步进电机的MATLAB仿真程序，采用了卡尔曼滤波，对定子电流进行估计，并估算出转子的位置和速度-Continuous time extended Kalman filter simulation for two-phase step motor，Estimate the stator currents, and the rotor position and velocity, on the basis of noisy measurements of the stator currents.

无数直流电机无位置传感器速度控制。利用电机运行时产生的反电动势估算转子位置。(Sensorless speed control of numerous DC motors.The rotor position is estimated by the back electromotive force generated during the motor operation.)