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Title: Novel methodology for optimising the design, operation and maintenance of a multi-AGV system
Authors: Yan, Rundong
Dunnett, Sarah J.
Jackson, Lisa M.
Keywords: Automated guided vehicles
AGV
Coloured petri nets
Maintenance
Reliability
Issue Date: 2018
Publisher: Elsevier
Citation: YAN, R., DUNNETT, S.J. and JACKSON, L.M., 2018. Novel methodology for optimising the design, operation and maintenance of a multi-AGV system. Reliability Engineering and System Safety, 178, pp. 130-139.
Abstract: Automated guided vehicles (AGVs) have long been identified as a potential driver to improve system efficiency and lower labour costs in material handling systems. Accordingly, the reliability and availability of AGV systems is crucial to assure the stability and efficiency of these systems. However, the reliability issues and maintenance strategies of AGVs have not previously been studied sufficiently. This is even more marked in the case of multi-AGV systems that consist of fleets of AGVs. To fill this knowledge gap, research is conducted considering a multi-AGV system, consisting of three AGVs, in order to develop a scientific methodology for optimising the layout design, operation and maintenance of a multi-AGV system. Once an AGV is failed, it will be towed to the maintenance site for repair by a recycle vehicle to prevent deadlock and conflict. The efficiency of the recycling process of failed AGVs in a multi-AGV system, with respect to the change of location of the maintenance site, is analysed by the approach of coloured Petri nets (CPNs). A CPN model simulating the corrective and periodic preventive maintenance processes of failed AGVs is also developed in order to investigate the impact of different AGV maintenance strategies on the operation efficiency of the multi-AGV system. The simulation results obtained clearly show that the location of maintenance sites and maintenance strategies do have significant influence on the performance of a multi-AGV system, where corrective maintenance is an effective measure to maintain the long-term reliability and stability of the system.
Description: This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Sponsor: The work reported in this paper aligns to the working being researched as part of the EPSRC grant EP1K01413711.
Version: Published
DOI: 10.1016/j.ress.2018.06.003
URI: https://dspace.lboro.ac.uk/2134/33628
Publisher Link: https://doi.org/10.1016/j.ress.2018.06.003
ISSN: 0951-8320
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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