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Liam Chiu avatar image
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Liam Chiu asked Liam Chiu commented

AMHS transport track

Hi,

I am developing a simulation model for a semiconductor wafer fab, focusing on a vehicle-based Automated Material Handling System (AMHS).

1709629017699.pngIn the past, semiconductor fabs commonly used AutoMod for model development.

1709628999878.pngI would like to know if FlexSim has the capability to elevate tracks, place the ControlPoint beneath the tracks, and enable AGV vehicles to operate in an inverted manner.

1709628980101.png

I have attached a test model. Thank you very much for your suggestions.

https://www.youtube.com/watch?v=TRlc3qgk2-U&t=53s

agvv - test.fsm

FlexSim 22.2.0
agvpathcontrolpointsamhs
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1 Answer

Felix Möhlmann avatar image
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Felix Möhlmann answered Liam Chiu commented

Control Points must always be placed on the path. There is no way to decouple those.

With that said there are some things you could. In ascending order of complexity:

- Change the shape factors of the AGVs, so the 3D shape appears beneath the path. The actual object still travels on top as can be seen by the bounding box.

1709636909569.png

- Place the paths into another object (plane) and invert that object. The AGVs should then travel upside down.

1709636975259.png

- Hide the actual path a use custom code to draw reactangles and sections of circles above the paths. For this you can read the location properties of the path to position the "fake" objects correctly.

You'd likely place all paths into a group to be able to easily refer to them and place draw commands into the On Draw trigger of some object in the model.

https://docs.flexsim.com/en/21.1/Reference/CodingInFlexSim/CommandReference/CommandGroups.html#drawrect

https://docs.flexsim.com/en/21.1/Reference/CodingInFlexSim/CommandReference/CommandGroups.html#drawdisk


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Liam Chiu avatar image Liam Chiu commented ·

@Felix Möhlmann Thank you for the methods you provided; it's very helpful!!

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