fspec
spectral factorization of continuous time dynamical systems
Syntax
gm = fspec(g)
Arguments
- g
a continuous time linear dynamical system.
- gm
a continuous time linear dynamical system.
Description
returns gm with gm and gm^-1 stable such that:
g = gtild(gm)*gm
gtild(gm) returns a state-space representation of gm(-s)'.
g is inversible.
Imaginary-axis poles are forbidden.
gtild(g)=g (poles and zeros of g are symmetric wrt imaginary axis).
g(inf) is positive definite.
Examples
a=-1000; b=5; c=5; d=5; sl=syslin('c',a,b,c,d); fspec(sl)
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