evalRequirement

Class: sdo.requirements.PZSettlingTime
Package: sdo.requirements

Evaluate settling time bound on linear system

Syntax

c = evalRequirement(req,lin_sys)


Description

c = evalRequirement(req,lin_sys) evaluates whether the poles of a linear system satisfies the specified settling time bound.

Input Arguments

req	sdo.requirements.PZSettlingTime object.
lin_sys	Linear system (tf, ss, zpk, frd, genss, or genfrd).

Output Arguments

c

Signed distance of the real component of each system pole to the bound, if the Type property of req is <= or ==. Negative values indicate that the bound is satisfied while positive values indicate that the bound is violated. If ==, values other than 0 indicate that the bound is violated. Pole locations such that minimizing the values minimizes the settling time, if the Type property of req is 'min'.

Examples

Evaluate settling time requirement.

 req = sdo.requirements.PZSettlingTime;
 sys = tf(0.5,[1 3 3 1]);
 c = evalRequirement(req,sys);

c is positive, which indicates that the system does not satisfy the settling time requirement.