The invention discloses a control system for reducing constant-speed cruising speed fluctuations of an electric automobile, which comprises a whole-automobile controller, an active damping control unit, a proportional integral controller, a motor operation model and a speed encoder. In the control system for reducing the constant-speed cruising speed fluctuations of the electric automobile provided by the invention, the active damping control unit is used to receive actual rotation speed information and calculate compensation information and then transmit the compensation information to the proportional integral controller; and the proportional integral controller is used to calculate a received rotation speed commend and the actual rotation speed information so as to obtain a speed deviation, generate motor torque information after adjusting the speed deviation, calculate the motor torque information and the received compensation information to obtain a motor torque command, and then transmit the motor torque command to the motor operation model. On one side, the proportional integral controller takes the rotation speed deviation as output. On the other side, the active damping control unit will vary according to the different rotation speed deviations, wherein when a rotation speed overshoots obviously, the active damping control unit will adjust the rotation speed so as to reduce fluctuation degree of an automobile speed and enhance comfort.
Control system and method for reducing constant-speed cruising speed fluctuations of electric automobile
2015-11-11
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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