关键词: 机械对称性, 方案设计, 对称性知识, 机械对称特征

Abstract: Numerical example analysis demonstrated that symmetry was widely existed and played an important role in realizing functions and properties of mechanical products. A multi-perspective and multi-level knowledge system of the concept of mechanical symmetry was proposed. The knowledge systems of general requirements, design standards and principles were established. A variety of association knowledge for symmetry application was mined, and the product innovative strategies were proposed. A case-based mechanical symmetry knowledge expression model was established, and a computer-aided design platform, which contained the method base of data mining, the databases of innovative design requirements, standards and principles, and the knowledge base of over 3000 symmetry instances, was constructed. Finally, the innovative design of a wind matching turbine was taken as a success example to implement and validate the symmetry application knowledge and strategies extracted by the platform.

Key words: mechanical symmetry, scheme design, symmetry knowledge, mechanical symmetry characteristics, product design