Encoders and Rover Wheels

[rsisk]

The only ting we're using encoders for is detecting slipping wheels. The actual navigation is being handled by a combination of vision processing(for obstacle avoidance) and inertial nav(for absolute position)

Could you elaborate on what you mean by internal nav?

[kamocat]

I believe it means the robot is recording its positional coordinates internally, and these coordinates correspond to a certain point on the field.

[Alan Anderson]

Originally Posted by nathanww

The actual navigation is being handled by a combination of vision processing(for obstacle avoidance) and inertial nav(for absolute position)

Originally Posted by rsisk

Could you elaborate on what you mean by internal nav?

Nathan used the word "inertial", not "internal". Inertial navigation uses accelerometers and yaw rate sensors to figure out where the robot is based on where it was when it was reset/calibrated and what accelerations it has been subject to.

[Matt C]

FYI
http://forums.usfirst.org/showthread.php?t=10963

[EricS-Team180]

In 2004 we built an omni-wheeled robot and included a pair of small, plastic, rover omni-wheels to measure x and y chassis movement on the field. The results were mixed. In the end, we decided that those plastic wheels were, sometimes, slipping on the carpet. This year we're going to include one rover wheel. But, right now the plan is to use a wheel material with some grip.