Control of vehicle suspension using an adaptive inerter

被引:38
|
作者
Li, Panshuo [1 ]
Lam, James [1 ,2 ]
Cheung, Kie Chung [1 ]
机构
[1] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
[2] Univ Hong Kong, Shenzhen Inst Res & Innovat, Hong Kong, Hong Kong, Peoples R China
关键词
Adaptive control; inerter; semi-active control; vehicle suspension; vibration control; MULTIOBJECTIVE CONTROL; MECHANICAL NETWORKS; MODEL;
D O I
10.1177/0954407015574808
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In this paper, we study the suspension performances with an adaptive inerter under the assumption that the inertance may be adjusted in real-time. A quarter-car model with an inerter installed in parallel with a spring and a damper is considered. First, for a given suspension system, a study of the effects of using a fixed inerter is provided. It shows the difficulty in choosing a fixed inerter to satisfy the vehicle performances at the sprung mass natural frequency without deteriorating significantly at the unsprung mass natural frequency. Then, a state-feedback H-2 controller for an active suspension system is designed. The active force is approximated by an inerter with adjustable inertance. Ride quality, suspension deflection and tyre deflection performances are considered independently as the prime objective. Simulation results show that comparing with the passive suspension with fixed inerter, for ride quality and tyre deflection, the suspension with adaptive inerter can achieve improvement at the sprung mass natural frequency at the expense of a relatively small deterioration at the unsprung mass natural frequency. For suspension deflection, a better performance can be achieved at high frequencies with almost no loss of performance at other frequencies. This method is easier to implement in practice than the optimized passive suspension with a fixed inerter, which calls for complicated layout.
引用
收藏
页码:1934 / 1943
页数:10
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