question

Osman Eralp avatar image
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Osman Eralp asked Adrian Haws commented

AGV jumps from one point to another

I've encountered a strange problem where AGVs jump from one point to another on a path:

The AGV starts to turn right, but then jumps back along the path to the start of the segment. I've tried deleting the segments and redrawing them, but that didn't help. Is this a bug?

FlexSim 16.1.2
agv path
jump1.gif (173.0 KiB)
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Jeff Nordgren avatar image Jeff Nordgren commented ·

@Osman Eralp

A graphic is fine for what it is doing visually but to be able to tell you why that is happening, we need to see the model. Otherwise there is no way to answer your question.

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Osman Eralp avatar image Osman Eralp Jeff Nordgren commented ·

I attached the model. The problem seems to occur anytime a curved line joins to the middle of a straight line.

TIA.avg-jumps.fsm

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avg-jumps.fsm (105.4 KiB)

1 Answer

Sam Stubbs avatar image
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Sam Stubbs answered Adrian Haws commented

So it was just a problem with the tracks being drawn. When an AGV enters a section of the track, it enters the beginning of the track, and since the track that was being merged onto was one continuous line, it "jumped" back to the start of that line. So to fix it, all I did was break up the line being merged onto into to two tracks. One leading up to the merge point. and one extending after it.

I've reattached your model below.

2257-avg-jumps.fsm


2257-avg-jumps.fsm (105.1 KiB)
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Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Osman Eralp avatar image Osman Eralp commented ·

Thanks for the quick analysis and workaround. I will use the two-segment approach. Your model reveals another problem: when the AGV travel from the drop off point down the two-segment path, it jumps across the first segment. In fact, you can delete the top segment and the AGV will jump across the gap. This seems like a bug to me. Can you please confirm? See attached modified model.

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Osman Eralp avatar image Osman Eralp commented ·
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Adrian Haws avatar image Adrian Haws Osman Eralp commented ·

@Osman Eralp Yes, that does look like a bug. We'll let the development team know. For now, if you move that line segment it will recalculate the AGV path.

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