关键词: 开关霍尔传感器, 永磁同步电机, 转子位置估算, 矢量控制

Abstract:

An improved technique of position and speed estimation based on Hall sensor was analyzed. In view of the fact that the traditional Hall sensor velocity measurement scheme has different errors in the measurement results at different rotational speeds, the advantages of the two traditional algorithms were summarized. Different speed intervals were used in different sampling periods, effectively balancing the requirements for real-time and sampling accuracy for different motor speeds. Experimental results and theoretical analysis show that, compared with the traditional algorithm, the position and speed estimation techniques were greatly improved both in terms of sampling accuracy and system dynamic performance.

Key words: switch hall sensor, permanent magnet synchronous motor(PMSM), rotor position estimation, vector control