摘要
重点研究了基于磁流变减振器的汽车半主动悬架及座椅的控制策略。建立了含座椅的八自由度悬架动力学车辆模型,提出了基于PID和模糊的混合控制策略。以离散凸起路面作为路面输入,车身质心垂直加速度为控制目标,研究了PID控制、模糊控制以及混合模糊PID控制3种控制策略。仿真结果表明,相比模糊和PID控制,混合模糊PID控制能更好地抑制车身垂直加速度以及座椅的振动,改善汽车平顺性。
This research fbcuses on tile strategies to control semi-active suspension and driver seat in vehiclesiml）lemented with Magneto-rheological （MR） fluid dampers. A dynamic model with 8-1）OF including seatanti suspension system was established; the hybrid filzzy logic PID control （HFLPID） strategy was presentedand adopted to improve the ride comibrt of vehicle. With the body vertical acceleration considered as thetarget when the vehicle passes over a discrete pavement, nunlerical simulation was carried out and threecontrol strategies were applied and compared. The simulation results show that compared with fhzzy or PID）, the HFLPID control strategy can attenuate the vibration of seat and bodysubstantially, and improved the ride comtbrt of vehicle much better The simulation identifies the effectiveness of the proposed new hybrid fuzzy PII） control strategy.
出处
《汽车工程学报》
2012年第4期263-269,共7页
Chinese Journal of Automotive Engineering
基金
重庆市科技攻关(CSTC
2008AC6097)项目资助
关键词
半主动悬架
磁流变减振器
混合模糊PID
座椅
semi-active suspension
magneto theological （MR） damper
hybrid fuzzy logic PID
seat
