分布式驱动电动汽车转矩分配协调控制研究
投稿时间:2024-04-23  修订日期:2024-04-28  点此下载全文
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作者单位邮编
王淑君 武汉科技大大学 430070
刘华明* 武汉科技大大学 430070
基金项目:湖北省教育厅科学技术研究项目(B2022023)
中文摘要:操纵稳定性和驱动电机工作效率是电动汽车协调控制的重要指标。针对分布式驱动电动汽车,文章提出以直接横摆力矩控制为主的分层控制策略,上层控制器采用滑模控制策略进行目标车速的追踪、滑移率的调整和附加横摆力矩的计算,下层控制器依据滑移率分别设计了前轮独立驱动分配算法和以轮胎利用率最优的分配算法。采用Matlab/Simulink仿真实验对分层控制算法进行验证,结果表明,所提出的滑模控制策略能将质心侧偏角和横摆角速度控制在理想范围之内,下层控制器的两种分配算法提高了驱动电机的工作效率,且车轮滑移率也控制在较低的范围。研究结论可为分布式驱动电动汽车的协调控制提供一定理论依据。
中文关键词:电动汽车  协调控制  滑模控制  经济性  力矩分配
 
Research on Coordinated Control of Torque Distribution for Distributed Drive Electric Vehicles
Abstract:Control stability and drive motor efficiency are important indicators for the coordinated control of electric ve-hicles. For distributed drive electric vehicles, this paper proposes a layered control strategy based on direct yaw moment control. The upper controller adopts a sliding mode control strategy to track the target speed, adjust the slip rate and calculate the additional yaw moment. The lower controller designs the front wheel independ-ent drive allocation algorithm and the optimal tire utilization algorithm respectively according to the slip rate. Matlab/Simulink simulation experiments are used to verify the layered control algorithm. The results show that the proposed sliding mode control strategy can control the lateral deflection Angle and yaw Angle speed within the ideal range, and the two distribution algorithms of the lower controller can improve the working ef-ficiency of the drive motor, and the wheel slip rate is controlled in a lower range. The research results can pro-vide a theoretical basis for the coordinated control of distributed drive electric vehicles.
keywords:electric vehicle  coordination control  sliding mode control  economy  moment distribution
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