Robust Control Toolbox™

LAPACK reciprocal condition estimator of frd object

Syntax

• r = rcond(x) 
  

Description

rcond(x) is an estimate for the reciprocal of the condition of the frd object x in the 1-norm obtained by the LAPACK condition estimator. rcond operates on x.ReponseData of the x frd at each frequency to construct r. If x is well conditioned, rcond(x) is near 1.0. If x is badly conditioned, rcond(x) is near EPS.

r=rcond(x) returns r as an frd object.

See Also
cond        Calculates condition number with respect to inversion

norm        Calculates matrix or vector norm

condest     Calculates a 1-norm condition number estimate

normest     Calculates a matrix 2-norm estimate

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