Chief Delphi - tank drive in this years game

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- - tank drive in this years game (http://www.chiefdelphi.com/forums/showthread.php?t=71632)

gblake

10-01-2009 22:15

Re: tank drive in this years game

Quote:

Originally Posted by Siri (Post 796860)

Hysteresis is usually a ferromagnetic term, but in this case it's basically the tendency to over-steer. (official definition: the lag in response exhibited by a body in reacting to changes in the forces...affecting it.). ...

I found a similar but different hysteresis definition here that I like a little better.

Quote:

hysteresis (hĭs'tərē`sĭs), phenomenon in which the response of a physical system to an external influence depends not only on the present magnitude of that influence but also on the previous history of the system.

Blake

pfreivald

10-01-2009 22:17

Re: tank drive in this years game

Ed,

First, I'd like to say that 'Sparks' is a great name for a FIRST mentor. If only you mentored SparX (1126), nothing could stop you!

Second, I'd like to suggest that you not consider how the robot performed in isolation... It may turn well, and even accelerate/brake acceptably (although I would be concerned about losing 50% of my traction by only having half of my wheels driven)... But when it comes to pushing or pinning, you're *doomed* against a robot with four driven wheels. ...not to mention if you get pinned with the casters on the carpet and your driven wheels only on the regolith. This could be very bad for you.

Then again, much of the doom-and-gloom bounced around on this forum turns out to be no big deal, so...

Patrick

Ed Sparks

12-01-2009 22:37

Re: tank drive in this years game

Quote:

Originally Posted by pfreivald (Post 798188)

Second, I'd like to suggest that you not consider how the robot performed in isolation... It may turn well, and even accelerate/brake acceptably (although I would be concerned about losing 50% of my traction by only having half of my wheels driven)... But when it comes to pushing or pinning, you're *doomed* against a robot with four driven wheels. ...not to mention if you get pinned with the casters on the carpet and your driven wheels only on the regolith. This could be very bad for you.

Patrick

Yep, Good point ........

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