机械工程学报

LIU Jun

RUI Zhiyuan

ZHAO Juntian

WEI Yaobing
Key Laboratory of Digital Manufacturing Technology and Application,
Lanzhou University of Technology,
Lanzhou 730050, China

SYSTEM AGGREGATION METHOD FOR FAILURE PRONE PRODUCTION LINES WITH UNRELIABLE LIMITED BUFFERS*

Abstract: Different from traditional aggregation method, the unreliable buffers are originally considered and a more general aggregation method is offered, in which not only the unreliable buffers are considered, but also the probabilities of system states are obtained by a discrete model rather than the continuous flow model of unreliable manufacturing systems. The solution technique is offered to get the system sate probabilities. The method advances the traditional system aggregation techniques. Numerical results specify the extended aggregation method and also show that the unreliable limited buffers have a strong impact on the efficiency of the production lines.

Key words: Hybrid system System aggregation method Unreliable buffers

* This project is supported by Great Technology Innovation of Gansu Province, China (No. 2GS063-A52-005-01), Natural Science Foundation of Gansu Province, China (No. 3ZS062-B25-034), and Research Item of Education Department of Gansu Province, China (No. 0703-06). Received February 6, 2007; received in revised form December 25, 2007; accepted January 9, 2008

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Biographical notes

LIU Jun, is currently an associate professor in Lanzhou University of
Technology, China. He received his PhD degree in engineering from Zhejiang University, China, in 2005. His current research interests include hybrid system, production process scheduling and control, agile manufacturing, lean production, etc.
Tel: +86-931-2758258; E-mail: lzhjliu@eyou.com

RUI Zhiyuan is currently a professor in Lanzhou University of Technology, China. His current research interests include outfit & digital manufacturing, agile manufacturing system, etc.
E-mail: zhiy_rui@lut.cn

ZHAO Juntian is currently an associate professor in Lanzhou University of Technology, China. His current research interests include complex industrial process modeling and control, lean production, etc.
E-mail: zjt@lut.cn

WEI Yaobing is currently a professor in Lanzhou University of Technology, China. His current research interests include virtual manufacturing, simulation technique, etc.
E-mail: wyb@lut.cn

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