利用虛體製造裝置作彈性輸送機的多遠端控制

Abstract

本研究以製造執行系統作為現場監控系統的架構，使用架構轉換法配合區 段資源的概念，實作輸送機監控系統。製造執行系統中的監控器控制虛體 製造系統，虛體製造系統透過網路與實體製造系統相連，達成遠端控制的 目的。監控器的設計是將輸送機劃分成區段資源後，每個輸送機區段都以 架構轉換法配合區段資源的概念加以分析、設計、驗證、實作。在功能需 求的分析階段以物訊圖來分析各區段資源的物流，形成功能架構；在設計 階段則配合區段資源的概念，以物訊圖來設計控制資訊流，形成控制架構 ；於驗證階段以裴氏圖將控制架構轉換為動態架構，觀察輸送機系統各區 段資源的動態行為，並驗證配合區段資源的控制架構並沒有產生鎖死的現 象，然後以不變量分析萃取物件；最後於實作階段，將萃取後的物件形成 即時型專家系統G2的物件，並將動態架構轉為命令架構，形成知識庫的法 則。本文以國立交通大學生產自動化中心的輸送機為例，說明如何系統化 的實作輸送機現場監控系統。 Based on Hierachy Transformation Method（HTM）, a supervisor on Manufacturing Execution System（MES） architecture is designed and implemented for a flexible conveyor system. In this architecture, the supervisor gives commands to a Virtual Manufacturing System（VMS）which maps onto a Physical Manufacturing System（PMS）via communication network for multi- user remote control. The supervisor is designed through the concept of segment resources. The intended behavior of each conveyor segment is analyzed, designed, verified, and implemented as four stages. At functional requirement stage, the material flows through each conveyor segment are specified. At designed stage, the information flows are designed to control material flows. At verification stage, the liveness of the controlled conveyor is verified by transformed Petri net models. At implementation stage, the verified Petri net models are transformed into sets of rules for real time control. Also the implementation of supervisors for the conveyor system at Production Automation Center, NCTU,successfully demonstrates the concept of segment resources, supervisor design for MES, and remote manufacturing control.