On the conflict between energy, stability and robustness in production schedules
Paper i proceeding, 2016

In this paper, a novel contribution to highlight the conflict between energy efficiency, robustness and stability is presented. Energy optimization is combined with robust scheduling techniques to analyze the trade-off. In rescheduling, slack is often used in order to protect a schedule from disruptions. However, results from the literature on energy minimization show that a reduction in energy consumption is achieved by extending the execution time of operations. Thus, slack in schedules is eliminated on behalf of longer execution times. A continuous-time formulation is proposed using a mixed-integer nonlinear programming model including a multi-objective corresponding to energy, robustness, stability and makespan. Surrogate slack-based measures are used to evaluate robustness and stability. Previous work connecting the two research fields use simulation for analyzing the impact of disruptions in order to generate robust production schedules. Our results show that an increase in energy efficiency comes at a cost of reducing stability and robustness and hence becoming more sensitive to disruptions.

Energy Consumption

Optimization

Robots

Robustness

Stability Criteria

Schedules

Författare

Nina Sundström

Chalmers, Signaler och system, System- och reglerteknik, Automation

Oskar Wigström

Chalmers, Signaler och system, System- och reglerteknik, Automation

Sarmad Riazi

Chalmers, Signaler och system, System- och reglerteknik, Automation

Bengt Lennartson

Chalmers, Signaler och system, System- och reglerteknik, Automation

Proc. 12th IEEE Conference on Automation Science and Engineering (CASE 2016), Fort Worth, Texas, August

2161-8089 (eISSN)

1263-1269

Styrkeområden

Informations- och kommunikationsteknik

Produktion

Drivkrafter

Hållbar utveckling

Ämneskategorier

Robotteknik och automation

DOI

10.1109/COASE.2016.7743552

ISBN

978-1-5090-2409-4

Mer information

Skapat

2017-10-07