NEW APPROACH TO KNOWLEDGE

REPRESENTATION FOR ADVANCED

MANUFACTURING MODES

YAN Hongsen

(Research Institute of Automation, Southeast University, Nanjing 210096 )

Abstract: A new approach to knowledge representation for advanced manufacturing modes based on knowledge mesh (KM) and agent mesh (AM) is proposed to solve the self-reconfiguration problem of knowledgeable manufacturing systems. First, the definition of KMs is given and the relationships between KMs and AMs are presented. The multiple set and its mapping relationships onto the KM are then defined. The union, intersection and minus operations on the multiple sets of KMs are also defined and their related properties are presented. Physical meanings of properties of operations on the multiple sets are studied. Properties of operations on the multiple sets are compared with those of operations on the classical sets. Then the perfectness of a KM, the cut set between the two KMs, and the multiple cut set on the cut set are defined. On the basis of those above, the relational-database-based realization and the inference engine of KMs are studied. The self-reconfiguration methods based on both KMs and AMs are presented through two examples of self-reconfiguration of knowledgeable manufacturing systems, which verifies the validity of these methods.

Key words: Advanced manufacturing modes Knowledge representation Knowledge mesh (KM) Agent mesh (AM)

CLC No: TP182 

国家自然科学基金(60443001, 60574062)和江苏省高校“青蓝工程”第二期省级中青年学术带头人培养计划资助项目. Received 20051105, received in revised form 20060424