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Unread 25-01-2005, 13:27
Chet Urata Chet Urata is offline
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Join Date: Jan 2005
Location: Hawaii
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Re: Hall Effect Sensor.

Thanks to all who replied!

First, thanks for the info on the motors. Armed with your information, we will check ours to see if they get the same results.

Regarding Mr. McLeod's comments, good example! You are right about the double error. You made me realize that the accelerometer combined with the gyro would help in the situation you mentioned.

Regarding Mr. Skierkiewicz' comments, while you also are correct, I wasn't clear in that I am not against using the encoders but was wondering if they wouldn't be better used - if you only have two - with one on each side of the vehicle. With the accelerometer and gyro you should then be able to tell direction. Slippage, of course, nullifies the encoders, which might happen if you are being pushed opposite the direction of your motors.

I could be wrong, but it seems to me that with only two encoders plus the gyro and the accelerometer, you would get more information with the encoders on different sides than you would by mounting both on the same side. With mounting on opposite sides, you can count teeth on both sides, yielding distance and difference in speed between the two sides (again, not counting slippage).

c h e t !