Agent module questions

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question

Cor van 't Woudt asked May 14, '20 Benjamin W2 commented Sep 2, '20

Agent module questions

Hi,
I tried to use the new agent module on a social distancing problem we have with Covid-19.

A nice feature would be if walls could "break" the proximity. Walls seems to have no effect on proximity and the repulsive force, where for social distancing there is no problem if you're behind a wall.

I've some problems with keeping an agent at it's goal destination. After reaching it's goal, he is pushed away by a repulsive force. I tried to use an active rules "only when traveling" and "neighbors with social force behavior" but when using this feature the repulsive force also worked on walls.

operator 2 reached it's destionation seat

and is pushed away by operator 3 on way to his seat

Software Version:

FlexSim 20.1.1

flexsim 20.1.1 agent module social force

proximity-through-wall.png (36.8 KiB)

pushed-away-1.png (35.8 KiB)

pushed-away-2.png (35.9 KiB)

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anthony.johnson ♦♦ commented · May 14, 2020 at 02:23 PM

@Cor van 't Woudt could you please post a model with this question?

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Ben Wilson ♦♦ commented · Aug 28, 2020 at 09:08 PM

Hi @cor.vtw

To receive a more accurate solution, please post your model or a sample model that demonstrates your question. Proprietary models can be posted as a private question, visible only FlexSim U.S. support.

You can also contact your local FlexSim distributor for email or phone support.

If we don't hear from you in the next 3 business days we'll assume you were able to solve your problem on your own and we'll close this case. Feel free to comment back at any time to reopen.

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Cor van 't Woudt commented · Aug 31, 2020 at 06:42 AM

Dear @ben.wilson, @anthony.johnson,

I'm so sorry, I totally missed the question of Anthony in May.

Hereby I send the model in which I was experimenting. Entering a train question Cor van t Woudt.fsm

We were very impressed by the options to influence the behaviour and to maintain social distance between actors and normal distances to walls etc. I was (at that moment) not experienced enough to work my way along the problems we had, collegues have answered the question with AnyLogic which we had more expecience with but where we missed also a lot of dynamic features. So we're still very interested in an answer and in the next version of the agent module.

Kind regards,

Cor van 't Woudt
NS / Dutch Railways

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entering-a-train-question-cor-van-t-woudt.fsm (174.9 KiB)

Answer 1 · 2020-08-31T16:29:11Z

anthony.johnson answered Aug 31, '20 Benjamin W2 commented Sep 2, '20

The "neighbors with social force behavior" active rule should filter out walls in an agent's social forces. However, there currently isn't a feature to ignore a neighbor if he is behind a wall. We've added an item to our feature request list that is a "line-of-sight" active rule, which will cause the agent to ignore neighbors who are behind another agent (e.g. a wall).

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Cor van 't Woudt commented · Aug 31, 2020 at 07:38 PM

Thank you for your answer.
Another problem in the same model was that I couldn't keep the first agent that arrived at it's destination on it's place (seat). I would have the (2nd) moving agent passing hum, trying to keep distance (or pass him as wide as possible if the full social distance is not possible) without the first agent moving away. Do you have a hint how I can keep seated persons on their place?

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Benjamin W2 Cor van 't Woudt commented · Sep 02, 2020 at 09:25 PM

Hi @cor.vtw, this sounds like a new question not related to the original post. Go ahead and create a new question post with this question. It will help us keep our forum neat and searchable.

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