Operator overtaking with A Star

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Ryosuke S asked Jun 16, '21 Ryosuke S commented Jun 18, '21

Operator overtaking with A Star

Hello, there is two operators with different walking speed. They are carrying items through the corridor just wide enough for two people to walk in parallel. When fast walking operator catchup with the other operator, I would like the operator to overtake the slow one. Instead, it keeps bumping to the slow one. Is it possible to make the operator overtake? If I need to create some logic, that would be fine. But in that case, could you give me some guide how to do it?

You can reproduce the issue with attached layout. First run simulation up to 80sec, then run slowly.OperatorOvertaking.fsm

Software Version:

FlexSim 21.0.6

operator astar flexsim 21.0.6

overtake.jpg (96.8 KiB)

operatorovertaking.fsm (42.7 KiB)

Answer 1 · 2021-06-16T19:01:27Z

Jeanette F answered Jun 16, '21 Ryosuke S commented Jun 18, '21

Hello @Ryosuke S ,

When the faster operator is behind the slower one, the faster operator should step around the slower operator. To do this I created a process flow that looks at the operator and creates a token when it is blocked and then tells the blocked operator to step to the side and then the operator resumes its task.

To make this easier, I added a preferred path so the operators always walk on the right side of the hallway. This is so I can tell the operator to always step to its left when blocked.

I also created a few lines of code to evaluate which direction the operator is facing to help decide which way the operator should step relative to the operator.

int rot = token.Operator.rotation.z;
if (fmod(rot,360)<90 && fmod(rot,360)>-90){
return 1;
}
else {
return -1;
}

operatorovertaking_JF.fsm

1623869959205.png (32.9 KiB)

1623870060967.png (175.3 KiB)

operatorovertaking-jf.fsm (50.4 KiB)

· 1

Ryosuke S commented · Jun 18, 2021 at 03:01 AM

@Jeanette F Thank you! This is perfect.

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