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主动悬架H∞/广义H2静态输出反馈控制方法

, PP. 122-126

Keywords: 汽车工程,主动悬架,差分进化算法,多目标控制,静态输出反馈,H∞/广义H2

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Abstract:

?在多目标控制框架下,提出了一种主动悬架H∞/广义H2静态输出反馈控制方法。选用H∞范数作为乘坐舒适性能的指标,利用广义H2范数来描述悬架系统时域约束要求。为求解静态输出反馈增益,采用差分进化算法(DEA)和线性矩阵不等式(LMI)相结合的算法,即用DEA来得到控制器的样本,并在满足广义H2约束的条件下,用LMI方法最小化系统的H∞性能指标。以悬架行程作为反馈信号,对四自由度半车主动悬架系统进行了频域分析和时域仿真。结果表明:静态输出反馈控制方法能使悬架性能得到明显改善。

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