Operations Research Transactions ›› 2019, Vol. 23 ›› Issue (4): 86-94.doi: 10.15960/j.cnki.issn.1007-6093.2019.04.007

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Scheduling problem with time-and-position-dependent effect on two parallel machines environments

GOU Yan1, DAI Qin2, ZHANG Xingong3,*   

  1. 1. Bureau of Civil Affairs, Junlian Yibin 645250, Sichuan, China;
    2. Department of Economy and Management, Shanghai University of Electric Power, Shanghai 200090, China;
    3. College of Mathematics Science, Chongqing Normal University, Chongqing 401331, China
  • Received:2017-07-26 Published:2019-12-04

Abstract: This paper studies parallel-machine scheduling problems with time-andposition effect and maintenance restrictions, which parallel-machine environments are only involved with the identical parallel machines and unrelated machines. The actual processing time of the job is the function of position and time, and machines need to be maintained. Objective function is consisted of total machine load, total completion time and total waiting time. Under unrelated machines, the proposed problem can be solved by transferring into assignment problem, which its time complexity is O(nk+2/(k-1)!). Under identical parallel machines, the proposed problem can be solved by matching algorithm, which its time complexity is O((2n+m+n log n)nk-1/(k-1)!).

Key words: scheduling, parallel machines, time-and-position-dependent effect, maintenance activities

CLC Number: