Automotive energy-regenerative active suspension system with rigidity and damping variable

A technology of active suspension and variable stiffness, which is applied in the direction of suspension, elastic suspension, vehicle components, etc., can solve the problems that the stiffness and damping cannot be adjusted in real time, the stiffness adjustment is difficult, and the energy required is large, etc., to achieve good control Stability and smoothness, saving energy consumption, simple structure and control algorithm

Active Publication Date: 2014-09-03
JILIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] At present, most of the commonly used active suspension forms are realized by direct coupling of air springs, double-acting cylinders and high-speed response hydraulic control valves, but they all have disadvantages such as slow response, complex structure, large volume, and high energy requirements.

Method used

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  • Automotive energy-regenerative active suspension system with rigidity and damping variable
  • Automotive energy-regenerative active suspension system with rigidity and damping variable
  • Automotive energy-regenerative active suspension system with rigidity and damping variable

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Embodiment Construction

[0028] like figure 1 and figure 2As shown, the present invention relates to a vehicle energy-feeding active suspension system with variable stiffness and damping, including three parts: a suspension variable stiffness mechanism, a suspension energy-feeding mechanism and an active suspension control system. The suspension variable stiffness mechanism includes small stiffness springs arranged up and down between the sprung mass M (i.e. the vehicle body 1) and the unsprung mass m (i.e. the lower swing arm of the independent suspension or the axle 23 of the non-independent suspension) 14. Magneto-rheological damper 15 (or called magnetorheological shock absorber) and large stiffness spring 19, the unsprung mass m of this embodiment is the lower swing arm 23 of the independent suspension as an example; the magnetorheological damper The upper end of the piston rod of the device 15 is affixed to a connection flange 11 through the piston rod screw 9, and the connection flange 11 is ...

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Abstract

The invention discloses an automotive energy-regenerative active suspension system with rigidity and damping variable. The suspension system comprises a suspension variable-rigidity mechanism, a suspension energy-regenerative mechanism and an active suspension control system. The suspension variable-rigidity mechanism comprises a low-rigidity spring, a magneto-rheological damper and a high-rigidity spring. The suspension energy-regenerative mechanism is formed by bi-directionally connecting a linear motor, an energy-regenerative circuit and a storage battery in sequence. The active suspension control system includes a controller. The data input end of the controller is connected with a vibration measuring and processing circuit. The magneto-rheological damper and the control input end of the linear motor are respectively connected with the control output end of the controller. The suspension system can automatically adjust the damping and rigidity at the same time, so that the good steering stability and ride comfort of a finished automobile are achieved; the control system is high in response speed; energy consumption is substantially lowered, and therefore the economy requirement of the finished automobile is met; moreover, the structure and a control algorithm are simple, working is stable and reliable, service life is long, and the suspension system can be conveniently applied to an existing automotive suspension so that real-time control can be achieved.

Description

technical field [0001] The invention relates to a suspension system for automobiles, more specifically, to an energy-feeding active suspension system for automobiles with variable stiffness and damping. Background technique [0002] The automobile suspension system has a great influence on the ride comfort and handling stability of the whole vehicle. Therefore, the suspension system has been widely studied in recent years. At present, the suspension system can be divided into three categories: passive suspension, semi-active suspension and active suspension. Passive suspension is a traditional all-mechanical suspension system. It has the advantages of simple structure, reliable performance, low cost, and no need for additional energy, so it is the most widely used; shortcoming. Semi-active suspension uses passive but parameter-adjustable passive components (usually damping components) to replace the active components of the actuator, which can partially improve ride comfor...

Claims

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Application Information

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IPC IPC(8): B60G17/015B60G17/08B60G13/14
Inventor 王军年叶涛孙文马清芝王庆年
Owner JILIN UNIV
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