Based On The Case Of Product Modeling Design Methods And Innovation Of CAD Technology

The product innovation design question is the modern industry crucial question, the product innovation is the enterprise development source power. The product innovative design may manifest in the product function, the structure, the modelling, the material quality, the environmental protection and so on many aspect improvements, the product modelling is an essential aspect. Although the traditional CAD software may assist the designer to carry on the spare part structural design, but it still did not have the innovative design function, therefore the designer designs a model of new product using the conventional CAD software is not an easy matter in a short time. The product innovation design question are many are the present has the product to improve the design question, can use the existing product resources to take the innovative design fully the foundation, and applies the innovative design method in the design, to develops the design mentality, the enhancement rated capacity appears especially important.This article take the product modelling innovative design as the object of study, has carried on the analysis to the product innovation design's importance as well as the development present situation, has conducted the deep research to the product innovation design theory and the existing product innovation design method, has analyzed the present situation insufficiency and the development direction. Proposed that synthesis methods and so on neural network, genetic algorithm, modelling database, case inference carry on the product modelling innovative design the method with to realize the way. First has analyzed based on the case inference (CBR) the technical characteristic, as well as it in product innovation design application method; Has studied the product case information expression, the memory as well as the retrieval mode, using ODBC API, Visual C++6.0, Access, object-oriented and the XML tool unified has constructed the product case database; Should serve as the thorough research to the neural network and the genetic algorithm in the product modelling innovative design, proposed the product modelling element division and the quantification method, based on the case product prototype extraction method; Has established between the product modelling image and the product modelling characteristic curve, the color maps relational the BP network model, causes the product modelling element parametrization, and enables its to apply in the heredity optimization, achieves the product modelling innovative design goal; Finally in had in the case information foundation, the union synthesis innovative design method, take the home use passenger vehicle as an example, realized through the procedure with confirms has stated the innovative design method the validity.