Implementation Method Of The Crane Design Expert System Research

At present, overhead travelling crane CAD system mainly is realized viatraditional programming method. Traditional CAD is suitable to numericalcalculation program，and is not suitable to symbolic inference and uncertainreasoning. program This paper studies characteristic and function of expertsystem for design and introduces some kinds of implementation methods ofexpert system for design and make an attempt respectively．The specificmethods to achieve the following:1) Traditional expert system for design based on symbolic inference2) Expert system for design based on case design3) Non-tradition expert system for numerical calculation4) Fuzzy expert system for designThe paper studies the key technologies of expert system for design.Introduce development tool of expert system—CLIPS. CLIPS is a expert systemdevelopment language. The paper discusses the interoperation technology ofVC++and CLIPS, and come up with a method of improved interoperationtechnology. The limitation is analyzed when text file is used as interoperationmedium.Detailed examples are given to introduce the implementation process ofoverhead travelling crane expert system for design. In these examples VC++isused as the main development platform, combining with tool of expertsystem—CLIPS. First of all, on the analysis of working principles of hoistingmechanism of overhead travelling crane，some derivations are performed tosummarize design formulas of hoisting mechanism of overhead travelling crane.On this base, overhead travelling crane expert systems for design are realized.The paper introduces in detail implementation steps of based on symbolicinference overhead travelling crane expert system for design, based on caseoverhead travelling crane expert system for design，based on optimize overheadtravelling crane fuzzy expert system for design. In addition, the methods torealize knowledgebase with expert system tool CLIPS is alse studied.Finally, a typical overhead travelling crane designs has been realized in this expert system as an example and completed form scheme design, parametercalculation and selection of components. The example attached demonstrates thecorrectness of the theory and application, and proved that the effect of expertsystem and practical value. Expert system for design is expected to improveproduct design efficiency, shorten the design cycle.