cpdistance returning strange value

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question

Ryosuke S asked Mar 10 2021 at 4:27 AM Ryosuke S commented Mar 10 2021 at 11:52 PM

cpdistance returning strange value

In the attached file, when AGV runs on the path, it returns error. When I measured the distance between the two points where the problem is occuring, cpdistance is returning unusual value. What is the cause?

pathconnection.fsm

Software Version:

FlexSim 20.1.3

agv flexsim 20.1.3 control points distance

capture067.jpg (42.3 KiB)

capture068.jpg (27.7 KiB)

pathconnection.fsm (71.5 KiB)

· 8

Joerg Vogel commented · Mar 10 2021 at 6:18 AM

Unreachable, because the order of start and end point routes over a wrong way direction. Or there is no connection at all.

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Jason Lightfoot ♦♦ commented · Mar 10 2021 at 12:04 PM

Yeah, there's something wrong with the straightPath2 since the one above is finding the distance without a problem. This may be a bug - when I get a chance I'll dig some more to see if I can see the cause of the issue - but I don't expect that to be a quick thing.

Now that I see the application you're going for here, I wonder if the actual pick travel across the face of the rack would be better handled by custom offset travel rather than autobuilding this vertical set of AGV paths. Have a quick search for examples of that and see if that might do what you want. Note: there might be issues with AGVs and offset travel too, so it might be a case of out of the frying pan and into the fire - more recent versions might be better.

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Ryosuke S Jason Lightfoot ♦♦ commented · Mar 10 2021 at 12:27 PM

@jason.lightfoot For this issue, I need a workround or anything to prevent this from happening (reason of the cause can come later). Customer is creating this and their work is currently stopped because of this. In their final layout there will be 20 aisles of Racks which means this there will be 18rows of these kind of paths. No way can be created by hand.

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Jason Lightfoot ♦♦ Ryosuke S commented · Mar 10 2021 at 1:12 PM

I understand, but we encountered issues when you were first asking about creating this structure with AGV paths. The question didn't seem to be "How do I get a task executer to travel around the pick face of a rack to retrieve items?" for which we could have considered the requirement from many angles. The workaround could be that you instead use a custom offset travel, but again I think this would need testing in the context of AGVs. Another option would be straight kinematics which are now probably much easier in process flows. All of these should be testable in one day to decide which is the best approach.

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Answer 1 · 2021-03-10T14:35:46Z

Jason Lightfoot answered Mar 10 2021 at 2:35 PM Ryosuke S commented Mar 10 2021 at 11:52 PM

I rebuilt the network, and refreshed the connections for the entire network and it looks okay.

pathconnection_jl.fsm

pathconnection-jl.fsm (71.9 KiB)

· 1

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