ABSTRACT
Abstract: In order to improve intelligent heuristic performance, information support, computational capabilities, control mechanism, and interface self-adaptability of specialized product design systems, mechanical product design system based on knowledge fusion and intelligent navigation is studied systematically. After its product design flow is analyzed, the system is organized in terms of processes that constitute the whole design flow. Then, its information flow, control flow, and design flow are also determined. Based on knowledge fusion, the text of knowledge and information resources is defined that is the key basis and original information for system development. The principles of static intelligent navigation and dynamic navigation are expatiated. According to the requirements of CAD system development based on intelligent navigation, its architecture and workflow are put forward. Taking frictional wheel drive design for example, its functions and performance are illuminated in detail. The system can be applied to typical mechanical product design. While all-purpose CAD systems aim mainly at structure design, modeling and drafting, the developed system directs its attention to more specialized analyses and computation that make up for the deficiency of commercial CAD/CAM systems. Keywords: Knowledge Fusion; Intelligent Navigation; Product Design; System Development
ACM Subject Classification Index: J.6 [COMPUTER-AIDED ENGINEERING]: Computer-aided design (CAD)
1. Introduction
Modern manufacturing puts forward new demands for CAD/CAM software. Traditional CAD/CAM software is usually all-purpose, but it does not provide enough specialized standards, criteria and fundamental data for product design in specific domains. As a result, design efficiency is not satisfying. At the same time, traditional CAD/CAM systems are mainly used to design product structures and not capable of professional analyses. It demands that professional CAD/CAM software provide various standards, criteria, analytic programs, fundamental data, and control mechanism. It makes designers devote themselves to creative thinking. This kind of CAD/CAM software embodies the thinking process of professionals and heuristic characteristics. In order to improve its adaptability, flexibility, and expediency, software developers must cooperate with professionals closely to develop product design system based on knowledge fusion and intelligent navigation [1"2]. 1.1 Determination of knowledge-information resource text based on knowledge fusion Knowledge-information resource text is determined by software experts and domain experts cooperatively based on the analysis of relevant technological data. It is the basis and original data for software development to determine whether the system developed can effectively realize intelligent navigation, heuristic design procedure, and knowledge fusion.
