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两轮独立驱动电动汽车的驱动力控制策略研究
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摘要
本文针对两轮独立前驱电动汽车,设计了集成电子差速控制和转矩协调控制的驱动力综合控制策略,根据不同工况优化驱动力分配来提高车辆动力学性能。低速转向时实施基于Ackerman转向模型的电子差速控制,高速转向时实施包含决策层和分配层的转矩协调控制。通过CarSim-Simulink联合仿真验证了驱动力综合控制策略的有效性,仿真结果表明设计的控制策略在车辆高速移线行驶时也能有效提高车辆的行驶稳定性。
This paper proposes a driving force integrated control strategy including the electric differential control and the torque coordination control for two-wheel-independent-drive electric vehicles.This integrated control strategy can enhance vehicle dynamics performance by optimizing the driving force distribution according to different driving conditions.The electric differential control based on Ackerman steering model is implemented at low speed steering,and the torque coordination control is implemented at high speed steering, which consists of driving force decision and distribution layers.The effectiveness of driving force integrated control strategy is verified by CarSim-Simulink co-simulation.The simulation results show that the designed driving force integrated control strategy also can effectively enhance the vehicle driving stability under high speed lane-change.
引文
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