I have worked quite a bit with PID loop control and have quite a few vi's that will
do automated control of servo valves. Also have a good tuning/calibration utility
for the PID parameters to optimize your control profile.
I did a MS in physics at Waterloo with Gunter Scholz and Jim Corbett and currently
work at VI Engineering in MI. Send me an e-mail to dscarfe@vieng.com and I will
send you a package of vi's that you may find very useful.
I won't be back at work until Friday or Monday, so expect them sometime early next
week.
Darren Scarfe
George Roter wrote:
> Hello,
>
> I am currently a graduate student at the University of Waterloo in Canada.
> I am currently working on a project to replace an old proprietary control
> system for one of our simulators with
one run by LabView. We have bought
> a PCI-6024E DAQ card for the application that requires analog control of
> a servo-valve given analog input from a pressure transducer and a pre-programmed
> waveform. We are running LabView 5.1.
>
> I have been playing around with simple set-point PID control for this system,
> but the application requires PID control for a continuous waveform and I
> have very little idea of how to accomplish this with the constraints of being
> fairly precise on the frequency of the output (the waveform must be run at
> 1Hz with approximately 100 discertized values) and the amplitude of the output.
> Might anyone have an a general idea of how I can program my way through this
> problem without purchasing the PID Control Toolset (this is not all that
> viable with our grant constraints)? Also, if I was stuck with purchasing
> the process control toolset, would this be sufficient?
>
> Thanks for any replies,
> George