smith predictor

[kmoir200]

Is it possible in Labview to demonstrate the stability criteria [Bode, Nyquist etc.] for the Smith Predictor.  Given that the Smith Predictor block diagram is functionaly a closed loop within a closed loop, but Bode, Nyquist etc are all based on the open loop response of the system.

Sample vi is attached for info.

[SarahMC]

Hi,

It looks like other people have tried similar things before- the following links are all forums with code attached which it may be worth taking a look at?

http://forums.ni.com/t5/LabVIEW/Stability-of-the-Controller/td-p/2624409

http://forums.ni.com/t5/Real-Time-Measurement-and/Smith-Predictor-for-real-Control-System-not-simula...

http://forums.ni.com/t5/LabVIEW/PID-Smith-predictor-simulation-problem/td-p/1080746

Hope this helps!

Sarah