AGV only Travel Empty after roughly 70000 seconds

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YANG W2 asked Oct 8, '20 Ben Wilson commented Oct 20, '20

AGV only Travel Empty after roughly 70000 seconds

I am simulating a production line integrated with AGV scenario, which I connected accordingly. My AGV was working well at the beginning, but after running roughly at 70000 seconds, these AGV started to only travel empty and not loading and unloading things to destination. I was using process flow AGV instead of dipatcher.

Software Version:

FlexSim 20.2.0

Software Version:

FlexSim 20.0.8

agv flexsim 20.2.0 flexsim 20.0.8 travel empty

wafer-in-wafer-saw.fsm (616.0 KiB)

· 1

Ben Wilson ♦♦ commented · Oct 20, 2020 at 02:47 PM

Hi @YANG W2, was tannerp's answer helpful? If so, please click the red "Accept" button on their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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Answer 1 · 2020-10-12T16:24:58Z

tannerp answered Oct 12, '20

@YANG W2,

I took a look at your model and I found that the AGVs didn't have any battery left around 60000 seconds. Their battery levels were 0.00. This made them search for a parking point to recharge. I found this peculiar, because most people tell the AGVs to recharge before the battery is 0.00. I looked around and found that your Process Flow Variables that tell an AGV when to recharge were missing somehow! I'm not sure if you deleted them intentionally or not. Either way, I added them back in and the model works much better! You can choose the values that you want the AGVs to use to recharge and resume working. I put in some arbitrary ones for testing and it worked.

I recommend adding them back. If you click a blank space in Process Flow, you can access "More Properties" and then add the variables as shown:

I hope this helps solve the issues you're experiencing.

missing-pf-variables.png (154.6 KiB)

add-back-pf-variables.png (75.1 KiB)

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