【摘要】 核级部件的设计必须满足相关工程规范标准的要求和规定,规范标准具有复杂的知识体系,使得如何表示工程规范标准的知识成为实现核级部件智能CAD系统的关键。根据工程规范标准的知识特点及设计过程的要求,结合框架、产生式规则和着色网等知识表示方法,提出了面向对象的混合知识表示方法。基于此表示方法给出的知识表示实例表明,该方法能够准确、完整地表示工程规范标准的复杂知识体系,并具有良好的知识重用性。更多还原

【Abstract】 It is a key point of developing nuclear component intelligent CAD system to represent multifarious knowledge of nuclear component design engineering codes/standards integrallty and exactly. According to the differences of knowledge features, the knowledge of the design engineering codes/standards is classified approximately into four main categories, such as illustrative knowledge, concept knowledge, procedural knowledge, and Meta knowledge.An object-oriented hybrid knowledge representation method, which can ensure the correlation and relative independentability of the different categories knowledge in the knowledge base, is presented. The four kinds of knowledge are represented by frame, production rule, colored Petri net, etc. respectively. By several illustrations in which knowledge is represented by this method, it is proved that this method has good universality while it is used to represent the knowledge of engineering codes/standards, and is convenient for knowledge reuse and expansion.更多还原