fig112.m

realize analysis and design for computer-controlled system

% Generates Fig 1.12 
% Computer Controlled Systems (3rd ed)
% Author: B. Wittenmark
% Last edit: 1997-06-21
% Copyright (c) 1996 by K. J. 舠tr鰉, B. Wittenmark and
% Department of Automatic Control, Lund Institute of
% Technology, Lund, Sweden

block112;

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


lw=0.9;
a=1;
b=10;
h=0.1;
opt=simset('Refine',5);
%
[t,x,y]=sim('block112',[0, 10],opt);
clf;
subplot(3,1,1);
plot(t,y(:,3),'k-','Linew',lw);
axis([0,10,-1.2,1.2]);
ylabel('Input','Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 5 10]);
set(gca,'ytick',[-1 0 1]);
text(-1.25,1.,'(a)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
subplot(3,1,2);
[ts,ys]=stairs(t,y(:,1));
plot(ts,ys,'m','Linew',lw);
axis([0,10,-1,1]);
ylabel('Sampl. output','Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 5 10]);
set(gca,'ytick',[-1 0 1]);
text(-1.25,1.,'(b)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
subplot(3,1,3);
plot(t,y(:,2),'k-','Linew',lw);
axis([0,10,-1,1]);
ylabel('Cont. output','Fontsize',9,'Fontname','NewCenturySchlbk');
xlabel('Time','Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 5 10]);
set(gca,'ytick',[-1 0 1]);
text(-1.25,1.,'(c)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%