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Author Topic: Instability of My climbing Robot  (Read 2148 times)

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Offline wise318Topic starter

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Instability of My climbing Robot
« on: December 06, 2008, 07:47:21 AM »
I built a climbing robot using suction pad and dc motor. However i Find the robot is instable.. It sometimes overshoot on certain steps and I have no Idea is it due to PID controller. I have not tune the PID as I am not familiar. May I know what is consider high PID and how to optimise it. And how PID controller affecct the perfromance of my Robot.

TG Programming for motor
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Offline wise318Topic starter

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Re: Instability of My climbing Robot
« Reply #1 on: December 06, 2008, 10:03:20 AM »
Anyway My robot is Something like this with 2 axis X and Y are driven by motor to rotate the suction pad to the ground or the ceiling. The axis can be adjusted




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Offline Admin

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Re: Instability of My climbing Robot
« Reply #2 on: December 10, 2008, 03:58:09 AM »
Quote
It sometimes overshoot on certain steps and I have no Idea is it due to PID controller. I have not tune the PID as I am not familiar.
Overshoot is caused by a gain set too high. Look at your code and reduce the gain until it stops overshooting.

Google around for PID controllers to learn more.
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