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pid to control a sawtooth waveform as output to system to control linear motion

Hey Guys,

 

I know the topic name doesnt sound right. I am very new to LabView so needed some help. My task is to take the output voltage from a capacitance gauge that is measuring the displacement of a linear 1-D motion rectangular block, and compare it with the set displacement value and pass the error into a PID controller. The ouput of the pid controller needs to be fed into a signal generator that creates a sawtooth like waveform that is fed into an amplifier and consequently passed on to a couple of piezoelectrics(like a piezomotor) that achieve the 1-D motion of this rectangular box. How do I go about doing this? 

 

Thanks,

RB

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Sorry, I guess I posted this in the wrong group.

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