Refactoring PID AutoTune

[viSci]

The current version of the PID toolkit for LV 2009 is not much different from the original dating back to the 1990's when it was first written by Gary Johnson.

It is very clever and highly convoluted and would be difficult to use in an RT application. I am thinking of ways to decouple the PID core from the autotuning

procedure. My first thought is to use NSV references to tap into the PID PV,SP,Output and PID parameters. This way the autotune client software could run on any PC

and would be consistant with the PID Real-Time Function Block. Would like to hear from other who have thought about this, particularly anyone from the NI systems group

who may already be planning this.