摘要
基于功率流方法,研究一种同时含有被动和主动结构的新型主动悬架。在这种结构中,主动控制力由电磁反力作动器产生,并且仅作用于汽车的非悬挂质量上。以某车型两自由度1/4模型为研究对象,采用结构导纳理论,建立路面输给悬架系统的总功率流、传递给车身的功率流及由电磁作动器耗散的功率流模型。设计以传递给车身的功率流为最小的最优控制策略,分析该电磁反力混合型主动悬架的性能。结果表明该悬架系统能较好地改善汽车在高频段的平顺性和轮胎的触地性,提高汽车行驶的平顺性和操作稳定性。
In this paper, a new electromagnetic hybrid active-passive vehicle suspension system was studied based on power flow method. In this system, the active controlling force was generated by the electromagnetic actuator, and the force was applied to the non-sprung mass of the automobile. Taking a quarter of automobile as an example, the total power flow input from the road to the suspension system, the power flow transmitted to the vehicle body, and the power flow dissipation of the electromagnetic actuator were analyzed based on the theory of structure mobility. The optimal control strategy that the power flow transmitted to the vehicle body was minimum, was applied to analyze the performance of the suspension system. Results show that the hybrid active-passive-suspension is able to improve the riding comfortable and tyre-road surface contact condition of the automobile.
出处
《噪声与振动控制》
CSCD
北大核心
2008年第5期21-24,共4页
Noise and Vibration Control
关键词
振动与波
电磁反力混合型主动悬架
电磁作动器
功率流
最优控制
vibration and wave
electromagnetic hybrid active-passive suspension
electromagnetic actuator
power flow
optimal control
