本恒溫控制系統精度要求高，且由半導體制冷器件構成的溫控系統具有非線性、大慣
性及數學模型難建立等特性，這使得常規PID 控制器無法很好地滿足系統要求，因此本文設計了一種新型模糊PID 參數自整定控制器，該控制器能夠發揮模糊控制魯棒性強、動態響應好、上升時間快、超調小的特點，又具有PID 控制器的動態跟蹤品質和穩態精度，具有很好的實時性，并在實際使用中取得良好的控制效果。
關鍵詞：恒溫控制系統；模糊PID 算法；半導體制冷

Abstract: The system accuracy of the constant temperature control has high request, and temperature control system constituted of semiconductor refrigeration has nonlinear, big delay and difficult establishment characteristic of mathematics model, etc. Normal PID controller cannot satisfy system require perfectly, so a new self-adaptive fuzzy PID controller is introduced in this paper. This method can exert fuzzy control characteristics such as high robustness, good dynamic response, short rising time, small surplus, it possesses the dynamic track quality and steady precision of PID controller and good real-time processing. This controller is taken into implication in practice and gets preferable control effect.
Key Words: constant temperature system, fuzzy PID, semiconductor refrigeration