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Slip-ratio control of EV is one of the fundamental traction control problems especially for the unknown road condition. In order to regulate the slip-ratio around a constant value, a robust nonlinear control law at the torque level is proposed in this paper. In this control scheme, a nonlinear observation algorithm is designed to estimate the car velocity by using the wheel speed information. And...
This paper addresses the traction control problem for the electrical vehicles (EVs) driven by permanent magnet synchronous motor (PMSM). A robust nonlinear control law at the torque level is proposed firstly to cope with the unknown tyre reaction force. A parameter estimation function will be introduced for the adaptive control of the system with unknown friction forces. Then, a new torque control...
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