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基于知识的机械产品概念设计启发式求解
A Knowledge-based Heuristic Approach to the Conceptual Design of Mechanical Products
【摘要】 从能量转换的角度建立了产品概念设计的功能—行为—结构求解框架,分别采用输入输出转换和键合图对功能与行为进行建模;建立了概念设计的知识获取框架,基于功能—行为—结构框架抽取设计知识,结合产生式规则和面向对象方法进行对知识进行表示;基于A*算法开发了一种启发式求解策略,通过模糊多准则决策定义了评估函数,继而对状态空间进行搜索并获取了满意解;结合自动门驱动装置设计实例验证了启发式求解算法的正确性。
【Abstract】 A function-behavior-structure(FBS) framework for the conceptual design of mechanical products was presented from the perspective of energy transformation,in which the function and behavior were modeled with transformation between input and output and based on bond graphs,respectively.A model for knowledge acquisition was built,which included two parts: knowledge elicitation and knowledge representation.The design knowledge was elicited based on the FBS framework,and represented with a hybrid scheme of object-oriented and rule-based paradigms.By defining the heuristic evaluation function as a fuzzy multi-criteria decision-making,a A*-algorithm-based heuristic solving strategy was developed to obtain the satisfied solution in a reasonable time.In the end,a case study of auto gate’s driving system is given to demonstrate the proposed approach.
【Key words】 conceptual design; heuristic solving strategy; knowledge-based; fuzzy multi-criteria decision-making;
- 【文献出处】 中国机械工程 ,China Mechanical Engineering(中国机械工程) , 编辑部邮箱 ,2006年13期
- 【分类号】TP391.7
- 【被引频次】20
- 【下载频次】344