Special Device Virtual Maintenance System Design And Implementation

The thesis was relied on the item of the Special device that developed by the 704 academe of China Shipbuilding Industry Corporation. Through researched the history and current situation of the domestic and abroad virtual maintenance technology, it elucidated the military significance and the content of the Special device virtual maintenance, aimed at the current virtual maintenance deficiency and the existing application demand.Firstly, this thesis defined the principle of building the virtual maintenance scene by using commercial software matured technology. It given the method and steps of the virtual maintenance prototype feature and constraint reconfiguration, and it build the virtual maintenance tools library and virtual maintenance personnel mannequin library on mutual index.Secondly, this thesis given the virtual maintenance unit task decomposition method based on PERT net. Using bottom-up approach and gradual completion of the package, it constructed the whole process of building a virtual maintenance, and it ratiocinated and calculated the maintenance object's degree of freedom, as well as analysis of the geometric constraint. It researched the task unit level maintenance time model and both task unit and system maintenance time, and the maintenance task unit sequence reconfiguration method based on PERT net.Thirdly, through the requirements relationship research between the maintenance management and maintenance simulation, the virtual maintenance simulation information was acquired automatically, and the repository was reused by using the secondary development of DELMIA. Then used the database technology and computer software technology developed virtual terminal maintenance management system in PC. At last for achieving the maintenance crew management and study, it explored the virtual maintenance management system based on PDA, which achieved the maintenance management of the task management, inquiries and process index and repair process information management.Generally speaking, using the virtual reality technology, Achieved the Special device maintenance operations simulation and validate analysis. Analysis and managed the maintenance data of the Special device. It given an immersive virtual maintenance simulation, validate analysis and management software platform for the Special device Designers, the operators and the maintenance staff.