Quote:
Originally Posted by Justin M.
About the backdriving problem - would it be a bad idea to regulate this by applying current to the motors to keep it from backdriving, like the Victor's brake mode?
|
Two significant misunderstandings:
To use a Victor to keep the motor still, you would need to use a feedback loop and PID control - simply because the force on the arm pivot varies according to load on the arm, and angle of the arm. No load straight up, but max load sticking out paralllel to the floor.
The Victor brake mode will not do anything for you in this case - it is dynamic braking, and its force is linearly proportional to motor speed. Zero speed, zero braking effect. Search on Victor Brake to find the thread that explains this in detial, I think it's from a few years ago.
Don