Energy-efficient on/off control in serial production lines with Bernoulli machines

Xiaohan Wang (), Yaping Dai () and Zhiyang Jia ()
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Xiaohan Wang: School of Automation, Beijing Institute of Technology
Yaping Dai: School of Automation, Beijing Institute of Technology
Zhiyang Jia: School of Automation, Beijing Institute of Technology

Flexible Services and Manufacturing Journal, 2024, vol. 36, issue 1, No 4, 103-128

Abstract: Abstract Achieving energy-efficient production has always been a critical issue for the manufacturing industry. In many production systems, the waste of energy mainly results from unbalanced machine efficiency, which brings about a considerable amount of idle time. One of the most important approaches to addressing this problem is to adopt an On/Off control policy on those underutilized machines. In this paper, serial production lines with multiple unreliable machines and finite buffers are considered. All machines are assumed to obey the Bernoulli reliability model, which is commonly used when the machine downtime is relatively short and comparable to the production cycle time (e.g., engine assembly). Besides, considering that in industrial practice, machines usually have to go through a preparation phase during mode switching, a non-negligible warm-up (cool-down) period is taken into account. An On/Off control policy is calculated for lines with two or three machines based on a Markov decision process (MDP) model, then the results are extended to multi-machine lines using a decomposition procedure. Numerical experiments show that the proposed policy achieves better system performance compared to the threshold policy that is commonly used in energy-efficient On/Off control.

Keywords: Production system engineering; Energy-efficient manufacturing; On/off control; Bernoulli reliability model; Serial production line (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10696-022-09481-8

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