question

Raashid Mohammed avatar image
0 Likes"
Raashid Mohammed asked Joshua S commented

How to avoid collision using A star for rack

rackwithtruck.fsm

Hi

I have two trucks unloading box on rack. Even I setup grid using A star they still seems to collide with each other due to offset travel. How to avoid collision when loading racks with process flow

Attached is example model

FlexSim 18.2.2
a star
rackwithtruck.fsm (32.3 KiB)
5 |100000

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

1 Answer

Joshua S avatar image
3 Likes"
Joshua S answered Joshua S commented

You can avoid collision with each other by increasing the Node Spacing. This allows more space between nodes the A* creates to build its pathing, so the Transports don't come as close to each other.

· 4
5 |100000

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

Craig DIckson avatar image Craig DIckson commented ·

@Joshua S So spacing between vehicles/operators etc. using A Star is defined solely by node spacing, not by the physical size of the transport (or flow item?)

0 Likes 0 ·
Joshua S avatar image Joshua S Craig DIckson commented ·

@Craig DIckson correct.

0 Likes 0 ·
Craig DIckson avatar image Craig DIckson Joshua S commented ·

@Joshua S Making the grid spacing larger works for the queuing, except that it makes the location less accurate. Even if I use a Travel to Location activity, the TE will often stop one or more nodes away, which in this case is in the middle of a travel aisle. Is there a way to force the TE to an exact grid location?

0 Likes 0 ·
Show more comments