一种基于时变内模的PMSM-EPS助力纹波抑制方法

来源 :第19届亚太汽车工程年会暨2017中国汽车工程学会年会 | 被引量 : 0次 | 上传用户:saosaoxp
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本文研究了汽车EPS系统的助力纹波问题,提出一种基于时变内模控制的助力纹波抑制方法.抑制助力纹波的意义在于提高EPS系统性能、改善驾驶人手感.功率开关器件死区、管压降和电动机齿槽转矩会造成PMSM转矩脉动.该扰动信号本质上是基于转角周期变化的,但当转向盘转速变化时,对时间却是非周期性变化的.本文讨论了将EPS助力纹波问题与基于转角变化系统的跟踪控制问题相联系的方法.文中使用一种时变内模控制器设计来控制PMSM,并使用增益规划设计来镇定所得增广系统.仿真和试验结果验证了算法的有效性.
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