piclist 2005\08\14\155208a >
Thread: Servo motor H bridge control
www.piclist.com/techref/io/motors.htm?key=motor
picon face BY : Gerhard Fiedler email (remove spam text)



Bob Blick wrote:

{Quote hidden}

Ah... I missed this. I thought of employing your method of using a
translation table for the PWM, so that a small error will still move the
motor. But there's the (unknown) torque, which even with the initial dead
band removed would require an I part before, so that the voltage can rise
above the needed level to move the motor against the torque. I guess the
integration by the motor is not quite the same as the integration by the
regulator.

I've seen a regulator design that was something like a PI regulator for
position, with the output going into something like a PD regulator for
speed. They claimed faster response times and easier adjustment than the
normal PID position regulators.

Gerhard
<1xvvlvb5du3jo$.2f1rhjimbkeg.dlg@40tude.net> 7bit

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Subject (change) Servo motor H bridge control

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