A Study On Conceptual Innovation Design System Based On Knowlegement

In this paper, we develop a conceptual innovation design system (CIDS) based on knowledge basement. It can be treated as a component that is compatible with CAD (Compter Aided-Design) system supported by High Technologh Plan. It can interact with the core component of CAD system by expresentation model and transfer interface. It proposes presentation model and tools for innovation deisgn, and constructs the presentation and application tier. CIDS includes methods of innovation design, repository for product design, evaluation subsystem and collaborative design module and so on. These modules can be integrated in theCIDS. It can be a soft component for CAD system and also be used in conception design for product design.In section two, we address two algorithms of CBR (Case Based Reasoning). One is modified from K-NN (K-Nearest Neighbor) algorithm. We modified matrice of reposity and formula of similarity degree. The other is a modified K_NN algorithm based vector parameter of similarity degree. It describles parts parameters of rotational invariance. In section three, we introduce subspace algorithm to estimate parts of cell phone. Firstly we propose MUPC (multiple parts classification) algorithm based MUSIC (multiple signal classification). Then we address EPPRIT (Estimating parts parameters via rotational invariance techniques) algorithm based ESPRIT (Estimating signal parameters via rotational invariance techniques). In section four, we design a CIDS framework. CIDS is a visual conception design system based on a PDM framework. The architecture is a multi-layered system model that includes the PDM framework layer, a CIDS-Server layer, an integration layer for I-DEAS and CIDS, and a CIDS-Client layer. The PDM framework layer provides a foundation of functional services. The CIDSServer layer and client layer can be utilized to develop a fully integrated conception innovation design system for managing the entire innovation design and analysis of computing process, from KA (Knowledge Acquirement) and KBM (Knowledge Base Management) to reasoning process, function model optimizing, model solving, simulation analysis and so on. Finally, we present our project on web-based collaborative design of geometric objects defined by implicit, explicit and parametric functions which are used interchangeably for defining geometry and appearance of the objects. We also integrate I_DEAS software to model geometric objects, and then transform them into VRML files to perform collaborative interactive modifications in this environment. Since the function-based models are small in size, it is possible to perform their collaborative interactive modifications with concurrent synchronous visualization at each client computer with any required level of details. We propose a general collaborative design framework based on the commonly available communication platform and illustrate it with the implemented software that can be used as a core part for different real life applications. The following are the creative works done in the thesis:1.) About CBR, we address two algorithms based CBR. One is modified from K-NN algorithm. We modified matrice of reposity and formula of similarity degree. The other is a modified K_NN algorithm based vector parameter of similarity degree. It describles parts parameters of rotational invariance.2.) In order to get a better estimation of product parts, we introduce subspace algorithm to estimate parts of cell phone. Firstly we propose MUPC algorithm based MUSIC algorithm. Then we address EPPRIT algorithm based ESPRIT algorithm.3.) We design a CIDS framework. CIDS is a visual conception design system based on a PDM framework. The architecture is a multi-layered system model that includes the PDM framework layer, a CIDS-Server layer, an integration layer for I-DEAS and CIDS, and a CIDS-Client layer and so on.4.) We present our project on web-based collaborative design of geometric objects defined by implicit, explicit and parametric functions which are used interchangeably for defining geometry and appearance of the objects. We also integrate I_DEAS software to model geometric objects, and then transform them into VRML files to perform collaborative interactive modifications in this environment. Since the function-based models are small in size, it is possible to perform their collaborative interactive modifications with concurrent synchronous visualization at each client computer with any required level of details. We propose a general collaborative design framework based on the commonly available communication platform and illustrate it with the implemented software that can be used as a core part for different real life applications.