Traffic control of "stop for turns" type AGV

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Steven Chen asked Jun 13, '22 Nanae H2 commented Jun 24, '22

Traffic control of "stop for turns" type AGV

Hello,

As other topics suggested, stop for turns AGV should use AStar instead of AGVNetwork, but I have no clue how to build traffic control in AStar.

In the sample model, each processors has two-way mandatory path, how to decide if those paths has AGV occupying, how to define a wait point if those paths occuppied.

agv_crossroad_rotation_astar_v22.1.fsm

In the other hand, abandon AGVNetwork also abandon its strength on traffic control, recharging, path speed. So I also tried other solutions.

Attached model from this topic places a control point for turn, but the turn point may not be triggered if the turn point at four-sides crossroad and the control point does not place at perfect position.

Making AGV stop and rotate at the AGVPath Crossing - FlexSim Community

Software Version:

FlexSim 22.1.1

astar agvnetwork

astar-agv-stuck.png (77.7 KiB)

agv-crossroad.png (73.5 KiB)

agv-crossroad-rotation-astar-v221.fsm (44.7 KiB)

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Answer 1 · 2022-06-14T18:18:13Z

Jonah K answered Jun 14, '22 Nanae H2 commented Jun 24, '22

agv-crossroad-rotation-astar_JK.fsm

This model will avoid collisions on the 2-way processor paths and should give you the tools necessary to implement this in more complex models.

I used network nodes to acquire an available processor from a list. The Sink path is an acquired resource from NN2, so the AGV must pass over NN3 in order for the Sink path to become available again.

1655230561199.png (102.3 KiB)

agv-crossroad-rotation-astar-jk.fsm (58.9 KiB)

· 1

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Nanae H2 commented · Jun 24, 2022 at 09:57 AM

thank you for your suggestion.

it gives me the hint, thank you very mutch.

it could specify the area with the divider, I guess it could limit the number of travelers entering the area by the rules.

but...I have no idea for cord how should it write.

I created a simple sample model and asked it public question.

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