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A design method for the gearshift strategy in powertrain systems is proposed to explore the energy saving potential of an electric vehicle (EV) equipped with a multispeed automated manual transmission (AMT). The optimal gearshift schedule is obtained by solving a nonlinear time-varying optimal problem in the framework of model predictive control, wherein, the vehicle driveability, represented by the...
Wheel skidding or spinning is dangerous for driving vehicles, and compared to conventional vehicles, electric vehicles are more easily to slip during driving on slippery road. In this paper, a novel traction control method based on wheel-slip control is proposed to improve the safety and stability of electric vehicles. Considering the high nonlinearity and uncertainties of the traction system, this...
In order to prevent the electric vehicle wheels from spinning out on low-friction coefficient [low-μ] roads, the electric vehicle traction control system (TCS) based on active disturbance rejection control (ADRC) is carried out in this paper. Firstly, we set an optimal longitudinal slip ratio as the control target, and consider the motor current and load torque as internal and external disturbance,...
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