基于参考模型的复合功率分流系统模式切换中的转矩协调控制*

doi:10.19562/j.chinasae.qcgc.2018.010.002

Abstract

Abstract: Aiming at the problem of poor ride comfort in a compound power-split hybrid system with double-row planetary gear sets during switching between pure electric and e-CVT modes, a torque coordinated control strategy is proposed. A system dynamics analysis is conducted and a dynamics model for mode switching is established. The strategies of torque assignment and jerk compensation control are devised based on reference model, the torques of different power sources in different stages are dynamically assigned, and the changing rate of motor torque is adjusted according to the target of ride comfort to compensate the torque fluctuation of hybrid system. The results of simulation and bench test show that the strategy proposed can meet the requirements of the power performance and startability of vehicle in mode switching process with the jerk being lowered to below 15.5m/s³, meeting the requirements of national standard

Key words: power-split, mode switching, coordinated control, reference model

Zhao Zhiguo, Jiang Lanxing, Li Mengna, Wang Maoyao. Torque Coordinated Control During Mode Switching of a Compound Power-Split Hybrid System Based on Reference Model[J]., 2018, 40(10): 1132-1138.

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Torque Coordinated Control During Mode Switching of a Compound Power-Split Hybrid System Based on Reference Model

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