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基于H∞混合灵敏度控制的EPS操纵稳定性研究

Keywords: 电动助力转向(EPS)系统,路感,操纵稳定性,H∞混合灵敏度控制

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Abstract:

针对电动助力转向系统存在的传感器噪声、路面干扰、参数摄动等不确定性,以及转向系统的多控制目标要求,设计了一种基于H∞混合灵敏度控制方法的EPS系统电流控制器.建立了能够体现装配EPS系统汽车助力特性和整车操纵稳定性能的综合模型,从而使评价EPS汽车综合操纵性能的指标更加全面和符合实际.仿真与分析结果表明,所设计的控制器不仅能够保证满意的路感、良好的操纵稳定性能,而且可以有效抑制传感器噪声和路面干扰的影响,从而提高了系统的性能鲁棒性和稳定鲁棒性.

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