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題名 | The Effects of Error Correction Terms of the Discrete-Time Self-Tuning Controller on the Time-Varying System=間時自調控制器使用誤差校正項對時變系統的效應 |
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作者姓名(中文) | 江昇修; 周有禮; | 書刊名 | 中國機械工程學刊 |
卷期 | 20:6 1999.12[民88.12] |
頁次 | 頁607-615 |
分類號 | 448.942 |
關鍵詞 | 間時自調控制器; 誤差校正項; 時變系統; Adaptive control; Self-tuning control; Error correction terms; |
語文 | 英文(English) |
中文摘要 | 雖然傳統控制理論已經非常廣泛的應用在工業和工程上,但是系統的效率可能因為一些未知的干擾、模型和環境的不確定性或者不可預測的時變特性而降低。適應控制方法曾經被用來處理這些不確定性,並且在某些假設下,得以確保系統的穩定性。因為在設計過程中需要解一些複雜的非線性方程式,因此實行適應控制是有困難的地方。此篇文章提出一種時間分離且時變的自我調適控制方法。一般來說自我調適的構造是使用系統確認法以及和控制方程式有關的系統參數,所提出的自我調適法使用此構造,但為了補償時變的效應,加上另外的誤差校正項,因此新的控制方法並不需要假設系統是隨時間慢慢的變化。新的方法可應用在連續系統的參數是隨時間變化或不隨時間變化的情況。 |
英文摘要 | A self-tuning discrete-time, time-varying controller is presented. The algorithm developed here uses a traditional selftuning structure employing a system identifier of system parameters in concert with a control law. However, additional error correction terms are incorporated into the control law to compensate for the time-varying effects. Hence the assumption that the parameters may vary slowly is not necessary for the new algorithm. The method can be applied to time-varying as well as time-invariant structures, and discrete-time as well as continuous-time systems. Under certain assumptions, overall system stability is guaranteed. Implementations may be prohibitive, however, due to the complexity of the set of nonlinear equations to be solved as part of the design process. |
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