svdfrsp (Model Predicitve Control Toolbox)

Calculates the singular values of a varying matrix, for example, the frequency response generated by mod2frsp.

Syntax

[sigma,omega] = svdfrsp(vmat)

Description

vmat is a varying matrix which contains the sampled values F(

₁), ... , F(

N) of a matrix function F(

If the smaller dimension of F(

i) is m, and if

i), . . . ,

i) are the singular values of F(

i), in decreasing magnitude, then the output sigma is a matrix of singular values arranged as follows:

The output omega is a column vector containing the frequencies

₁ , . . . ,

Example

See mod2frsp, varying format for an example of the use of this function.