近終形連續鑄軋技術是以轉動的鑄軋輥為結晶器，直接生產薄帶的新技術。而鑄軋輥速度的穩定和精度成為鑄件性能好壞的關鍵。提出了模糊變參數PID控制技術，它是由一個傳統的PID控制外環和一個參數調節內環組成的一種雙環分級式結構，能依據系統工況變化實時調節PID參數，克服系統非線性影響，使系統在每一工況點均處于相對最優。仿真結果表明它與傳統的PID系統相比具有更好的動態品質和系統的穩定性。
關鍵詞：連續鑄軋，PID，模糊控制，變參數
Abstract: Near net thin strip continuous cast rolling is a kind of new technique that use two rotating rolls as the crystallizer and cast the liquid metal between the two rolls to produce strip directly. Fuzzy variable parameter PID controller is a dual ringwith layered structure，which consists of an out-side ring of traditional PID control and an inside ring of parameter governing．It can adjust PID parameter to make it updated accordingto working systems and overcome the effects resulting from the no 1inearity of systems ． It can make the conditions
relatively best ． It is indicated by simulation results that variable parameter PID has better dynamic behaviors and stability of system than traditional PID．
Key Words: continuous cast rolling；PID；fuzzy control；variable parameter