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Season 13!

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Author Topic: Drivetrain Engineering Notebook 2008  (Read 10714 times)

Kims Robot

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Re: Drivetrain Engineering Notebook
« Reply #15 on: February 04, 2008, 12:37:30 PM »

RE:Drivetrain Curving Right - some ideas to check

Things to check/think about:
#1. See if the robot curves the same way going forward and backward (this determines if its the motor difference or an issue with one side of the drivetrain - if it curves the same way its due to the side, if it curves opposite its due to the motor difference forward & back)

#2. Check the wobbly wheel... which side is it on? is that affecting the drive?

#3. Swap the controlers (left drives right, right drives left), see if anything is different.  Possibly try a joystick? Try the Logitec

#4. Double check the encoder values while up on blocks to see if it is an issue at the output shaft

#5. Try programming so speed controllers always go the same way (swap the polarity on the speed controller motor outputs so that they are the same left and right M+ M-)

#6. Inspect shims and wheels to make sure nothing is rubbing or grinding at all.

#7. Put Weight on the drivetrain, see how it curves, if it gets better?
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Systems Engineer - Draper Laboratory

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dburlone

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Re: Drivetrain Engineering Notebook
« Reply #16 on: February 05, 2008, 11:00:40 AM »

RE:Drivetrain Curving Right - some ideas to check

Things to check/think about:

... ... ... ...

#5. Try programming so speed controllers always go the same way (swap the polarity on the speed controller motor outputs so that they are the same left and right M+ M-)

If using the game pad, perhaps rather than changing in code, just drive with one side of the game pad up and the other side down.  If we know the game pad is calibrated, then this would be a really quick thing to check, as it only involves swapping the terminals on the Motor side.

If you're just using your drive straight routine, I guess just ignore this! :)
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shellshock

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Re: Drivetrain Engineering Notebook
« Reply #17 on: February 13, 2008, 06:24:49 AM »

Tuesday, February 12, 2008

BUMPERS ARE DONE
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