1. 上海交通大学 机械与动力工程学院， 汽车电子国家工程实验室， 上海 200240;2. 山东时风(集团)有限责任公司， 山东 高唐 252800
通讯作者:柴本本(1991-)，男，河南省商水县人，博士生,主要研究方向为电驱动两挡自动变速器集成控制.E-mail： chaibenben2014@sjtu.edu.cn.通信作者：张建武，男，教授，博士生导师，E-mail：jwzhang@sjtu.edu.cn.基金资助:山东省科技重大专项资助项目(2015ZDXX0601C01)Optimal Control Strategy of Two Speed Automatic Mechanical Transmission in Shift Process
CHAI Benben1,WU Shaofang1,ZHANG Jianwu1,LIN Lianhua2,XU Haigang21. National Engineering Laboratory of Automotive Electronic Control Technology, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shandong Shifeng (Group) Company Limited, Gaotang 252800, Shandong, China
摘要/Abstract
摘要： 针对换挡过程不同阶段同步器动力学模型的复杂性和不确定性，提出一种最优控制策略对驱动电机转矩进行反馈补偿和采用非线性时间最优控制对换挡电机进行位置控制，以优化整个换挡过程.试验结果表明：该混合最优控制策略能够消除换挡过程中输出转矩的振荡，明显减少了换挡时间；建立的电驱动传动系与电动换挡执行机构耦合动力学模型能够精确反映电驱动无离合器自动变速器的换挡过程；驱动电机和换挡电机混合优化控制策略可以显著改善换挡品质，为电驱动自动变速器的开发提供参考.
关键词: 电驱动双速自动变速器, 协同控制, 换挡冲击, 最优控制
Abstract: In order to validate the shift strategy of 2-speed automatic mechanical transmissions (2AMT) for electric vehicles, the powertrain test rig including high performance electric dynamometer is built up and experiments under different conditions are made. Then, a compound optimal control strategy is presented to improve the shift performance. In other words, a linear quadratic regulator is employed to actively compensate the drive motor torque and a nonlinear time-optimal control is used to track the actuator rotor position. The experiment results show that this optimal control strategy can not only reduce the driveline vibration, but also cut down period of the shift time. The coupled dynamic model of the driveline and shift actuator is precise enough for the analysis of shift process, and the compound optimal control strategy is effective to improve the shift quality.
Key words: 2-speed automatic mechanical transmissions (2AMT), combined control, shift shock, optimal control
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