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| wcperf | See Also |
Computes upper and lower bounds for the worst-case gain of a linear system subjected to structured, bounded, LFT perturbations. Also computes worst-case structured perturbation of a specified H
Syntax
[deltawc,lowbnd,uppbnd] = wcperf(Mg,uncblk,alpha,npts);
Description
The commandwcperf is associated with the block diagram
where 
has block structure as defined by , which is described via the matrix uncblk. The worst-case performance curve, (
), is defined as
Both lower and upper bounds for are returned as VARYING matrices in lowbnd and uppbnd. Each VARYING matrix is guaranteed to have at least npts values of the independent variable , spread uniformly between 0 and the stability limit.
delta_wc, is the "worst-case" perturbation from with norm equal to the value of alpha. delta_wc has the block-diagonal structure associated with uncblk, and causes the LFT FU (M,wc) to have norm equal to the value of lowbnd associated with the independent variable value = alpha.
See Also
dypert, mu