国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

The control of Hoisting machine needs the mechanical angle of the rotor, but the incremental encoder usually cannot provide accurate location information before its clear signal comes. So, the initial position detection of the rotor becomes a problem that must be solved in the control of the traction machine. The traditional method is complicated and the rotor locked or perturbed during the positioning process, which is not conducive to improving the comfort of the elevator system. To deal with this problem, a positioning method of initial rotor position based on the commutation signal of sinusoidal incremental encoder is presented. What's more, Signal conditioning circuitry and software filtering algorithm are developed in this paper. By sampling the two commutation signals, the initial position of the rotor can be obtained with high accuracy. During the process of positioning, the rotor remains stationary, and the detection accuracy meets the requirements of the motor smooth starting. The experimental results show that the detection method does not rely on the mathematical model of the motor, and has high universality.