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題名 | 冷熱雙向押出機加溫料管之適應廣義化預估PID溫控器設計與實驗=Design and Implementation of an Adaptive Generalized Predictive PID Temperature Controller for a Plastic Extrusion Heated Barrel |
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作者姓名(中文) | 蔡清池; 呂奇璜; | 書刊名 | 技術學刊 |
卷期 | 13:1 1998.03[民87.03] |
頁次 | 頁167-178 |
分類號 | 448.942 |
關鍵詞 | 預估控制; 適應控制; 自諧調PID控制; 溫度控制; Predictive control; Adaptive control; Self-tuning PID control; Temperature control; |
語文 | 中文(Chinese) |
中文摘要 | 本文旨在研究冷熱雙向加溫料管之適應廣義化預估 PID ( Adaptive Generalized Predictive PID )溫度控制法則設計及其實現製作技術。本溫控器設計策略 是將加溫料管的多段溫度區分別以獨立單變數 PID 控制,而其三項參數則可根據於各段溫 度區的不同動態特性而自動地調整。溫控器的設計程序首先由加溫料管的熱平衡關係來推導 其離散時間的隨機數學模式,經? 遞最小平方法辨識其系統參數,接著應用廣義化預估控制 法則來推導 PID 控制器的參數值,並討論如何調整適合的控制器參數值以改善其追蹤性能 及穩定度強健性,最後提出一整合? 遞最小平方估測法與廣義化預估 PID 控制的即時適應 控制法則。本溫控法則已由電腦模擬確認其可行性,且已以 Microsoft C 撰寫即時溫控程 式並建立實際硬體系統進行實驗以驗證其實用性。 |
英文摘要 | This paper develops methodologies for adaptive generalized predictive PID temperature controller design and implementation for a plastic extrusion heated barrel. The temperature control is exercised by typical PID controllers whose three-term parameters are automatically specified for different dynamics of the temperature zones in the barrel. The design procedure is divided into four steps. Firstly, the stochastic discrete-time mathematical model of the heated barrel is obtained from the energy balance equations on it. Secondly, the unknown system parameters in the model are identified by the recursive least squares estimation method. Thirdly, the self-tuning generalized predictive PID control law is derived based on the minimization of a generalized criterion function. The tracking performance and stability robustness of the control method can be improved by appropriate adjustments of the tuning parameters in the generalized criterion function. Finally, a real-time control algorithm for the heated barrel is proposed, consisting of the methods of recursive least-square estimator and generalized predictive PID control. The algorithm was then implemented using Microsoft C. Computer simulations and experimental results were performed to illustrate the feasibility and effectiveness of the proposed method. |
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