topic Re: Collision problem in FlexSim Forum

Collision problem

a9080109 — Fri, 08 Apr 2022 01:45:27 GMT

[ FlexSim 20.0.10 ]

I want to know how to use pf to control the time of collision, so that I can collect data

agv-avoidance-rc.fsm

Re: Collision problem

jason_lightfoot_adsk — Fri, 08 Apr 2022 10:05:07 GMT

Detect the OnCollision event in an eventTriggeredSource activity and then use a StatsCollector to collect the data.

Re: Collision problem

a9080109 — Sat, 09 Apr 2022 16:14:31 GMT

But what I want to do is I want to give the collision time like five seconds, can it be done with PF?

Re: Collision problem

jason_lightfoot_adsk — Sat, 09 Apr 2022 21:08:09 GMT

I don't understand your sentence.

Re: Collision problem

a9080109 — Sun, 10 Apr 2022 12:55:33 GMT

i mean when the collision happens i want to use pf to give the whole process a delay time

For example I only want the collision to end after five seconds, is this controllable?

Re: Collision problem

a9080109 — Tue, 12 Apr 2022 13:21:50 GMT

@Jason Lightfoot

Can you tell me if you have any good suggestions?

Re: Collision problem

jason_lightfoot_adsk — Tue, 12 Apr 2022 13:37:45 GMT

You know:

how far apart the transporters are
the size of the spheres
the velocities.

so from that you could calculate the duration. If you want to have the collision last for a certain time then you'll need to solve it using basic algebra.

Re: Collision problem

a9080109 — Tue, 12 Apr 2022 13:42:29 GMT

Can you provide a case? For example 1 second?

Re: Collision problem

jason_lightfoot_adsk — Tue, 12 Apr 2022 14:04:22 GMT

It's time = distance/speed - you should be able to manage that.

Re: Collision problem

a9080109 — Tue, 12 Apr 2022 15:09:11 GMT

I don't understand how do I bring data into flexsim

Re: Collision problem

jason_lightfoot_adsk — Wed, 13 Apr 2022 11:10:32 GMT

It occurs to me now that you might just want to hold the AGVs for 5 seconds before they continue once the collision event has been detected - and not that you want the spheres to be colliding for exactly 5 seconds - is that right?

Re: Collision problem

a9080109 — Wed, 13 Apr 2022 14:55:04 GMT

yap is to stay in that state for five seconds, after which it will continue to execute the task

Re: Collision problem

jason_lightfoot_adsk — Wed, 13 Apr 2022 15:44:58 GMT

Okay so you should probably just stop the AGVs for the 5 seconds when you detect a new collision. If you have a problem with double detection then you'll need to record that the two AGVs are in a collision already and test for this when the second firing of the collision event happens.

Re: Collision problem

a9080109 — Wed, 13 Apr 2022 15:58:25 GMT

I don't know very well!! Could you please give me an example?

Re: Collision problem

jason_lightfoot_adsk — Wed, 13 Apr 2022 23:19:20 GMT

agv-avoidance-rc_jl.fsm

Re: Collision problem

a9080109 — Mon, 18 Apr 2022 08:32:09 GMT

@Jason Lightfoot

I would like to ask if I am going to add other objects now, how can I adjust my model to make it run smoothly. Also in the TRAVEL settings, can I do it in another way? Instead of using CURRENT.DEST to specifyagv-avoidance-rc-jl.fsm

Re: Collision problem

jason_lightfoot_adsk — Tue, 19 Apr 2022 10:25:30 GMT

Of course - add the other agvs to the same process flow. See instanced process flows. You already know how to create travel tasks - the example just used a label for ease.

Re: Collision problem

a9080109 — Wed, 20 Apr 2022 16:11:04 GMT

@Jason Lightfoot

I used the case you provided to create a similar activity in general pf, but he doesn't seem to have a way to delay like in the case, what's wrong with me?0421.fsm

Re: Collision problem

a9080109 — Wed, 20 Apr 2022 16:13:53 GMT

@Jason Lightfoot

In addition, I also want to ask if I can control which side will back up when a collision occurs? As far as this model is concerned, the car on the left is backing up

Re: Collision problem

jason_lightfoot_adsk — Mon, 25 Apr 2022 15:13:17 GMT

You're using the term 'current' in a general process flow. It doesn't mean the same thing there. You need to write a pointer to the agv on the token using the event triggered source.