Research on the virtual maintenance techniques based on petri-net and EON studio

On the aspect of describing the maintenance process,the current virtual maintenance process modeling is deficient in combining the abstract expression of maintenance task with lower level maintenance motion simulation.Therefore a virtual maintenance simulation system based on Petri-Eon Studio is introduced in it and its framework is proposed as well.The task layer and action layer is combined for maintenance process modeling to set up a multi-layer structure including maintenance task,maintenance process,maintenance step,motion unit and basic posture.Then Petri-net is used to formalize the maintenance process,which is modeled and the motion simulation is realized with Eon Studio.Afterwards the Petri-net model and the Eon Studio simulation program is integrated onto the Visual C++6.0 platform.The analysis result of Petri net model is used to drive the virtual environment for maintenance simulation,which process is controlled.