Modeling the process of failure diagnosis in virtual maintainances system based on CPN

Allusion on the process of failure diagnosis in virtual maintainances system is complex, and the element is excessive, this paper model the process of failure diagnosis of hydraulic system based on colored Petri net, validates correctness of the model, analyzes it, confirms corresponding tools and equipment in the process of virtual maintainances system, and design scheme of the process of virtual maintainances system, Finally, the result is utilized to the virtual maintainances system.