Empirical study on entropy models of cellular manufacturing systems  

作　　者：Zhifeng Zhang Renbin Xiao 

机构地区：[1]CAD Center, Huazhong University of Science and Technology, Wuhan 430074, China [2]Economics and Management School of Nanchang, Hangkong University, Nanchang 330063, China

出　　处：《Progress in Natural Science:Materials International》2009年第3期389-395,共7页自然科学进展·国际材料（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60474077);program for New Century Excellent Talents in Universityof China (Grant No. NCET-05-0653)

摘　　要：From the theoretical point of view, the states of manufacturing resources can be monitored and assessed through the amount of information needed to describe their technological structure and operational state. The amount of information needed to describe cellular manufacturing systems is investigated by two measures： the structural entropy and the operational entropy. Based on the Shannon entropy, the models of the structural entropy and the operational entropy of cellular manufacturing systems are developed, and the cognizance of the states of manufacturing resources is also illustrated. Scheduling is introduced to measure the entropy models of cellular manufacturing systems, and the feasible concepts of maximum schedule horizon and schedule adherence are advanced to quantitatively evaluate the effectiveness of schedules. Finally, an example is used to demonstrate the validity of the proposed methodology. program for New Century Excellent Talents in University of China （Grant No. NCET-05-0653）.From the theoretical point of view, the states of manufacturing resources can be monitored and assessed through the amount of infor- mation needed to describe their technological structure and operational state. The amount of information needed to describe cellular manufacturing systems is investigated by two measures: the structural entropy and the operational entropy. Based on the Shannon entropy, the models of the structural entropy and the operational entropy of cellular manufacturing systems are developed, and the cog- nizance of the states of manufacturing resources is also illustrated. Scheduling is introduced to measure the entropy models of cellular manufacturing systems, and the feasible concepts of maximum schedule horizon and schedule adherence are advanced to quantitatively evaluate the effectiveness of schedules. Finally, an example is used to demonstrate the validity of the proposed methodology.

关 键 词：Cellular manufacturing systems Structural entropy Operational entropy SCHEDULING 

分 类 号：TH166[机械工程—机械制造及自动化] TP391.4[自动化与计算机技术—计算机应用技术]