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http://ir.hust.edu.tw/dspace/handle/310993100/1756
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| 題名: | 在非線性與參數不確定下全電式射出成型機射出速度的強健控制研究 |
| 作者: | 趙時勉 |
| 貢獻者: | 修平技術學院電機工程系 |
| 關鍵詞: | 全電式射出成型機;H-∞控制;單晶片控制器;Electric Drive Injection Molding Machine;H-∞ control;DSP controller |
| 日期: | 2005-10-20
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| 上傳時間: | 2009-10-28T03:50:04Z
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| 摘要: | 近年來，由於環保意識抬頭，促使塑膠射出成型機的發展由傳統油壓式漸漸的向省能源化之全電式射出成型機種轉移。在產業界，目前國內外生產全電式射出機的廠商已有相當成功的進展。但在學術上的研究，由射出成型機的動態模式與控制系統研究文獻中，所知的幾乎都在油壓驅動的領域中。為了確實瞭解與提供進一步發展全電氣式射出機之重要知識，實有必要加以深入探討。在影響射出成形機性能的主要參數中，射出速度是相當重要的製程參數。不同於傳統油壓式射出機所使用的油壓致動器來控制射出速度，全電式射出機之主要致動元件是交流同步伺服馬達，並具有將馬達旋轉運動轉換成直線運動的傳動機構。雖然交流同步伺服馬達驅動之射出系統的線性化動態模式（包含時規皮帶，滾珠導螺桿，齒輪等元件），可經由數學加以推導後獲得，再以此一參考模式進行開迴路之系統判別已確定動態模式之參數，並依此進行控制系統的設計。然而，因外在負載變化、溫度變化及不確定因素之干擾，線性化動態模式內之參數變化與模式之不確定性將影響控制系統之性能。為了使伺服系統在動態模式有不確定性存在之情況下，仍然能保有良好的操作性能，伺服控制系統必須具有強健性。因此本計劃將以實測之數據對伺服系統之不確定性作定量之分析，根據分析結果以及系統之規格要求選取適當之權重函數，並應用H-∞控制理論及分析方法設計強健性控制器。為了完成上述構思的驗證，本計劃將以TI 生產之TMS320LF2407 控制晶片，來實現交流同步伺服馬達驅動之強健性控制器。;In recent years, as the increasing needs for environmental protections,the development of Injection Molding Machine (IMM) has transferred fromconventional Hydraulic drive to Electric drive. Although the development ofthe Electric Drive IMM have achieved a great enhancement by manycompanies in the last decade, the study of the dynamic model and controlfor the Electric Drive IMM is very few compare to the Hydraulic DriveIMM. Thus, it is necessary to study deeply to understand the relationshipbetween the machine and controlled variables and to provide sufficientknowledge in future development for the Electric Drive IMM.Therefore, this project deals with the control problems of the injectionvelocity, one of the important processing variables during injection molding.Compare to the hydraulically actuated velocity control, the Electric DriveIMM uses AC servo motor with necessary gears、belts、bearing and ballscrew assembly to implement the control. Although the linearized dynamicmodel can derive mathematically and identify its parameters experimentallyfor controller design purpose, the variation of parameters and the modeluncertainties due to load change 、temperature effect and unmodeleddynamics affect controller performance.To keep the servo system has required performance under the influenceof uncertainties, the controller must have robustness. The controller designin this project then first consider analyzing the uncertainties of the servosystem by actual testing. The results and the requird performancespecification are then utlizing to choose proper weighting functions toproceed H-∞ control design. To implement the designed controller, aTMS320F2407 EVM and necessary peripheral electronic circuits areselected. To verify the feasibility of the proposed study, a prototype will beconstructed.;計畫編號:NSC93-2212-E164-004;研究期間:200408~200507 |
| 顯示於類別: | [電機工程系(含碩士班)] 研究計畫
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| NSC93-2212-E164-004.pdf | | 10Kb | Adobe PDF | 1384 | 檢視/開啟 |
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