Keeping the Forks in specified distance

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Ryosuke S asked Mar 22 2021 at 9:50 AM Jason Lightfoot commented Apr 07 2021 at 1:39 PM

Keeping the Forks in specified distance

I have two forks controlled with A* and I want to keep the distance of the forks in 3 meters if it gets close. I plan to use the Agent, however when I do that, the fork keeps going around the target slot and never arrives at target position. How do I set in this case? Do I use proximity?

FloorStorage_Oneway_Agent.fsm

Software Version:

FlexSim 20.1.3

flexsim 20.1.3 agent module forklift movement

capture078.jpg (275.6 KiB)

floorstorage-oneway-agent.fsm (46.1 KiB)

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Answer 1 · 2021-03-24T20:09:17Z

Jeanette F answered Mar 24 2021 at 8:09 PM Jeanette F commented Apr 01 2021 at 10:00 PM

Yes, I would use proximity.

Here is a video that goes over Agent systems well. Minute 12:02 goes over what you might be specifically looking for with the Agent Proximity Behavior, but that example model starts on minute 7:49.

Here is the post with the example models shown in the video for you to reference if needed.

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Ryosuke S commented · Mar 25 2021 at 5:04 AM

@Jeanette F I did go though the video and the samples you raised for me, but I don't know which should I use to get to the goal. Why would you say you would use proximity? I set proximity, but forks gets closer than 3m which I set to avoid.

FloorStorage_Oneway_Agent2.fsm

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floorstorage-oneway-agent2.fsm (47.4 KiB)

Jeanette F ♦♦ Ryosuke S commented · Mar 26 2021 at 4:42 PM

You used the code from the broad phase of the example model. The broad phase only was meant to slow the AGV's. The narrow phase will stop the AGV's.

Here is your model with the narrow phase code modified so the transporter furthest from the queue is the one that stops.

I notice that when a transporter is stopped it does not have an allocated node on the A* grid until it resumes its previous task. This makes it possible for the moving transporter to drive over the other. I am still looking for solutions but decided to go ahead and share what I had intended you to use from the example model.

floorstorage-oneway-agent2_1.fsm

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floorstorage-oneway-agent2-1.fsm (50.4 KiB)

Ryosuke S Jeanette F ♦♦ commented · Mar 29 2021 at 12:44 AM

@Jeanette F Thank you for your support. Yes, I have noticed that transporter drive over the other. I hope there is a solution to prevent this. Also, I noticed that the divider is being ignored in certain situation. I'm a little puzzled with this behavior.

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capture095.jpg (104.7 KiB)

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