How to let 2 task executers work at the same time?

Question

question

shanice.c asked Oct 06 2021 at 6:16 AM Ryan Clark commented Oct 12 2021 at 9:33 PM

How to let 2 task executers work at the same time?

I'm using crane TaskExecutor and replace some components to pretend it's overhead AGV.

I do this because I need the functionality of the hook of crane task executer. I have tried many ways(use Networknode, use AGV network and simply use S to connect TaskExecuter and loading requirement), and found that if using AGV network, the crane hook will not lift up and down at all, it loads item directly.

The reason I don't like the other 2 methods is because I have curve path(the rail is a loop), use "S" method is unable to control OHAGV is traveling on the route as I want.

For Network node method, I know the path between 2 network nodes can be set as curve, but this method still can not satisfy the hook lifting up an down requirement.

Could anyone give me any suggestion on how to have an overhead AGV traveling from A to B, when it stops at A/B station, let the crane lift up and down at the same time. Thank you.

Software Version:

FlexSim 21.2.0

crane task sequence control

· 1

______

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 · 2021-10-06T06:21:56Z

Joerg Vogel answered Oct 06 2021 at 6:21 AM Joerg Vogel commented Oct 10 2021 at 9:07 AM

It is a customized object. You can add an animation or a kinematic, which do the action of a crane hook. You let execute this action while the Taskexecuter is doing a wait or delay task.

· 2

shanice.c commented · Oct 10 2021 at 2:05 AM

@Joerg Vogel May I ask how to let AGV's position is above the path, but the picking item is under the AGV hook. I have adjusted the position of AGV above it's yellow frame, but this will lead to AGV is higher than path.

And I used kinematic activity to control hook action, but the token stop at load activity. Is it because a shape(hook) cannot used to load item?

kinematic.fsm

0 ·

kinematic.fsm (252.8 KiB)

Joerg Vogel shanice.c commented · Oct 10 2021 at 9:07 AM

You have misunderstood action and result of animation tools in FlexSim. A kinematic move initialized objects. If you initialize a hook, then the hook is animated. If you want to let move a loaded item, you must initialize this item, too.

You have to design three scenarios in an animation: Start, Finish and transition. Start is simple. Finish is an event driven last update of the kinematic. You can do this by a delayed message event. The transition consists of updating the kinematic upon an On Draw trigger or event.

FlexSim graphical expression depends on object frames (yellow) and shape. You can move the frame box, which move shape and loaded item, but you can set a location of the shape in relation to the yellow frame, too. I would place the yellow frame in such a way that a loaded item is at the right location in relation to a rail. Then I adjust the location of the shape.
creating custom objects and animations
A crane is not a suited object to replace an AGV with a hook, because the crane logic moves the immobile structure in relation to the crane hook. It looks like the structure is static, but the source code updates the structure location each time the scene is drawn.

If you want to understand a kinematic, please do it by source code and not by process flow activities. You miss some of the dependencies if you do the logic in given process flow activities or properties.
Kinematic reference

0 ·

question