Integrating application and research technology of DCS and frequency inverter, realize switchover without interference between control valve and frequency-inverter motor in producing process control.

经过DCS与变频控制技术的结合应用与研究，实现了生产过程控制中调频电机与调节阀的无扰动切换。

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This article introduces the form of no-interference switch systems of inverter and its application in Cangzhou oil refinery. and the effect of this system.

介绍了变频器无扰切换系统的构成和在沧州炼油厂的应用，以及该系统的应用效果。

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