topic Re: Operator Walking over physical objects in FlexSim Forum

Operator Walking over physical objects

adilmlk — Wed, 01 Feb 2023 21:16:07 GMT

[ FlexSim 21.2.4 ]

Hello,

In my model the Operators walk over pallet locations(queues) with boxes on it which is not realistic. I saw that we can add network nodes to the model. Is there any other way to make the operator not walk over a physical object? Adding network nodes seems like a extremely manual process for my model since I have 60 pallet locations between which an operator can walk.Global Table Model outside in.fsm

Re: Operator Walking over physical objects

Jeanette_Fullmer — Wed, 01 Feb 2023 21:25:42 GMT

Hello @Adil M,

There are a few ways to define the navigation of the operators. Network nodes in an option. There is also the A star Navigation.

Re: Operator Walking over physical objects

joerg_vogel_HsH — Thu, 02 Feb 2023 05:30:46 GMT

@Adil M, your operator walks over simulated virtual objects!

Re: Operator Walking over physical objects

jason_lightfoot_adsk — Thu, 02 Feb 2023 12:47:25 GMT

And in Astar you would add the objects in question so that they in effect become barriers.

Re: Operator Walking over physical objects

adilmlk — Thu, 02 Feb 2023 15:39:51 GMT

I tried adding Astar to my model but I'm unable to connect it to my queues. I initially tried connecting it to the group palletposstions-it did not connect. I then manually tried to connect each pallet location to A* by pressing down on "A" and dragging from A* to pallet location, but that has not helped either. Is there some step I'm missing?Global Table Model outside in.fsm

Re: Operator Walking over physical objects

jason_lightfoot_adsk — Thu, 02 Feb 2023 15:43:50 GMT

Just add them as member objects in the Astar Properties in the Toolbox.

.. and make sure you task executers are using the Astar Navigator - check in the Task executer Properties:

You can select all the non-operator objects and add them all with a single 'A' drag connect too.

You can select all the operator objects and change the navigator to Astar for all of them just by changing one in the Properties panel. Since you're using offset travel for moving around the queues you'll want to set the option "Use navigator for offset travel" too.

global-table-model-outside-in_jl.fsm

Re: Operator Walking over physical objects

adilmlk — Thu, 02 Feb 2023 16:00:38 GMT

Global Table Model outside in.fsmI added the queues as members and changed the task executer to A*- but the operators continue to walk over queues.

Re: Operator Walking over physical objects

Jeanette_Fullmer — Thu, 02 Feb 2023 16:07:00 GMT

Hello @Adil M,

you can change the operators to use the navigator for offset travel.

global-table-model-outside-in (1)_1.fsm

Re: Operator Walking over physical objects

adilmlk — Thu, 02 Feb 2023 16:10:38 GMT

That worked. Thank you! @Jeanette F @Jason Lightfoot

Re: Operator Walking over physical objects

adilmlk — Thu, 02 Feb 2023 16:15:33 GMT

I'm encountering a new error in the model now. The Operators have created a deadlock. Probably because 2 operators are trying to go in opposite directions through the same path. Is there a way to resolve this? Global Table Model outside in.fsm

Re: Operator Walking over physical objects

Jeanette_Fullmer — Thu, 02 Feb 2023 16:54:58 GMT

Hello @Adil M,

You could solve this in a few ways. You could add in paths to make it so aisles are one directional. You can also change the sizing of the a star grid. To change it you select the grid bounds and then in the properties panel you can see the options to change it. I changed the gid size in the following model.

global-table-model-outside-in (2)_1.fsm

Re: Operator Walking over physical objects

adilmlk — Thu, 02 Feb 2023 17:22:23 GMT

Thank you!