Demonstrate model matching control using a single integrator plant.

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See also FResp, Plot2D
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Contents

Desired model time constant
Matching gains
Generate Bode plots
Add the model
Plot

%---------------------------------------------------------------------------
%   Copyright (c) 2003, 2014 Princeton Satellite Systems, Inc.
%   All rights reserved.
%---------------------------------------------------------------------------

Desired model time constant

%----------------------------
tau = .1;

Matching gains

%---------------
gain = [0.1 1 10];

Generate Bode plots

%--------------------
w    = logspace(-2,2);
m    = zeros(length(gain),length(w));
p    = m;
lg   = cell(1,length(gain)+1);
for j = 1:length(gain)
  k                 = gain(j);
  num               = [tau 1+k];
  den               = [tau k*tau + 1 k];
  [m(j,:), p(j,:)]  = FResp(num,den,w);
  lg{j}             = sprintf('K = %4.1f',k);
end

Add the model

%--------------
j                = 4;
num              = 1;
den              = [tau 1];
[m(j,:), p(j,:)] = FResp(num,den,w);
lg{end}          = 'model';

Plot

%-----
yL = ['Mag    (db)'; 'Phase (rad)'];
Plot2D(w,[20*log10(m);p],'Frequency (rad/s)',yL,'Bode Plot','xlog',['1:4';'5:8'])
legend(lg)

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% $Date$
% $Id: f3457b5184bd1e1b9db8e05b609fc111554f8891 $