Key Technologies Research on Collaborative Virtual Maintenance of Large-Scale Electromechanical Equipments
Abstract
Aiming at the complexity of large-scale electromechanical equipments and the difficulty of actual equipment training, key technologies of collaborative virtual maintenance of large-scale electromechanical equipments were researched according to complex systems modeling, distributed interactive simulation virtual maintenance and other aspects of advanced technology.
The key technologies can be used in the design and implementation of collaborative virtual maintenance training system of large-scale electromechanical equipments, which can provide the technical support and solution for more immersion, perceivable and informational collaborative virtual maintenance training system.
1. Introduction
Large-scale electromechanical equipments usually use the technology of mechanical, hydraulic, electric and optical system in one form, the system is complex and highly integrated, the working principle and repair operation of the system is more complex. Excessive wear and accidental damage will caused by real equipment training which lead to additional costs, equipment maintenance training and collaborative research will be restricted greatly, so a new advanced simulation technology must be seeked to its development. However, in advanced simulation technology and its applied research, China has been using the method of tracking foreign technology.
Virtual maintenance technology, known as the cutting-edge of the field, is started late in domestic research, and has remained mostly theoretical research in the laboratory level, simulation application development is less. To this end, virtual maintenance technology can be used in the equipment maintenance on teaching and training of large-scale electromechanical equipments though theoretical and technical research around the fields related. Training costs can be reduced, new simulation application based on military development can be explored at the same time, it is with good economic and important military significance.
2. Collaborative Maintenance Task and Process Modeling Based on Simulation Model of Large-scale and Complex Equipments
After the analysis of multi-level hierarchy structure and functional characteristics of each hierarchy of large complex systems, optimized design and reasonable selection were done to temporal and spatial resolution of each sub-system, different resolution model and model between sub-systems interconnection were established, so that the aggregation model of overall system has fine granularity and high points of accuracy.
Meanwhile, according to the static properties, dynamic properties and failure mode, the effectiveness and impact of each major components were analyzed based on different failure mode to identify the decision of its main performance parameters of the physical state and to study its variation, hybrid modeling method were used to create different types of faults simulation model.
Collaborative maintenance task model was established according to maintenance tasks and specific implementation procedures of large-scale and complex equipments, task can be distributed based on operating personnel of different station.
Maintenance operational model was established according to maintenance operational processes and implement steps of each station to the specification and testing of operating personnel.Maintenance expert system and maintenance guidance model were established based on the technical specifications and empirical knowledge of the maintenance operations of large-scale and complex equipments to guide the current operations of maintenance personnel. Collaborative virtual maintenance process is shown in Fig.1:
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| Fig. 1. Collaborative virtual maintenance process |
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