Applied Technology Research, And Instance-based Gear Design

Case-Based Design is a new kind of intelligent design method and the appliance of CBR in design. Case-Based Reasoning is a memory-based method which utilizes old cases and experience to solve new problem, and it can be seen as analogism from a case to another case. Because CBR has much merit such as easily learning and using, facilitated knowledge acquirement, strong adaptability etc, it gets highly regard of artificial intelligence researcher. This paper focuses on the research of CBD system principium and application. After analyzing the main ideas of case-based design and the features of the involute cylinder gear, a prototype system for the involute cylinder gear design is developed. The following are the main research contents:1.Representation of design cases Representation of design cases is the basis of case-based design system. The paper analyzes the Representation of cases and the technology of object-oriented. The paper analyses the features of the involute cylinder gear and brings forward a special model-simplified and feature abstract method to structurize the representation of cases.2.Organization of design cases This paper adopts the technology of object-oriented and realizes a classification hierarchy with multi-abstract layers to organize cases. The advantage of this method is that its ability to divide the whole case base into several subspace so as to limit the searching bounds, which can improve the retrieval efficiency. On the basis of research the matching algorithms, the paper provides a new matching algorithm.3.Research on case retrieval Case retrieval algorithm and similarity calculation are the most important issues for current research in CBD. This paper combines ART-2 Neural Networks and multi-grade index and presents a two-level networks model for cases. This method can achieve dynamic clustering and progressively reduce the searching space to improve the adaptive capability and the efficiency of the system.4.Case Adaptation Strategy Case Adaptation Strategy full of difficulties in CBD. This paper analyzes several methods of case modification, and puts forward amethod to integrate CBR and RBR into the process of case modification which is fit for this CBD system.5. Research on the Case-based Design System This paper discusses the application of CBD technique in Involute Cylinder Gear Design system to explore for the practical application of CBD technique in mechanical field.