Iteration in model

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luis-rodrigues asked Sep 24, '24 Logan Gold commented Oct 4, '24

Iteration in model

I'm working on a model in which the transporters are responsible to load the machines queues and keep them loaded.

From the historical data I know that the ocupation rate of the transporters loadind the machines is currently 30.08% and 5.48% to do the setup.

I'm getting 8.18% to the "loading mix" and 2.65% to the "setup", so I placed some delays to compensate this percentage.

Is there anyway that the software will automatically search for the optimal delay times to get the ocupation rate right?

I hope I was clear.

Thank you in advance.

mlall - iteration.fsm

Software Version:

FlexSim 24.1.0

iteration optimal solution

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mlall-iteration.fsm (369.9 KiB)

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

Logan Gold ♦♦ commented · Oct 04 at 08:46 PM

Hi @luis-rodrigues, was Felix Möhlmann's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always comment back to reopen your question.

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Answer 1 · 2024-09-27T08:40:25Z

Felix Möhlmann answered Sep 27, '24 luis-rodrigues commented Sep 27, '24

In any case, you should create two parameters that are used as the time in the Delay activities. Then create one performance measure each that denotes the difference between the current and the target value of the state percentages.

If you have an Optimizer license you can then create an optimization job that varies the delay time parameters and tries to minimize the performance measures.

If not, you can still create Experiment or Range Based jobs to run many replications in parallel and try to find a good combination of parameters that way.

mlall-iteration_1.fsm

https://docs.flexsim.com/en/24.2/Reference/Tools/Experimenter/Experimenter.html

mlall-iteration-1.fsm (374.8 KiB)

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

luis-rodrigues commented · Sep 27 at 08:58 AM

Thank you for your answer @Felix Möhlmann. Just to check it should be something like this?

NOTE: In the last question "Forklift to AGV" I edited my answer can you please check?

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Felix Möhlmann luis-rodrigues commented · Sep 27 at 09:10 AM

You want to minimize the performance measures and probably give the optimizer more than 10s of time. But other than that, yes.

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luis-rodrigues Felix Möhlmann commented · Sep 27 at 09:32 AM

So I just need some help analysing the results, I believe the scenario 7 is the best

This values I get are the ones I should place in the delays?

And are these the results I should expect?

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