A Three-Level Color Petri Net to Support the Construction of Desktop VR-based Maintenance Training System

• Main Authors: Pei-Hsiu Hsieh, 謝沛修
• Other Authors: 孫天龍
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/12612667314718666652

碩士 === 元智大學 === 工業工程與管理學系 === 97 === Maintenance training is an important support activity in product life cycle. Good training could improve the life of products and reduce the operating cost. In recent years, with the development of virtual reality (VR), many scholars has already using the VR technology to developing VR-based maintenance training. According to the interactive level between trainees and objects in the virtual environment, VR-based maintenance training can be divided into Presentation, Guided, Free and Discovery four models. Under Presentation and Guided virtual maintenance training modes, virtual scenarios require only simple interactive programming, like triggering preset animation. However, under Free and Discovery modes, Trainees have to interactively assemble and disassemble objects in the virtual scenarios. Therefore, the virtual scenarios would require prolix and complex interactive programming. To develop VR-based interactive maintenance training system, enabling Trainees to practice the standard maintenance procedure. The interactions between the trainee and the virtual objects must be programmed. Interaction programming, however, is usually extensive and complicated. It includes details such as maintenance procedure monitoring, interactions between virtual objects, synchronized object manipulation with both hands, and the manipulation and interactive details of each individual object. In this paper the interactions are divided into three levels, workflow, coordination, and execution. Using three-level color Petri net to support the construction of desktop VR-based maintenance training system.