Research on Robust Control for longitudinal Impact of 4 Wheel-Drive Hybrid Electric Vehicle

For a 4WD-Hybrid Electric Vehicle with front wheels driven by engine and rear wheels driven by in-wheel-motor, the engine's intervention in driving and the engagement of the transmission during shifting will cause the longitudinal impact and influence the drive comfort. Attribute to the controllable and quick response of the rear in-wheel-motor's torque, a disturbance rejection H∞ robust controller has been designed to control it and thus to restrain the longitudinal jerk. The simulation results indicate that the controller can effectively control the longitudinal impact caused by the fluctuation of the front wheels’ torque and meanwhile possessed of nice system parameter robustness.