摘要
为了研究半主动空气悬架系统对车辆行驶性能的影响,提出基于半主动空气悬架的模糊滑模backstepping控制。建立1/4二自由度半主动空气悬架动力学模型,用模糊逻辑系统逼近未知函数,解决了阻尼系数不易测的问题。该方法设计的控制器能够适应因车辆行驶状态或者环境发生改变而引起的系统参数在一定范围内的变化。仿真结果表明,与被动悬架相比,模糊滑模backstepping控制器对于提高半主动空气悬架系统减振效果更加明显。
In order to study the influence of semi-active air suspension system on vehicle traveling performance,a fuzzy sliding mode back-stepping control is proposed.Firstly,a 2-DOF quarter-car model for the semi-active air suspension system analysis is established.Then,the fuzzy logic systems are employed to asymptotically approach the unknown function and the problem that damping coefficient is uneasy to measure is solved.The controller designed in this method can be adapted to the change of the system parameters caused by the change of the vehicle traveling state or the environment within a certain range.The results show that,compared with passive suspension,the proposed fuzzy sliding mode back-stepping controller is more effective in improving the vibration reduction effect of the semi-active air suspension systems.
出处
《噪声与振动控制》
CSCD
2018年第1期109-113,共5页
Noise and Vibration Control
基金
辽宁省教育厅重大科技平台资助项目(JP2016012)
