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- ## Copyright (C) 1996 Auburn University. All Rights Reserved
- ##
- ## 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, 59 Temple Place, Suite 330, Boston, MA 02111 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 = sysappend(ballsys,eye(ballsys.n));";
- else
- disp("discrete system:")
- cmd = "ballsys1 = sysappend(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
-