The Research And Implementation Of The Contact Net Intelligent CAD System

Towards scarcity of domestic Contact Net Design(CND) tools, this paper researches and designs a Contact Net Intelligent CAD System (CNICADS). The system, which bases on the contact net design's rules, realizes iterative design method by object-oriented contact net elements. The implementation constructs a Contact Net Intelligent CAD System can assist designer to complete contact net design exactly and quickly and automatically complete report forms which used to construct and quote. This CAD System is important to improve contact net design's efficiency.First, this paper briefly reviews the history of electric train and contact net, analyses the current application states of CAD systems about contact net design, points out the defects of these CAD systems, clarifies the importance of the intelligent research in CAD systems. Discuss the research results, relative theories and the design CAD systems in current enterprise applications. Point out the intelligence requirement of CAD systems and problems must be solved.Second, according to the domestic requirements of CAD systems, combing the actual enterprise application, construct a general intelligent CAD system. Present the system architecture. Determine the functions of each system module.Third, bases on the object-oriented contact net design's elements and analyze characters about contact net design, realizes the iterative contact net design. Discuss its importance in intelligent CAD system, analyses some mechanism about the technology, give out the implementation, and evaluate the technical feasibility. Towards the intelligence requirement, introduce intelligent technology and analyses the intelligence implementation.Last, for practice, according to the actual enterprise circumstance, point out the defects of the new system and the relative solution, bring forward some expectations about contact net design CAD System.