針對多循環交變濕熱的溫濕度控制，本文介紹了一種交變濕熱控制的新方法，該方法把模糊控制和常規PID 控制結合起來，采用雙模態分段控制和補償解耦設計出溫濕度控制系統，并在西門子S7-300系列PLC 上加以實現。通過應用可知，該方法對多變量、強耦合、大慣性對象的控制是非常有效的，具有超調小，調節迅速和上升時間短特點，具有很好的魯棒性。
關鍵詞：模糊控制；PID 控制；補償解耦；PLC
Abstract: According to the control of the temperature and humidity multi-variable system, this paper presents a new method to control temperature and humidity. The method combines fuzzy control technology with PID algorithm and applies the two-model control method and fuzzy discoupling to design a control system of temperature and humidity and PLC S7-300 is used as the control platform. Application result shows that the control system is effect in controlling the plant with multi-variable, highly-coup ling, long-dead-time and has ideal
characteristics of small overshoot, fast regulation and short climbing time, and good robustness.
Key words: fuzzy control; PID control; compensate discoupling