This article introduced emphatically the control strategy, position detection and identification, drive technique as well as main circuit of permanent magnet Ac servo system.

重点介绍了永磁交流伺服系统的控制策略，位置检测和辨识、主电路和驱动技术等关键技术。

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SVC(TND)SERIES single phase high precision full automatic ac voltage regulator composable of contact auto voltage regulator, servo motor automatic control circuit etc.

系列单相高精度全自动交流稳压器，由接触式自耦调压伺服式电动机、自动控制电路等组成。

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Auxiliary signal generator (AC) is a part of many control circuit of ion trap mass spectrograph.

辅助信号发生器(简称ac)就是离子阱质谱众多控制电路中的一部分。

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