www.gusucode.com > ident 案例代码 matlab源码程序 > ident/ReturnNonlinearityDetectionTestQuantitiesExample.m

    %% Return Nonlinearity Detection Test Quantities
% Load the estimation data.

% Copyright 2015 The MathWorks, Inc.

load(fullfile(matlabroot, 'toolbox', 'ident', 'iddemos', 'data','narendralidata'))

%%
% Construct an |iddata| object using the estimation data.
z = iddata(u,y1,1);

%%
% Specify the model orders and delays.
orders = [1 1 2];

%%
% Detect nonlinearities in the data, and determine the test quantities behind
% the evaluation.
[NLHyp,NLValue,NLRegs,NoiseSigma,DetectRatio] = isnlarx(z,orders);