針對傳統控制中存在的自動化程度低的問題，開發研制了基于PLC的PID控制算法的物料定量給料系統計量裝置，闡述了該控制系統的結構及PLC的硬件組成;根據工藝過程的技術要求，從控制系統的硬件配置到應用程序的設計，系統地考慮了工業物料定量給料過程的實際情況。應用結果表明該系統性能穩定、運行可靠、人機界面直觀靈活，控制系統實現的各項功能均滿足工藝要求，取得了良好的應用效果。
關鍵詞:配料系統計量裝置可編程控制器變頻
中圖分類號:TP29 文獻標識碼:A
Abstract; In order to overcome the problem of low level of automation in traditional control, the metering device of quantitative material feeding
system is developed based on PLC and PID control algorithm. The system structure and configuration of PLC are described. In accordance with the
technical requirement of technique process, the practical conditions in industrial material feeding are considered systematicaly for both hardware
and application program in control system. The results of operation proved that the system is stable, reliable, with flexible and directly perceived
man-machine interface. Various functions implemented the system meet technique requirements. Excellent efects of application are obtained.
Keywords;D ispensings ystem Measuringd evice PLC Variable frequenc