Team 968 Traction Control Demo

[kiettyyyy]

Here's our traction control demo that we performed a few weeks ago.

http://www.youtube.com/watch?v=3kszG...e=channel_page

[Pjohn1959]

Nice side by side comparison. That just goes to show the importance of having traction control this year.

[Qbranch]

Very cool. Nice implementation, well documented results.

Kudos, programmer... whomever you are.

-q

[kiettyyyy]

Originally Posted by Qbranch

Very cool. Nice implementation, well documented results.

Kudos, programmer... whomever you are.

-q

thanks.

[David Brinza]

Good job, RAWC! I look forward to scouting you in San Diego.

Effective traction control coupled with a good ball dumping system will make your team "devastating".

[ehochstein]

The only reason I personally do not like traction control is because of pushing other robots, or your robot getting pushed, then you are kind of screwed. I think the best way of performing this year will be a team who has traction control, but can still turn it off if they need to.

and Great job! We tried doing traction control but we decided against it.

[AdamHeard]

Originally Posted by Wiifi

The only reason I personally do not like traction control is because of pushing other robots, or your robot getting pushed, then you are kind of screwed. I think the best way of performing this year will be a team who has traction control, but can still turn it off if they need to.

and Great job! We tried doing traction control but we decided against it.

why turn it off?

[ehochstein]

Originally Posted by AdamHeard

why turn it off?

So it is easier to defend from other robots pushing you, and to push other robots.

If you completely stop moving your robot you're still going to have those 5 seconds where the robot will start moving slowly and gradually pick up speed.

[AdamHeard]

Originally Posted by Wiifi

So it is easier to defend from other robots pushing you, and to push other robots.

If you completely stop moving your robot you're still going to have those 5 seconds where the robot will start moving slowly and gradually pick up speed.

A well implemented traction control system will decelerate and accelerate substantially faster. Turning it off would make it worse.

[Lil' Lavery]

Originally Posted by Wiifi

So it is easier to defend from other robots pushing you, and to push other robots.

If you completely stop moving your robot you're still going to have those 5 seconds where the robot will start moving slowly and gradually pick up speed.

Traction control isn't just slowing your acceleration. When effectively implemented, like it was by 968, it will increase your acceleration. Just look at the video 968 posted.

[kiettyyyy]

Originally Posted by Wiifi

So it is easier to defend from other robots pushing you, and to push other robots.

If you completely stop moving your robot you're still going to have those 5 seconds where the robot will start moving slowly and gradually pick up speed.

If you implemented a system where the 'bot increases the power output in relation to time, you'd get that effect.

If you have a traction algorithm that increases/decreases power output in relation to the amount of wheel slip, you would actually be able to accelerate and decelerate much faster; which, in turn, makes it easier to "defend from other robots pushing you".

Also, with TCS, you'd have a better chance at pushing objects on the field.

If you grab a stack of books and have your robot push against the stack while running your wheels at full speed, you'll move no where in a hurry. On the other hand, with TCS, you'd push the stack away at the quickest rate your wheels can spin without slipping.

[ehochstein]

Originally Posted by kiettyyyy

If you implemented a system where the 'bot increases the power output in relation to time, you'd get that effect.

If you have a traction algorithm that increases/decreases power output in relation to the amount of wheel slip, you would actually be able to accelerate and decelerate much faster; which, in turn, makes it easier to "defend from other robots pushing you".

Also, with TCS, you'd have a better chance at pushing objects on the field.

If you grab a stack of books and have your robot push against the stack while running your wheels at full speed, you'll move no where in a hurry. On the other hand, with TCS, you'd push the stack away at the quickest rate your wheels can spin without slipping.

Ah, thanks I understand now I was thinking of just a programmed in "increase speed for 5 seconds then steady the speed" so without sensors.

[R.C.]

The Vid is like down or not available, could someone please re-upload this.

EDIT EDIT: IT WORKS NOW, I DUNNO WHY?

[dani190]

Originally Posted by Pjohn1959

Nice side by side comparison. That just goes to show the importance of having traction control this year.

it is quite nice... but for our team, we just have a really good driver and he manages without the traction control... Seems to actually work better for us.

[keehun]

We need to start a repository for all these Traction Controls. So many teams have done a wonderful job =D