To inject a fixed step sinestream into the model for frequency response estimation, on the
Input Signal drop-down list, select Fixed Sample Time Sinestream.In the Specify fixed sample time dialog box for the sinestream signal, specify a Sample
time of 2e-7 seconds.Click OK.In the Create sinestream input with fixed sample time dialog box, configure the
parameters of the sinestream signal.To specify the frequency units for estimation, in the Frequency units drop-down list,
select Hz.7 PID Controller Tuning