Internal Model Control with a Grey Predictor

[[abstract]]In this paper, we propose a self-tuning controller with a grey predictor for on-line process controls. The self-tuning mechanism is designed basing on a group of input-output data obtained from the process. The grey predictor in the tuning mechanism is utilized to reduce the random variation of the input-output data. The self-tuning mechanism is integrated into an internal model control, and the developed control system is applied to control the temperature distribution in a thermal barrel of plastic molding processes. From the experimental result, we conclude that the usage of the grey predictor can filter out the noise in the process and reduce the number of input-output data required in the tuning mechanism.[[sponsorship]]雲林科技大學水土資源及防災科技研究中心[[conferencetype]]國內[[conferencedate]]20011025~20011026[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]雲林縣, 臺

塑膠加熱料管溫度建模與狀態迴授控制

[[abstract]]本文建立塑膠加熱料管中流體溫度分佈的線性離散模式，並依此模式設計狀態迴授控制器，用以控制料管的溫度分佈。推導線性動態方程式後，根據輸出入資料以遞迴最小平方誤差法求算系統方程式的係數。我們也使用內部模式控制驗證所建立的線性模式，以確定模式的正確性。系統的狀態迴授控制器係根據推導的線性動態模式進行設計，最後整合的系統應用於塑膠押出與射出生產程序的加熱料管溫度控制。[[abstract]]In this paper, we derive a linear discrete thermal model for a thermalbarrel in plastic molding processes. A state-feedback controller isdesigned basing on the derived model, and is utilized to control thetemperature distribution in the barrel. The coefficients of the lineardiscrete model are identified by using the Recursive Least-SquareError Method. We utilize an internal model control to verify theconstructed model. The integrated control system is applied to controlthe temperature distribution in a thermal barrel of a plastic moldingmachine.[[sponsorship]]成功大學工學院; 成功大學工程科學系; 中華民國自動控制學會[[conferencetype]]國內[[conferencedate]]20020315~20020316[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]臺南, 臺