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randpert 327
randpert
Syntax
[pert] = randpert(blk, {sys,sfreq,complex,pnorm})
Parameter List
Inputs: blk block structure (refer to mu function documentation).
(matrix)
Keywords: sys Boolean. Specifies that pert is a dynamic system. Default
= !sys, i.e. pert is a matrix.
sfreq Scalar valued. If a dynamic system is specified, sfreq is the
frequency with significant phase. Units are Hertz. Default
=1.0.
complex Boolean. Specifies that pert is complex valued. Default =
1.
pnorm Scalar valued. Specifies the norm of the resulting system.
Default = 1.
Outputs: pert Constructed perturbation
Description
Creates a perturbation of the structure specified by blk. By default this is a complex
valued matrix. The sys keyword will create an allpass Dynamic System. sfreq is used
to specify a frequency (in Hertz) where there is significant phase in the system.
This function is used to construct random perturbations, the effects of which can be
studied by simulation. Dynamic perturbations are appropriate for simulating the effects
of unmodeled dynamics. In such cases, the crossover frequency, or a frequency where mu
is large, are good choices.