question

David Seo avatar image
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David Seo asked Braydn T commented

An error which looks like a bug...

I met an error like a bug in attached model.

I want to know what's the problem of it.

I am testing a AGV model using A*.

astar-agv-model-2.fsm

time: 32.007203 exception: Exception caught in Executive::processeventinlist(). Throwing. time: 32.007203 exception: Exception caught in Executive::steptotime(). Throwing. time: 32.007203 exception: Exception caught in Executive::tick(). Throwing. time: 32.007203 exception: int runthemessageloop() #4 exception: Executive::instance.tick(); time: 32.007203 exception: int runthemessageloop() #6

FlexSim 19.1.1
agv with astar
astar-agv-model-2.fsm (32.7 KiB)
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wonjo P avatar image wonjo P commented ·

안녕하세요 이사님

I think this error pop-up when the distance between AGVs is same.

Because the dispatcher role is closest on the distance.

Then, I change the location of Taskexecutor1.

But, I don't know why occur this error exactly. So, If someone know that problem exactly, reply to this question please.

21166-astar-agv-model-2-wonjo.fsm

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21166-astar-agv-model-2-wonjo.fsm (32.5 KiB)

1 Answer

Phil BoBo avatar image
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Phil BoBo answered Braydn T commented

Your On Resource Available trigger that is sending the agvs to Queue1 is causing the issues you are seeing.

The easiest solution is to add a different location as the "Home" location that isn't the exact same spot as the queue that they are trying to load from. Then the idle ones trying to go "home" will stop getting in the way of the busy ones that are trying to load from the queue.

See the attached model. 21166-astar-agv-model-2-1.fsm


21166-astar-agv-model-2-1.fsm (33.5 KiB)
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Braydn T avatar image Braydn T commented ·

@wonjo P

Did this answer help you? If so, could you please accept it? If not, could you let us know what else we can do to help you? Thanks!

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