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Energy-fed semi-active suspension variable damping system and a control method

A semi-active suspension and damping control technology, applied in suspension, elastic suspension, machine/engine, etc., can solve the problems of poor road adaptability, energy waste, etc., and achieve fast response speed, compact mechanism structure, and good linear characteristics Effect

Active Publication Date: 2019-01-04
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the adaptability of the road surface is poor, and it cannot guarantee a good damping effect under various road conditions. In addition, it also causes a waste of energy

Method used

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  • Energy-fed semi-active suspension variable damping system and a control method
  • Energy-fed semi-active suspension variable damping system and a control method
  • Energy-fed semi-active suspension variable damping system and a control method

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Embodiment Construction

[0027] In order to further explain the technical means and effects adopted by the invention to achieve the intended purpose of the invention, the specific implementation, structure, and features of the energy-feeding semi-active suspension variable damping system proposed in accordance with the present invention will be given below with reference to the drawings and embodiments. And its effects are described in detail later.

[0028] The present invention will be further explained below in conjunction with the drawings.

[0029] Reference figure 1 , An energy-feeding semi-active suspension variable damping system and control method, wherein the variable damping system includes an energy-feeding actuator and a damping control circuit.

[0030] Reference image 3 , The energy feeding actuator is composed of an outer sleeve 11 connected with the vehicle body, an inner sleeve 12 connected with the chassis, an energy feeding motor 21, a ball screw 33, a coupling 31 and a screw nut 32, whe...

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Abstract

The invention discloses an energy-fed semi-active suspension variable damping system and a control method thereof, which uses the energy-fed semi-active variable damping system instead of the traditional oil-liquid non-variable damper, and the variable damping system comprises an energy-fed actuator composed of an energy-fed motor and a ball screw mechanism, wherein the energy-fed actuator comprises a rectifier bridge, a DC-DC conversion circuit, energy storage equipment and controller constitute the energy recovery and damping control circuit. According to the road excitation condition, the variable damping system takes the output torque of the feed actuator as the control objective and the armature current of the motor as the control object, and realizes the regulation of damping and theenergy feedback at the same time by adjusting the duty cycle of the DC-DC converter circuit switch tube. The invention can realize the feedback of the vibration energy of the vehicle body, improve the fuel economy of the automobile and realize the damping adjustment of the actuator at the same time, has fast response speed and can effectively improve the ride comfort of the automobile.

Description

Technical field [0001] The invention belongs to the technical field of electric vehicle chassis, and specifically relates to an energy-feeding type semi-active suspension variable damping system and a control method. Background technique [0002] Suspension system is the general name of all the force transmission connection devices between the frame and the axle. It is an important part of the automobile driving system. Its main function is to act on the vertical, longitudinal and lateral reaction forces of the road surface on the wheels, and by The moment caused by these reaction forces is transmitted to the frame to ensure the smooth running of the car. The devices used to reduce vibration in the suspension system mainly include springs and dampers. The performance of the dampers largely determines the performance of the suspension system. [0003] At present, the damping of the most widely used suspension system damper is not adjustable, and it dissipates by converting the vibr...

Claims

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Application Information

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IPC IPC(8): B60G17/015B60G13/18F03G7/00
CPCB60G13/18B60G17/015F03G7/00
Inventor 徐俊蒲晓晖李士盈梅雪松
Owner XI AN JIAOTONG UNIV
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