Online Estimation Using Superposition Mode
Open another model, scdfreeSuperposition. In this model, the Frequency Response
Estimator block is configured for perturbation only output. In this configuration, you
can position to block outside of the control loop. When the block is idle, the perturbation
signal entering the Sum block is 0, so the loop is unaffected.
mdlSP = 'scdfreSuperposition';
open_system(mdlSP);
Online Estimation of Frequency Responses of a Nonlinear Plant