因此，使用无位置传感器技术既可以更好地发挥SRM在极端环境下的性能，同时也可以减少成本和整个系统的体积。
The sensorless control of SRM could promote its performance under bad circumstance, and reduce the cost and entire volume.
本课题基于无位置传感器技术，对应用于空调压缩机的无刷直流电动机系统做了一定的理论分析并进行了设计与实验测试。
Based on sensorless technology, the thesis has done some analysis theoretically and designed and tested the system of BLDCM used on air-conditioning compressor.
研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。
The software phase-locked loop (SPLL) technology in the steady speed control of permanent magnet brushless DC motor (BLDCM) in gyro was discussed.
然后分析研究无位置传感器无刷直流电机控制系统的几项关键技术：转子位置检测、启动和PWM控制技术等。
And then it studies a number of key technologies around the sensor less brushless DC motor control system: Rotor position detection, motor starting and the PWM control technology.
因此，研究无刷直流电机无位置传感器控制技术具有重要理论和实用价值。
Therefore, it has important theoretical and practical value to study position sensorless control methods for BLDCM.
因此，研究无刷直流电机无位置传感器控制技术具有重要理论和实用价值。
Therefore, it has important theoretical and practical value to study position sensorless control methods for BLDCM.
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