Tests the MWA pitch loop for the ComStar satellite.

If requested save controller matrix to a file (PMWA) in the ComStar folder.

------------------------------------------------------------------------- See also PtchLoop, ComStar, WriteCM -------------------------------------------------------------------------

Contents

%--------------------------------------------------------------------------
%   Copyright (c) 1996 Princeton Satellite Systems, Inc.
%   All rights reserved.
%--------------------------------------------------------------------------
%   Since version 2.
%--------------------------------------------------------------------------

System Parameters

%------------------
inr         = ComStar('MO Inertia');
inrMWA      = ComStar('MWA Inertia');
cMatrices   = 'yes';

Design the pitch and tach loops

%--------------------------------
zeta        = 0.7071;
wN          = 0.2;
tSamp       = 0.25;
zetaPL      = 0.7071;
wNPL        = 0.04;
beta        = 0.0;
PitchLoop(inr(2,2),inrMWA,beta,zeta,zetaPL,wN,wNPL,1,'Z');

Write in C format

%------------------

If requested save and dump the controller matrices

%---------------------------------------------------
if( strcmp(cMatrices,'yes') )
  fPath = fileparts(which(mfilename));
  fID           = fopen(fullfile(fPath,'PMWA.txt'),'w');
  [aM,bM,cM,dM,aP,bP,cP,dP] = PitchLoop(inr(2,2),inrMWA,beta,zeta,zetaPL,wN,wNPL,tSamp,'Delta');
  WriteCM(fID,'A Matrix','fTLAMatrix',reshape(aM',1,length(aM)^2),12,20,3)
  WriteCM(fID,'B Matrix','fTLBMatrix',bM,12,20,3)
  WriteCM(fID,'C Matrix','fTLCMatrix',cM,12,20,3)
  WriteCM(fID,'D Matrix','fTLDMatrix',dM,12,20,3)
  WriteCM(fID,'A Matrix','fPLAMatrix',reshape(aP',1,length(aP)^2),12,20,3)
  WriteCM(fID,'B Matrix','fPLBMatrix',bP,12,20,3)
  WriteCM(fID,'C Matrix','fPLCMatrix',cP,12,20,3)
  WriteCM(fID,'D Matrix','fPLDMatrix',dP,12,20,3)
  disp('MWA Tach Loop Matrices')
  disp(aM);
  disp(bM);
  disp(cM);
  disp(dM);
  disp('MWA Pitch Loop Matrices')
  disp(aP);
  disp(bP);
  disp(cP);
  disp(dP);
end


%--------------------------------------

MWA Tach Loop Matrices
  -0.081351765720408
   0.081351765720408                   0
  -0.014775720266470
                   0   0.014775720266470
MWA Pitch Loop Matrices
     0
   0.250000000000000
  12.115041494245698
     4.782981248095271e+02

Published with MATLAB® R2019a