基于补偿滑模控制的混合动力汽车协调控制*

doi:10.19562/j.chinasae.qcgc.2020.04.003

摘要/Abstract

摘要： 由于行星排功率分流式混合动力汽车的结构优势,双行星排功率分流式混合动力汽车已经成为各机构的研究重点。由纯电动模式到混合驱动模式切换的过程中存在发动机起动和发动机转矩引入,而发动机转矩瞬态响应存在迟滞,导致切换过程中动力系统的输出转矩会有较大波动。为减小波动,降低模式切换过程中的动态冲击度,本文中提出补偿滑模控制方法,对双行星排功率分流式混合动力汽车模式切换进行协调控制。首先,建立整车动力学模型,对切换过程每个模式进行分析;之后,针对发动机拖转阶段和混合驱动阶段分别采用补偿控制和基于固定边界层的自适应滑模控制,并对滑模控制进行稳定性分析;最后,结合Matlab/Simulink软件平台进行仿真验证。仿真结果表明,补偿滑模协调控制策略能够有效地减小从纯电动到混合驱动模式切换过程中的转矩波动和冲击度。

关键词: 功率分流式混合动力, 模式切换, 协调控制, 转矩补偿, 滑模控制

Abstract: Considering the structural advantages of the hybrid electric car with planetary-gear-based compound power split system, the hybrid electric car with double-planetary-gear-based compound power split system has become the focus of research of various institutions. The process of switching from electric mode to hybrid drive mode involves the starting of the engine and the intervention of the engine torque. Due to the hysteresis of the torque transient response of the engine, there will be large fluctuation of the output torque of the power system during the switching process. In this paper, to reduce the fluctuation and the dynamic impact in the process of mode switching, a compensation sliding mode control method is proposed for the coordinated control of the hybrid electric car with double-planetary-gear-based compound power split system. Firstly, a dynamics model for the vehicle is built to analyze each mode of the switching process. Then, for the engine drag phase and the hybrid drive phase, the compensation control and the adaptive sliding mode control based on fixed boundary layer are used respectively, and the stability of sliding mode control is analyzed. Finally, the verification simulation is conducted on Matlab / Simulink software platform. The simulation results show that the compensation sliding mode coordinated control strategy can effectively reduce the torque fluctuation and impact in the process of switching from electric mode to hybrid drive mode

Key words: power-split hybrid electric car, mode switching, coordinated control, torque compensation, sliding mode control

蔡英凤, 窦磊, 陈龙, 施德华, 汪少华, 朱镇. 基于补偿滑模控制的混合动力汽车协调控制^*[J]. 汽车工程, 2020, 42(4): 431-438.

Cai Yingfeng, Dou Lei, Chen Long, Shi Dehua, Wang Shaohua, Zhu Zhen. Research on Coordinated Control of Hybrid Electric VehicleBased on Compensation Sliding Mode Control[J]. Automotive Engineering, 2020, 42(4): 431-438.

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基于补偿滑模控制的混合动力汽车协调控制^*

Research on Coordinated Control of Hybrid Electric VehicleBased on Compensation Sliding Mode Control

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