A comparison of nonlinear control performance assessment techniques for hammerstein-wiener processes

Assessing the quality of industrial control loops is an important routine auditing task for the control engineer. However there are complications when considering nonlinear control loops, where one must consider both the type of nonlinearity, and the precise structure of the loop. This paper shows that certain nonlinear CPA strategies fail when faced with disturbance signals that are immediately passed through a nonlinearity, whereas others, admittedly more computationally demanding, are immune to this noise structure.