摘要
在线性最优控制理论的基础上，采用轴间预瞄技术和Ｐａｄｅ近似方法，建立考虑前、后车轮下路面不平度输入相关性的汽车半主动悬架系统动力学模型和控制律，以优化连续阻尼和部分系统动态响应量作为参数，构造半主动悬架系统的离散优化阻尼控制律。提出的半主动悬架控制方法能改善乘坐舒适性。
In this paper the wheelbase preview is realized by means of the Pade approximation and a semi active control law with a partial state feedback is produced on the basis of the optimal control theory. A discrete damping control scheme is developed and applied to a half vehicle model equipped with controlled two setting on/off active dampers in front and rear suspensions. The simulation and measurements give similar results and confirm that the discrete damping control on suspensions suppresses the heave and the pitch motion of the vehicle body obviously and improves the attitude of the vehicle. The control scheme checks unwanted jerk effectively.
基金
国家自然科学基金
关键词
半主动悬架
阻尼控制
汽车
半主动控制
动态响应
semi active suspension, wheelbase preview, discrete optimal control of the damper
