Optimal scheduling of car manufacturing post-production assembly operations

19 October 2022

— Artelys has delivered Toyota with a computation algorithm to optimally plan post-production assembly operations.
Toyota post-production activity planning
Toyota Motor Europe (TME) is in charge of manufacturing and distribution activities of Toyota in Europe. A customer buying a vehicle from a Toyota retailer can add some options to the vehicle such as a navigation system, a towing bar or a parking assist system. To minimise the delivery time, these options are added to the vehicle in a different workshop from the one hosting the assembly line, closer to the final Toyota retailer.

The scheduling of post-production activities is complex because:

  • The installation activities require specific resources,
  • They require versatile operators’ skills,
  • They are spread among different shifts,
  • Vehicles have delivery deadlines.
  • Therefore, a careful scheduling of work orders is needed to ensure smooth and optimized operations.

    A Toyota post-production assembly workshop.

    Artelys operational computation module

    In order to improve the scheduling process of the following day’s activities, Artelys has developed an operational computation module deployed as a micro-service that is directly integrated into the application developed in-house by TME for their planning processes.

    The developed module schedules the activities of the following day while optimising several metrics using Artelys Kalis, a constraint-programming solver with an interface dedicated to scheduling problems. The process of creating the following day’s schedule has been improved by replacing a tedious manual Excel process and has been shortened from approximately 2.5 hours to less than 30 minutes, while building solutions of better quality.

    The computing speed allows for intra-day re-scheduling whenever a contingency occurs, as Artelys’ solution allows to schedule up to thousands of tasks in less than a minute. The solution is in use 7 days a week and is progressively deployed in all TME workshops.

    If you want to know more about Artelys optimization services, check out our dedicated web page or contact us!

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    — On the 2nd and 3rd of November, Artelys has organised a training session for the INSULAE H2020 project partners dedicated to the Investment Planning Tool (IPT), a software solution leveraging the Artelys Crystal platform and used to represent insular systems and their specificities. The tool is currently being developed by Artelys within the INSULAE project, funded by the European Union’s Horizon 2020 research and innovation program under Grant Agreement No 824433.

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