How can I specify random values as delaytime for waypoints?

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Christiane Rs asked Jan 17, '22 Ryan Clark commented Jan 20, '22

How can I specify random values as delaytime for waypoints?

I have created a simulation in which the onward journey of the AGVs is delayed at the waypoints. Two types of waypoints are to be distinguished. With one group (Montage) there is a fixed delay. In the other (verzögerte Montage), the delaytime should vary randomly in a certain area. I tried to do this with a normal function (normal(5.3,0,2)). However, the result is the same as without the function, as if I had entered a fixed value. Also, the use of the Bernoulli function (bernoulli(33,5.5,5) has always brought the same result, regardless of the given probabilitywithDelay.fsm.

How can I specify variable random values in a certain range as a delay?

Software Version:

FlexSim 18.1.2

agv flexsim 18.1.2 delaytime agv waypoint

1642408088564.png (29.4 KiB)

withdelay.fsm (306.5 KiB)

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Ryan Clark commented · Jan 20, 2022 at 05:30 PM

Hi @Christiane Rs, was one of Joerg Vogel's or Felix Möhlmann's or Jason Lightfoot's answers helpful? If so, please click the "Accept" button at the bottom of the one that best answers your question. Or if you still have questions, add a comment and we'll continue the conversation.

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Answer 1 · 2022-01-17T11:11:23Z

Felix Möhlmann answered Jan 17, '22

I can't seem to replicate the issue. Different distribution produce varying results, all longer than a fixed waiting time (because longer waiting times propagate down the chain of agvs due to control point allocation).

This might sound obvious, but did you remember to hit "Apply" between changing the delay time and running the model again? I definitely sometimes forget to do that.

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Answer 2 · 2022-01-17T12:16:30Z

Joerg Vogel answered Jan 17, '22

Probably you have still activated repeat random streams. Turn it off.

https://docs.flexsim.com/en/22.0/BestPractices/ModelRepeatability/#repeat

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Answer 3 · 2022-01-17T09:28:24Z

Jason Lightfoot answered Jan 17, '22 Christiane Rs commented Jan 17, '22

Try 'normal' with one 'l' - recognized keywords should be shown in blue.

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Christiane Rs commented · Jan 17, 2022 at 09:54 AM

Sorry, I had just changed it for the screenshot and mistyped. But as you can see from the pictures, it doesn't make a difference even spelled correctly

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Christiane Rs commented · Jan 17, 2022 at 10:14 AM

Do you have any other suggestions? As you can see from my comment, time does not change even with correct keywords.

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