Overview
Comment:Now has u0 input vector
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SHA3-256: 30eb07fb3973b7d53e08f7c52afd4077f6006fa404202d8de25e6c8556d63146
User & Date: gawthrop@users.sourceforge.net on 1996-08-15 11:53:44
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Context
1996-08-15
11:54:32
Now has optional initial condition. check-in: 681ad2aea9 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
11:53:44
Now has u0 input vector check-in: 30eb07fb39 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
11:52:42
Now creats a number of versions:
fr complex frequency response
lmfr log magnitude of fr
lpfr phase of fr
nyfr real and imag parts - Nyquist style
nifr Nichols style. check-in: d6652c7f68 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
Changes
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Modified mttroot/mtt/bin/trans/m/dm2fr.m from [5190b9bd8e] to [fe21ca30b0]. 

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function  fr = dm2fr(A,B,C,D,E,W,u0)
% fr = dm2fr(A,B,C,D,E,W,u0)
% Descriptor matrix to frequency response.
% A,B,C,D,E - descriptor matrices
% W vector of frequency points
% u0 input gain vector: u = u0*unit phasor

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$



% %% Revision 1.1  1996/08/10 14:11:28  peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[Ny,Nu] = size(D);
[Ny,Nx] = size(C);
N = length(W);

if nargin<7
  u0 = zeros(Nu,1);
  u0(1) = 1;
end;

fr = zeros(N,Ny);
i = 0;
for w = W
  i = i+1;
  FR = C*( (E*j*w - A) \ B ) + D;
  fr(i,:) = FR';
end;


























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function  fr = dm2fr(A,B,C,D,E,W,u0)
% fr = dm2fr(A,B,C,D,E,W,u0)
% Descriptor matrix to frequency response.
% A,B,C,D,E - descriptor matrices
% W vector of frequency points
% u0 input gain vector: u = u0*unit phasor

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.2  1996/08/15 10:24:28  peter
% %% Includes u0 argument.
% %%
% %% Revision 1.1  1996/08/10 14:11:28  peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[Ny,Nu] = size(D);
[Ny,Nx] = size(C);
N = length(W);

if nargin<7
  u0 = zeros(Nu,1);
  u0(1) = 1;
end;

fr = zeros(N,Ny);
i = 0;
for w = W'
  i = i+1;
  FR = C*( (E*j*w - A) \ B ) + D;
  fr(i,:) = FR';
end;

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