Documentation of contth

Global Index (short | long) | Local contents | Local Index (short | long)

Function Synopsis

[a,b,c,d]=contth(ad,bd,cd,dd,T,flag)

Help text

CONTTH Is an auxiliary function for eta2ss and thss2th
   [a,b,c,d] = contth(ad,bd,cd,dd,T,flag)

Cross-Reference Information

Listing of function contth

function [a,b,c,d]=contth(ad,bd,cd,dd,T,flag)

%   L. Ljung 10-2-1990
%   Copyright (c) 1986-98 by The MathWorks, Inc.
%   $Revision: 2.3 $  $Date: 1997/12/02 03:43:41 $

if flag
if exist('minreal'), eval('[ad,bd,cd,dd] = minreal(ad,bd,cd,dd);');
else, error('The command does not handle multioutput, continuous time ARX-models without the CONTROL SYSTEMS TOOLBOX. See contth.m!'),end
end
[m,n] = size(ad);
[m,nb] = size(bd);
s = real(logm([[ad bd]; zeros(nb,n) eye(nb)]))/T;
a = s(1:n,1:n);
b = s(1:n,n+1:n+nb);
c=cd;d=dd;