ml_sigmaplot
Sigma plot of error transfer functions in a given interval.
Contents
Syntax
ml_sigmaplot(sys, [], wmin, wmax, n) ml_sigmaplot(sys, [], wmin, wmax, n, [], lspec)
ml_sigmaplot(sys, rom, wmin, wmax, n) ml_sigmaplot(sys, rom, wmin, wmax, n, bound) ml_sigmaplot(sys, rom, wmin, wmax, n, bound, lspec)
Description
This function can be used to plot the error
sigma_max(G(j*w) - H(j*w))
in the interval j*[10^wmin, 10^wmax] at n points, where G is the transfer function of the system sys and H is the transfer function of the system rom. If no rom system is given, the plot shows the magnitude of G.
Input
sys - struct, containing a standard/descriptor/second-order system rom - struct, containing a standard/descriptor/second-order system, if empty only the magnitude of sys is computed wmin - integer, lower exponent of the interval wmax - integer, higher exponent of the interval n - positive integer, number of points for computation bound - nonnegative scalar, absolute error bound, which shall be plotted, otherwise is set empty lspec - character array, determining the color and line specification of the plot
Output
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See Also