计算机辅助的机构运动行为知识表示及推理

Computer aided knowledge representation and reasoning of motion behavior of mechanisms

知识源于人类对对象的分类能力。机械运动系统概念设计是一个功能→行为→结构的过程，本文在用属性及属性值的方式表示机构运动行为的基础上，提出了机构系统方案设计的匹配推理过程，并用ＢＮＦ形式和生成规则相结合的方法生成机构的运动行为知识。在此基础上，给出了生成行为知识的推理流程图，可以在计算机的辅助下表示机构的运动行为。最后以一个示例说明该方法的应用。

Knowledge comes from the classification ability directed at the object by human being.The conceptual design of mechanic movement system is a process of function→behavior→structure matching.On the basis of represcnting behavior of machinery movement utilizing the mode of attribution and its value,this paper put forward the matching reasoning process of plan design of mechanism system and produced the bchavior knowledge of mechanism movement by the use of method of combining BNF form representation with generation rule.Take this as a base,the reasoning flow chart for generating behavior knowledge is prcsented,and the motion behavior of mechanism can be expressed by the aid of computer.Finally an illustration is taken to show the application of that method.