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基于GA-LQR两挡DCT离合器目标转矩控制
Authors
姚炼红
张志刚
郑艳杰
陈金晶
Publication date
1 January 2020
Publisher
Editorial Office of Journal of Mechanical Transmission
Doi
Cite
Abstract
为获得更舒适的换挡品质,针对搭载有两挡双离合变速器(DCT)的电动汽车,对其换挡过程中两组离合器目标转矩进行协调控制。以冲击度与比滑摩功作为评价指标,并以冲击度与滑摩功为二次型目标泛函,采用线性二次型最优控制(LQR)方法确定换挡过程转矩相的离合器目标转矩。采用遗传算法(GA)的全局搜索能力对LQR中的加权矩阵进行最优选取,得到换挡品质更优的离合器目标转矩。最后,对当前采用定斜率计算确定的离合器目标转矩与采用所提方法确定的离合器目标转矩进行对比,结果表明,后者在换挡过程中所用的时间较少,产生的冲击度和比滑摩功都有所减小,有效提升了两挡DCT的换挡品质
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Last time updated on 06/04/2023