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ii_cost

Purpose

Compute the quadratic and log-least-squares cost functions comparing two sets of frequency response functions.

Syntax

[cst] = ii_cost(xf,xe)

Description

For two sets of FRFs H and Ĥ, the quadratic cost function is given by

(10.30)

and the log-least-square cost function by

(10.31)

For sets xf and xe stored using the xf format , ii_cost computes both those costs which are used in identification and model update algorithms (see section 3.2.3).

See also

id_rc, up_ixf