The system is based on frequency conversion velometer and PLC. This paper analyses the construct of the system, and introduces the working theory of position and graphic sensors.
本文依托于变频调速器和可编程逻辑控制器（PLC）技术，可以有效的把智能控制方法应用于控制现场。
The system is based on frequency conversion velometer and PLC. This paper analyses the construct of the system, and introduces the working theory of position and graphic sensors.
本文依托于变频调速器和可编程逻辑控制器（PLC）技术，可以有效的把智能控制方法应用于控制现场。
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