Based on sensorless technology, the thesis has done some analysis theoretically and designed and tested the system of BLDCM used on air-conditioning compressor.

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。

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The speed sensorless vector control of induction motor technology enhances the reliability of AC driving system, and reduces the realization cost.

异步电机无速度传感器矢量控制技术提高了交流传动系统的可靠性，降低了系统的实现成本。

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And finally, the compound control method is considered to be the development trend of full speed sensorless control technology.

最后指出复合控制方法是实现全速范围无传感器控制技术的发展趋势。

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