Hello, I'm starting the desing of a sumo robot to play on 2007 contests. I've been reading for several weeks on internet and looks like people doesn't ofter use absolute encoders to check movement of motors. So I have some questions as I feel like absolute enconders are a must.
For example, I will have servos to control the direction of the wheels. How can I check the position of the wheels without absolute encoders? When I give a turn order from the controller how can I know that the order has been executed and the motor finished turning? I expect to not move until the direction is set.
The presency sensor will be fit on a rotating circle on the top of the robot. Now again I don't know how to check the end of the order gived to the motor. How do you manage this problems? As far as I read I don't find a solution without absolute encoders.
P.D: I think on absolute encoders rather than incremental ones to avoid loosing pulses in case of fast turnings like the ones present in a collision or things like that. Is much easier to put incremetal rather than absolute encoders?
Thanks for your help