Facing problems in the AStar (A*)

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Leena A asked Mar 30, '21 Leena A action Mar 30, '21

Facing problems in the AStar (A*)

Greetings all,

I hope you all doing well. I have three questions related to the A*, I believe.

As attached in picture1, the passenger should first take their carts then head to the waiting area, but it seems they go in circle path first and then take their cart.
The grid node's width is 0.5, but I believe that the A* is not working correctly, as shown in picture2.
Finally, when the model is not in the center, does this affect the model performance?

Thank you in advance!

SLHS_L7.fsm

Software Version:

FlexSim 20.2.2

flexsim 20.2.2 astar model agv with astar

screen-shot-2021-03-30-at-104004-pm.png (1.8 MiB)

screen-shot-2021-03-30-at-103916-pm.png (1.4 MiB)

slhs-l7.fsm (6.8 MiB)

Answer 1 · 2021-03-30T21:35:02Z

Matthew Gillespie answered Mar 30, '21

1. The first Walk activity has nothing in the Destination field. I assume this should be pointing at the Floor Storage object.

2. Why do you think this is incorrect? The plus shows the center of a grid node. A square cut in half in the x and y will have four smaller squares inside of it.

3. No. But having such a large A* grid may cause slower model performance.

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