Forklifts behavior at intersection

Question

question

Het asked Sep 12 2024 at 7:26 PM Jeanette F commented Oct 21 2024 at 4:32 PM

Forklifts behavior at intersection

Are there any example models of forklifts that flow in and out of charging station to make sure it flows reasonably well? Behavior at intersection.

Software Version:

FlexSim 24.2.1

forklift movement 4-way intersection

· 6

Jason Lightfoot ♦♦ commented · Sep 16 2024 at 5:09 PM

Are you using the AGV template with charging? Can you tell us some more detail? Have you seen a behaviour that you don't like that you can share? We may be able to tell you how to get around it.

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Het Jason Lightfoot ♦♦ commented · Sep 16 2024 at 5:19 PM

I have not started building the model yet. In our warehouse, we are considering moving twenty current forklift charging/temporary parking stations to the other side of the warehouse to study and resolve two issues:

We want to study the traffic behavior during shift changes. This includes observing when all forklift drivers arrive at the station 15 minutes before their shift ends, as well as when the second shift forklift drivers arrive, pick up their forklifts, and begin their assigned work.
We aim to utilize the current charging station space for rack installation to increase storage capacity. Consequently, the charging stations would be relocated to a less preferable storage area.

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Jason Lightfoot ♦♦ Het commented · Sep 16 2024 at 5:25 PM

All of that should be possible - however we can't easily create or find an example for you since we suspect the layout will be important in how the system operates.

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Jeanette F ♦♦ commented · Oct 21 2024 at 4:32 PM

Hi @Het,

Were you able to solve your problem? If so, please add and accept an answer to let others know the solution. Or please respond to the previous comment so that we can continue to help you.

If we don't hear back in the next 3 business days, we'll assume you were able to solve your problem and we'll close this case in our tracker. You can always comment back at any time to reopen your question, or you can contact your local FlexSim distributor for phone or email help.

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Answer 1 · 2024-09-23T18:00:30Z

Jason Lightfoot answered Sep 23 2024 at 6:00 PM

Here's your model with two Model Layouts defined for the different q positions (I'd consider adding individual positions). I've added a timetable with all the forklifts and a process flow that detects the timetable down event and send the trucks to the queue for the duration of the timetable entry.

fork-lift_jl.fsm

fork-lift-jl.fsm (2.1 MiB)

· 4

Het commented · Sep 23 2024 at 6:23 PM

Hello Jason, Thank you for your reply. Before I review all function of recent changes, I have a quick question on setting up forklift path, it seems few transporters share common nodes in A* navigation. Because of that forklift blocks each other at assembly point.

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1727115706993.png (54.1 KiB)

Jason Lightfoot ♦♦ Het commented · Sep 25 2024 at 11:39 AM

If you're not ignoring inactive travellers then you'll probably need to give them tasks to get out of the way once they've delivered items.

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Het Jason Lightfoot ♦♦ commented · Sep 25 2024 at 2:06 PM

Good Morning Jason,

I have remove the inactive transporter from the model as of now, and copied your logic to assign few transporter travel towards new charging station. Maybe I am doing something wrong here. I have also created another time stable for few transporter with the same time table, but maybe I am doing something wrong here. I am not sure, why all transporter get freeze at their location at 9.00 am instead of travelling to their charging station for break. You would notice the behavior(9.00-9.30am) when you run the model.

Also, my general question is what should be done to assign 10 forklift station for individual forklift? I need to make ten different process flow? Right now three forklift travelled to current charging station and another three to new charging station.

I appreciate your guidance.

fork-lift-9.25.fsm

Should be Breakdown (9-9.15).jpg

Scheduled Down State.jpg

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should-be-breakdown-9-915.jpg (545.5 KiB)

scheduled-down-state.jpg (545.9 KiB)

fork-lift-925.fsm (2.1 MiB)

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