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

[rb29792]

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

[rb29792]

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