LCD偏光片貼附機之模糊控制器設計

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Thesis > Item 987654321/35391

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Title:	LCD偏光片貼附機之模糊控制器設計
Other Titles:	Fuzzy controller design of the LCD polarized-film attaching machine
Authors:	陸龍綿;Lu, Long-mian
Contributors:	淡江大學機械與機電工程學系碩士班楊智旭;Yang, Jr-syu
Keywords:	液晶顯示器;視覺感測器(CCD);模糊控制器;LCD;CCD camera;Fuzzy controller
Date:	2005
Issue Date:	2010-01-11 06:28:24 (UTC+8)
Abstract:	本研究的目的是設計偏光片貼附機在更換LCD尺寸的自動對位與誤差補償之模糊控制器，研究中，以CCD攝影機擷取液晶玻璃貼片範圍影像的位置誤差量，及位置誤差變化量，作為模糊控制器的輸入，依據貼片對位的經驗來建立模糊歸屬函數，透過模糊規則庫的選擇，利用模糊控制法則，來計算偏光片貼附機中液晶承載平台自動定位所需移動的位移量或微步進馬達之旋轉步數，以此移動步數作為模糊控制器的輸出，再以機器視覺技術作為回授，藉著模糊控制器的判斷與分析，快速且正確地對位及自動貼片。應用此模糊控制理論的液晶玻璃偏光片貼附機，使得更換LCD尺寸時的校正定位過程，從原本需要花費一小時縮短到只要十分鐘的時間，確實提升了生產效率，對於操作的工程人員提供了更精準及方便的定位方式，使用CCD攝影機做影像擷取與處理，對於誤差量的測量數據，就能建立一個可供依循的資料庫，不但無需操作人員的目視檢測，也不需要在更換不同尺寸的液晶玻璃時做定位平台的人工調整，將產能與良率都大大的提升。 The objective of this research is to design a fuzzy controller for the LCD polarized-film attaching machine. The LCD image is captured by a CCD camera in the experiment. The input variables of this fuzzy controller are the position error and the change rate of position error. The membership function is determined by the experience of the well trained operator. Then, the fuzzy rule database is developed by the membership function. The output variable is the rotating steps of stepping motor. It is a closed-loop control system. The feedback unit of this control system is a machine vision subsystem. From the experimental result, the alignment time is reduced from an hour to 10 minutes by this developed machine. It also shows that this machine works very well at both the production efficiency and the yield rate.
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Thesis

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