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Yogi avatar image
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Yogi asked Felix Möhlmann commented

AGV needs to load item from multiple que's connected to different picking points

  • AGV Multiple loading stations.fsm
  • I want to perform the below tasks in my simulation model.
  • Loading: Ensure each AGV picks up items from Que 52, 40, and 43.
  • Unloading: Direct the AGVs to unload all collected items at Que 50.
  • Stopping: Program AGVs to pause at each control point for 5 minutes before continuing.

Could you help me with this?

FlexSim 22.2.0
agv
agv-multiple-loading-stations.fsm (59.4 KiB)
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1 Answer

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Felix Möhlmann answered Felix Möhlmann commented Best Answer

It is pretty much always easier to build your own Process Flow instead of using the template options for something they are not meant to do.

The pauses at the intermediate CPs can be implemented through the Waypoint system in the AGV Network Properties.

agv-multiple-loading-stations_1.fsm


agv-multiple-loading-stations-1.fsm (140.3 KiB)
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Yogi avatar image Yogi commented ·

Hi Felix,

Thank you very much for your quick support! I’m new to FlexSim and currently exploring its capabilities to demonstrate proof of concepts for Discrete Event Simulation (DES) within my organization. I appreciate any guidance you can provide!

Your solution resolved the issue; however, when I tried to apply the same approach in my model, the AGV is not loading items and is getting stuck at Unload Queue 55.

Could you help me troubleshoot this once again?agv-multiple-loading-stations-1.7z

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agv-multiple-loading-stations-1.7z (18.8 MiB)
Felix Möhlmann avatar image Felix Möhlmann Yogi commented ·

You need to add the "LoadQueues" group that containst the queue the AGVs should load from in the correct order.

The subflow needs to reference those queues assigned to the label "Queue" in the Run Sub Flow activity (Travel and Wait for Event activity).

capture2.png

The control points belonging to the queues must not be part of the waypoints. (As a workaround because the AGV's otherwise don't continue after they are redirected to the CP they are already at). Hence why those delays are implemented through Process Flow. Which are currently set to 5s instead of 5min in your model.

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capture2.png (17.9 KiB)
Yogi avatar image Yogi Felix Möhlmann commented ·

AGV Issue.pngAGV Problem.7zThanks again for your support—I truly appreciate your help!

I need a bit more assistance with my model. I'm forwarding the object from Queue40 to Queue54, where it gets loaded onto the AGV. However, the AGV doesn’t move forward after loading.

Additionally, the AGV should wait at CP29 until the object arrives at Queue54, as this is a Marriage station.

Could you help me resolve these issues?

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agv-issue.png (161.3 KiB)
agv-problem.7z (18.8 MiB)
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