Simulink Control Design™ - MathWorks

In the sinestream experiment mode, the block injects separate perturbations at each

frequency you specify in Frequencies. Use Number of settling periods to specify how

long to wait at each frequency before beginning estimation at that frequency. Waiting

allows any transients in the plant response to decay away, improving the accuracy of the

estimated frequency response. Waiting for more periods can improve the accuracy of the

estimation, but also increases the experiment time.

To use the same number of settling periods for all frequencies, specify a positive scalar

value. If you know that the transients settle at different rates over range of frequencies to

estimate, then you can use a vector to specify a different number of settling periods for

each frequency.

For more information about sinestream signals for estimation, see “Sinestream Input

Signals” on page 5-37.

Tunable: Yes

Dependencies

To enable this parameter, in Experiment Mode, select Sinestream.

Programmatic Use

Block Parameter: NumOfSetPeriod

Type: integer, vector of integers

Default: '2'

Number of estimation periods — Number of periods after settling to use for

estimation

4 (default) | integer ≥ 2 | vector of integers

In the sinestream experiment mode, the block injects separate perturbations at each

frequency you specify in Frequencies. Use Number of estimation periods to specify

how many periods of injected signal to use for the estimation at each frequency. Using

more periods can improve the accuracy of the estimation, but also increases the

experiment time.

To use the same number of estimation periods for all frequencies, specify a scalar value

greater than or equal to 2. You can use a vector to specify a different number of settling

periods for each frequency. This approach is useful when you know that your system is

less noisy at some frequencies, or you are less concerned about accuracy at some

frequencies.

16 Blocks — Alphabetical List