AGV Blocked

Question

question

Mickael M asked Oct 31 2017 at 7:15 AM Clair A commented Nov 01 2017 at 1:51 PM

AGV Blocked

I have set up a quick model with two AGV that are supposed to transfer pallet between processors. The model works well at the beginning but The processor 2 is blocked after ~560.

Could you tell me if you have an idea on how I can fix the problem ?

Thank you

test-agv01 .fsm

Software Version:

FlexSim 17.2.2

agv agv path agv process flow

test-agv01.fsm (26.1 KiB)

______

Cookie preferences

Your privacy is important to us and so is an optimal experience. To help us customize information and build applications, we collect data about your use of this site.

May we collect and use your data?

Learn more about the Third Party Services we use and our Privacy Statement.

Strictly necessary – required for our site to work and to provide services to you

These cookies allow us to record your preferences or login information, respond to your requests or fulfill items in your shopping cart.

YES

Improve your experience – allows us to show you what is relevant to you

These cookies enable us to provide enhanced functionality and personalization. They may be set by us or by third party providers whose services we use to deliver information and experiences tailored to you. If you do not allow these cookies, some or all of these services may not be available for you.

YES

NO

Customize your advertising – permits us to offer targeted advertising to you

These cookies collect data about you based on your activities and interests in order to show you relevant ads and to track effectiveness. By collecting this data, the ads you see will be more tailored to your interests. If you do not allow these cookies, you will experience less targeted advertising.

YES

NO

Are you sure you want a less customized experience?

We can access your data only if you select "yes" for the categories on the previous screen. This lets us tailor our marketing so that it's more relevant for you. You can change your settings at any time by visiting our privacy statement

Your experience. Your choice.

We care about your privacy. The data we collect helps us understand how you use our products, what information you might be interested in, and what we can improve to make your engagement with Autodesk more rewarding.

May we collect and use your data to tailor your experience?

Explore the benefits of a customized experience by managing your privacy settings for this site or visit our Privacy Statement to learn more about your options.

Answer 1 · 2017-10-31T07:37:55Z

Allister Wilson answered Oct 31 2017 at 7:37 AM Clair A commented Nov 01 2017 at 1:51 PM

Hi Mickael.

The queue at the end of your line is setup to only accept 2 items (batch parameters).

Once it has those 2 items, it blocks the rest of the upstream system.

If you allow items to flow out of that queue freely (to a sink for instance), it all seems to work as expected.

· 3

Mickael M commented · Oct 31 2017 at 1:44 PM

Thanks to your answer.

It seems that I haev a deadlock issue at 1875.22 :

exception: A circular wait has caused deadlock in the AGV network as follows: TaskExecuter1 is requesting allocation of ControlPoint5 ControlPoint5 is allocated by TaskExecuter2 TaskExecuter2 is requesting allocation of ControlPoint4 ControlPoint4 is allocated by TaskExecuter1

0 ·

Clair A Mickael M commented · Nov 01 2017 at 1:51 PM

Hello Mickael,

Yes the deadlock you noticed is quite obvious: AGV 1 wants to go to the right, and AGV 2 to the left:

So you need to change your network or the logic in your model to avoid this situation.

In the attached model 2017-11-01-test-agv01.fsm, as suggested by @Allister Wilson I've deleted the dispatcher so that one AGV is working on the left, the other one on the rigth, so they never run into each other to cause deadlock situations.

I've also activated this option:

that you can find by right clicking on any path > AGV Network Properties, General tab. It will help you understanding who AGVs allocate/deallocate the network as they travel.

2 ·

2017-11-01-test-agv01.fsm (23.6 KiB)

capture.png (46.7 KiB)

capture2.png (1.1 KiB)

Allister Wilson Mickael M commented · Oct 31 2017 at 1:56 PM

Your AGVs are trying to drive through eachother.

Unless you really need the dispatcher, I'd suggest getting rid of it and connecting your processors directly to the AGV you want to use.

1 ·

question

AGV Blocked

1 Answer

Things to know…

question details

Cookie preferences

Strictly necessary – required for our site to work and to provide services to you

Improve your experience – allows us to show you what is relevant to you

Customize your advertising – permits us to offer targeted advertising to you

Strictly necessary – required for our site to work and to provide services to you

Improve your experience – allows us to show you what is relevant to you

Customize your advertising – permits us to offer targeted advertising to you

Are you sure you want a less customized experience?

Your experience. Your choice.

question

AGV Blocked

1 Answer

Things to know…

question details

Related Questions

Cookie preferences

Strictly necessary – required for our site to work and to provide services to you

Improve your experience – allows us to show you what is relevant to you

Customize your advertising – permits us to offer targeted advertising to you

THIRD PARTY SERVICES

Strictly necessary – required for our site to work and to provide services to you

Improve your experience – allows us to show you what is relevant to you

Customize your advertising – permits us to offer targeted advertising to you

Are you sure you want a less customized experience?

Your experience. Your choice.