Control of a digital stepper motor

[insitutotect22]

Hello!

Basically, I am building a PID controller whose output must be pulses that move a stepper motor linearly. Does anybody here could share some codes or iformation about how to do it?

[GerdW]

Hi institutotect,

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@insitutotect22 wrote:

Basically, I am building a PID controller whose output must be pulses that move a stepper motor linearly. Does anybody here could share some codes or iformation about how to do it?

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Basically you need a code to read your process value (pv) for PID input, a PID function to calculate an output value and a code to drive another DAQ device to output your pulses. What have you tried so far and where are you stuck?

When you use a PID, which generates a changing output value, then your stepper motor will not move "linearly"…

[insitutotect22]

I already have the angle input from a rotary incremental encoder.

This PID will control an inverted pendulum that can move only in x axis

My ideia is to built a general PID controller and adjust the gains as I analyse the experiment. Do you think it make sense?

My doubt now is how to link the ouput from de PID with the stepper motor.

Thanks!  

[GerdW]

Hi insitutotect,

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@insitutotect22 wrote:

My doubt now is how to link the ouput from de PID with the stepper motor.

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What does your motor driver expect?

How is the motor connected to your computer?

You didn't tell any details so far…