• 作者： Huang, Hsiao-Ping; Jiang, Chung-Tarng
• 中文摘要： 本文針對多變數系統存在有時間遲延及負荷干擾的情形下,提出一個改良式的史密斯預測器。理論上,史密斯預測控制系統,可以相當於一個回饋控制系統。然而,此一回饋系統在伺服問題或負荷排除問題上,卻無法兼顧。改良式的史密斯預測控制系統即在於提供另外一個自由度來處理負荷排除。使用所提之改良式預測系統後,得以較原有之史密斯預測控制系統獲至較佳之性能,另外本文所提之改良式系統具有在高頻範圍時不會改變原先史密斯預測控制系統所設定之韌性要求,而這正是一般預測控制系統所遭遇之瓶頸。
• 英文摘要： In this paper, a modified Smith predictor (MSP) is proposed for the control of multivariable processes in the presence of dead times and unknown disturbance. The Smith predictor (SP) control system, such as the generalized multi-delay compensator (GMDC), is a vehicle to perform an inversely based internal model control (IMC) system. Theoretically, a SP system is equivalent to a unity feedback system. However, such a unity feedback system has its limits in handling both servo-tracking and disturbance rejection problems. The MSP system presented here provides a second degree of freedom in design to enhance disturbance rejection of the system. By employing the MSP, it is found that improvement in performance over the original feedback system is possible. There may exist various designs for the MSP, but the MSP system presented here is characterized by dispensing with the need for altering the robustness conditions of the original feedback system at high frequency, a feature that is usually not achieveable by the predictors available so far.
• 中文關鍵字： 時延補償器; 多輸入多輸出; 改良式史密斯預測器; 負荷排除; 多迴路
• 英文關鍵字： Dead Time Compensator; Multi-Input Multi-Output; Mimo; Modified Smith Predictor; Disturbance Rejection; Multi-Loop