CAJ | 학술논문

为有效控制步进电机的运行，根据H无穷鲁棒滤波理论，设计了基于扩展H无穷滤波的步进电机状态观测器，并建立数学模型，将定子电流、转子转速和位置作为状态变量。通过测量定子侧的电流值和电压值，利用扩展H无穷滤波器对电机转子的状态做出最小方差估计。仿真结果表明，扩展H无穷滤波估算转子转速和位置信息是可行的，且扩展H无穷滤波精度和稳定性都优于扩展卡尔曼滤波。
위유효공제보진전궤적운행，근거H무궁로봉려파이론，설계료기우확전H무궁려파적보진전궤상태관측기，병건립수학모형，장정자전류、전자전속화위치작위상태변량。통과측량정자측적전류치화전압치，이용확전H무궁려파기대전궤전자적상태주출최소방차고계。방진결과표명，확전H무궁려파고산전자전속화위치신식시가행적，차확전H무궁려파정도화은정성도우우확전잡이만려파。
In order to control the operation of step motor effectively, the state observer of step motor was designed based on H∞robust iflter theory. The mathematical model of step motor was established and the stator current, rotor speed and rotor position were regarded as state vector. The H∞iflter can get the minimum variance estimation of rotor state by measuring stator current and voltage, and lay the foundation for the sen-sorless motor control. The experimental results show that the H∞iflter can estimate rotor velocity and position, and ifltering accuracy and stability are better than extended Kalman ifltering.