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mkpert 289
mkpert
Syntax
[pertsys] = mkpert(Delta,blk,mubnds,{fselect,pnorm,Hertz})
Parameter List
Inputs: Delta Lower bound perturbation data from mu calculation.
(pdm)
blk block structure (refer to mu function documentation).
(matrix)
mubnds Calculated mu bounds (pdm).
Keywords: fselect Scalar valued. Specifies the frequency for interpolation,
overriding that obtained from mubnds.
pnorm Scalar valued. Specifies the norm of the resulting system,
overriding that calculated from mubnds.
Hertz Boolean. Domain of pdms are in units of Hertz. This
keyword is mandatory. To specify radians/sec use !Hertz.
Outputs: pertsys Constructed perturbation. (Dynamic System)
Description
Creates the rational, stable, system which interpolates the perturbation, Delta, at a
specified frequency. The frequency chosen is the one where the lower bound to mu is
maximum. This corresponds to the smallest destabilizing perturbation. The system has
the assumed structure given by blk.
This function may also be called with a single pdm argument. The result will interpolate
the argument at its first domain value.
This function is used to construct a bad perturbation, the effects of which can be
studied by simulation.