fig913.m

realize analysis and design for computer-controlled system

% Generates Fig 9.13
% Computer Controlled Systems (3rd ed)
% Author: B. Wittenmark
% Last edit: 1997-07-09
% Copyright (c) 1996 by K. J. 舠tr鰉, B. Wittenmark and
% Department of Automatic Control, Lund Institute of
% Technology, Lund, Sweden

newplot;
set(gcf,'PaperUnits','centimeters','PaperPosition',[2 2 13 10])
set(gcf,'Units','centimeters','position',get(gcf,'PaperPosition'))
 
block913;

lw=0.9;
h=1;
K=0.8;
d=0.2;
clf;
%
[t,x,y]=sim('block913',[0, 75]);
subplot(3,1,1);
hpl=plot(t,y(:,2),'m--',t,y(:,1),'m.','Linew',lw);
axis([0,75,0,2]);
%title(['Fig 9.13']);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 50]);
set(gca,'ytick',[0 1]);
set(hpl,'MarkerSize',6)
ylabel('Output','Fontname','NewCenturySchlbk','Fontsize',9)
text(-7,2,'(a)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
K=1.2;
%
[t,x,y]=sim('block913',[0, 75]);
subplot(3,1,2);
hpl=plot(t,y(:,2),'m--',t,y(:,1),'m.','Linew',lw);
axis([0,75,0,2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 50]);
set(gca,'ytick',[0 1]);
set(hpl,'MarkerSize',6)
ylabel('Output','Fontname','NewCenturySchlbk','Fontsize',9)
text(-7,2,'(b)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
K=1.6;
%
[t,x,y]=sim('block913',[0, 75]);
subplot(3,1,3);
hpl=plot(t,y(:,2),'m--',t,y(:,1),'m.','Linew',lw);
axis([0,75,0,2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 50]);
set(gca,'ytick',[0 1]);
set(hpl,'MarkerSize',6)
xlabel('Time','Fontname','NewCenturySchlbk','Fontsize',9)
ylabel('Output','Fontname','NewCenturySchlbk','Fontsize',9)
text(-7,2,'(c)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;