The base speed and maximum speed of traction motor determine the acceleration performance of electric vehicle.
电机基速和最高转速的选择对整车的加速性能起着决定作用。
The ideal power characteristic for traction motor system is put forward from the vehicle driving point with constant torque drive below base speed and constant power drive above base speed.
从整车驱动角度分析提出了电动汽车电机驱动系统的理想动力特性：低于额定转速恒转矩，高于额定转速恒功率。
Motor speed was estimated on line base on Lyapunov's stability theory, and in this the speed sensorless direct torque control emulation system was designed.
基于全阶观测器，采用李亚普诺夫稳定性理论对电机转速进行在线辨识，实现了异步电机无速度传感器直接转矩控制系统。
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