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。
The AC position servo systems are extensively used in the industrial control systems.
交流位置伺服系统广泛应用于工业控制系统中。
The experimental results show that the circuit designed is simple and reliable, the position signals measured match the requirements of the AC drive control system with high performance.
试验结果表明，该电路简单可靠，所测得的位置信号完全满足高性能交流传动控制系统的要求。
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