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dmmarsya.m
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1999-04-29
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# Copyright (C) 1996 A. Scottedward Hodel
#
# This file is part of Octave.
#
# Octave is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# Octave is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with Octave; see the file COPYING. If not, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
page_screen_output = 1;
opt = 0;
QUITOPT = 7;
while (opt != QUITOPT)
opt = menu("Marsyas interface update demo:", ...
"run Marsyas on the magnetically suspended ball example", ...
"load continuous time marsyas example system", ...
"load discrete-time marsyas example system", ...
"bode plot of loaded system (MIMO)", ...
"bode plot of loaded system (SISO)", ...
"Design example", ...
"Quit");
if(opt == 1)
cmd = "system(""marsyas mag1d.mar"")";
run_cmd
cmd = "system(""marplot -i"")";
run_cmd
elseif(opt == 2)
cmd = "ballsys = margetsys();";
run_cmd;
cmd = "sysout(ballsys);"
run_cmd
elseif(opt == 3)
cmd = "ballsys = margetsys(""disc"");";
run_cmd
cmd = "sysout(ballsys);"
run_cmd
elseif(opt == 4)
cmd = "bode(ballsys);";
run_cmd
elseif(opt == 5)
cmd = "bode(ballsys,[],1,1);";
run_cmd
elseif(opt == 6)
if(!exist("ballsys"))
warning("You didn't load a system yet (option 2 or 3)");
else
disp("Design LQG controller");
cmd = "sysout(ballsys)";
run_cmd
disp("add noise inputs to system...")
if(ballsys.n)
disp("continuous system:")
cmd = "ballsys1 = sysapp(ballsys,eye(ballsys.n));";
else
disp("discrete system:")
cmd = "ballsys1 = sysapp(ballsys,eye(ballsys.nz));";
endif
run_cmd
cmd = "sysout(ballsys1)";
run_cmd
disp("Notice the two additional inputs, u_2, and u_3. These are the ");
disp("""entry points"" for the gaussian noise disturbance.");
disp(" ");
disp("We'll design the controller to use only position feedback:")
cmd = "ballsys1=sysprune(ballsys1,1,[]);";
run_cmd
cmd = "sysout(ballsys1)";
run_cmd
disp("Now design an LQG controller: Sigw: input noise")
Sigw = eye(2)
disp("Now design an LQG controller: Sigv: measurement noise")
Sigv = eye(rows(ballsys1.c))
disp("State and input penalties:")
Q = eye(2)
R = 1
disp("Controlled input is input 1");
cmd="Ksys = lqg(ballsys1,Sigw,Sigv,Q,R,1);";
run_cmd
disp("sysout(Ksys);");
sysout(Ksys);
disp("marsyas conversion: output in scalar form:")
cmd = "maroutsys(Ksys, ""ball_controller"",""scalar"");";
run_cmd
disp("here's the output file:")
prompt
system("more ball_controller.mar");
disp("marsyas conversion: output in state space form: (default option;")
disp("the ""ss"" in the command below is not needed)")
cmd = "maroutsys(Ksys, ""ball_controller_ss"",""ss"");";
run_cmd
disp("here's the output file:")
prompt
system("more ball_controller_ss.mar");
disp("marsyas conversion: output in transfer function form:")
cmd = "maroutsys(Ksys, ""ball_controller_tf"",""tf"")"
run_cmd
disp("here's the output file:")
prompt
system("more ball_controller_tf.mar");
endif
endif
endwhile