- 學位論文
神經網路於超音波鉚合機鉚合特性分析
The Analysis of Welding Property of Ultrasonic Plastic Welding Machine by Neural Network
摘要
由於電子與通訊科技的快速演進，電子產品的保護裝置越來越受到重視，尤其是針對需要被保護，且不可以被使用者拆開的產品，此類的產品甚多，例如；常見於電腦與手機使用的電池組外殼密封、充電變壓器(adaptor)、USB訊號傳輸線接頭等等。為避免產品內部的電子元件與線路遭到人為的破壞或灰塵的堆積，使得產品使用不良現象發生，此類電子產品都會以塑料外殼包覆方式，將電子元件保護起來，除了可隔絕灰塵外，且不易被使用者輕易的打開。 不可諱言，在許多的超音波鉚合作業中，都會有1~3%產品不良率的設定，其原因在於影響鉚合的變數除了上、下殼塑料的品質外，諸如人為錯誤因素、超音波鉚合的焊接能量、氣壓、固化時間、下降速段、振幅大小、延遲時間等等，均會對鉚合品質的好壞，產生決定性的影響。對於產品生產數量龐大的企業而言，即使是1%的不良率，都會為公司帶來一年數千萬元或上億元的損失。 因此，此論文研究之目的，即在於利用智慧型控制技術，對於超音波鉚合機之精密控制進行探討、研究，期望發展出一套超音波鉚合機精密控制機制，針對不同鉚合塑材與製程進行控制程序的最佳化設計，能幫助產業界提升其產品的製作良率及產業的競爭力。
並列摘要
Due to the fast development of electronic and communication technologies, the protection of electronic product has become more and more important and indispensable, especially for the products need to be protected and forbidden to open. In fact, many products such as the battery cases of computer and cell phone, the adaptor and the connector of USB transmission line, all have such necessities. In general, in order to avoid the defective condition caused by man-made or dust, the electronic circuit and component will be covered by plastic case. The plastic case could protect the product and make its function work well. The user can not open the case easily either. In the real ultrasonic plastic welding process, 1%~3% production defective rate will be reasonably considered and set by user. The main reason is that too many possible variables will affect the product’s quality in the manufacturing process. For examples, the property of upper and lower cases, man-made error, welding energy, pressure, hold time, press speed, amplitude, delay time, etc., all possibly influence the welding quality and then have a decisive impact to the product. Thus, for a large amount of products, even 1% defective rate will result in a big loss to the company. Sometimes, the loss could reach to ten millions or a billion dollars per year. Therefore, the research of this thesis aims to employ the intelligent control techniques into the study of precise control for the ultrasonic plastic welding machine. A precise control mechanism for the ultrasonic plastic welding process is expected to be developed. To the cases with various plastic materials, an optimal control design and welding process could be created. Based on such intelligent control mechanism, not only the cost of company can be decreased, but also the competitiveness of business could be increased.