11), an acceleration sensor II (9) and a simulated road surface (10). The shell comprises a working platform and a box, the suspension (6) is slidably arranged on the side wall of the box near the working platform, the suspension (6) and the wheel (8) are connected through the magneto-rheological damper (7), the acceleration sensor I (11) and the suspension displacement sensor (5) are arranged on the suspension (6), the acceleration sensor II (9) is arranged on the side of the wheel contacting the magneto-rheological damper, the simulated road surface (10) is arranged on the working platform and below the wheel (8) to simulate different road conditions for the wheel (8), and the load motor (2) drives the simulated road surface (10) to rotate, thereby driving the wheel (8) to rotate.

2. The vehicle suspension vibration test system of claim 1, wherein The suspension (6) is in a whole U shape, the side wall of the box is provided with a sliding rail, the bottom plate of the suspension (6) is provided with a sliding block, and the suspension (6) is slidably arranged on the side wall of the box through the sliding block and the sliding rail.

3. The vehicle suspension vibration test system of claim 2, wherein, The suspension displacement sensor (5) is arranged between the two upper and lower side walls of the suspension (6), and the suspension acceleration sensor I (11) is arranged on the side wall below the suspension (6).

4. The vehicle suspension vibration test system of claim 3, wherein, The suspension acceleration sensor I (11) is connected to the side wall below the suspension (6) through screws.

5. The vehicle suspension vibration test system of claim 4, wherein, The side of the wheel contacting the magneto-rheological damper is provided with the acceleration sensor II (9) through screws.

6. The vehicle suspension vibration test system of claim 5, wherein, The simulated road surface (10) is a rotary drum type, the rotary drum is provided with a rotating shaft, the rotating shaft is connected to the load motor (2), the load motor (2) is arranged in the box, the area corresponding to the simulated road surface on the working platform is provided with a groove, the simulated road surface is arranged at the position corresponding to the groove, the simulated road surface protrudes out of the groove and contacts the wheel, and the wheel is driven to rotate through the rotating simulated road surface.

7. The vehicle suspension vibration test system of claim 6, wherein The rotary drum is replaceable, different rotary drums are replaced to simulate different road conditions.

8. The vehicle suspension vibration test system of claim 7, wherein, It also comprises a current controller (1), the current controller (1) is connected to the magneto-rheological damper (7), the current controller controls the change of the internal coil current to adjust the output damping force.

9. The vehicle suspension vibration test system of claim 8, wherein, The box is also provided with a suspension controller (3), the suspension controller (3) is connected to the suspension displacement sensor (5), the acceleration sensor II (9) and the acceleration sensor I (11) and receives the information collected by the sensors, the suspension controller (3) is connected to the current controller (1) and controls the size of the current output by the current controller; The box is provided with a display screen (4).

10. The vehicle suspension vibration test system of claim 9, wherein, The working mode of the magneto-rheological damper (7) is a shear valve type, and the magneto-rheological damper comprises a damper cylinder (12), a piston head (13), an excitation coil (14) and a piston rod (15).

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