汽车主动悬架Gain-Scheduling H_∞控制

Gain-Scheduling H_∞ control of active suspension

当汽车悬架的某些参数在较大的范围内变化时,仅通过一个鲁棒控制器有时难以获得令人满意的性能.随着电子技术和传感技术的发展,很多参数的实时测量已成为可能.本文基于LMI优化方法,根据参数变化范围设计多个H∞控制器,并根据实时测得的参数通过内插进行平滑切换,以协调相互冲突的诸性能要求,获得汽车系统的最佳总体性能和在多变的不确定的环境中行驶的鲁棒性.

In general, it is beyond possibility to acquire high performance by only one robust controller when some parameters of active suspension change in a wide span. With the development of technique of electrics and sensor, it becomes possible to measuring the parameters in real time. Based on LMI optimum method, this paper designs multi H∞ controller and switches smoothly by interpolation with the measured parameters in real time to acquire the best wholly performance and robustness in uncertain environment and to compromise the conflicted requirements.