汽车悬架系统非线性振动的主动控制

ACTIVE CONTROL FOR NONLINEAR VIBRATION OF AUTOMOTIVE SUSPENSION

首次采用微分几何理论，提出了一种输出一干扰解耦法，对汽车悬架系统的非线性振动的主动控制进行了研究。通过适当的非线性坐标变换，将其简化为线性系统，并对此系统进行最优控制，再通过非线性状态反馈实现对原系统的的主动控制。仿真结果表明，这种针对现有元件非线性特性的方法既符合实际情况又有良好的控制效果。

Output-Output-perturbance uncoupled method educed from differential geometry theory is first used to study and obtain the active coned to nonlinear vibration of an automotive suspension by the authors Of this paper. h is demonstrated that the nonlinear model is transferred to a simple linear system by a proper coordinate transform. The optimal control scheme is applied to the simple system and dries out an active control to the original system through a nonlinear state feedback. The result of a digital emulation indicates that the active coned scheme in allusion to the nonlinear characteristic of the existing elements not only gains an excellent effect but also fit in with the practical condition.