fig14.asv

realize analysis and design for computer-controlled system

% Generates Fig 1.4 
% 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

block14;

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

lw=0.9;
Ms=9;
a=0.5;
b=0.5;
h=1;
%
clf;
subplot(2,2,1);
set_param('block14/Step','time','1');
opt=simset('Outputpoints','specified');
[t,x,y]=sim('block14',[0:h:10],opt);
hpl=plot(t,y(:,1),'m.');
set(hpl,'MarkerSize',Ms)
hold on
[t,x,y]=sim('block14',[0, 10]);
[ts,us]=stairs(t,y(:,3));
plot(t,y(:,2),'k',ts,us,'k--','Linew',lw);
ylabel('Output','Fontsize',9,'Fontname','NewCenturySchlbk');
axis([0,10,0,1.2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10]);
set(gca,'ytick',[0 1]);
text(-2.2,1.15,'b)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
subplot(2,2,2);
set_param('block14/Step','time','1.25');
[t,x,y]=sim('block14',[0:h:10],opt);
hpl=plot(t,y(:,1),'m.');
set(hpl,'MarkerSize',Ms)
hold on
[t,x,y]=sim('block14',[0, 10]);
[ts,us]=stairs(t,y(:,3));
plot(t,y(:,2),'k',ts,us,'k--','Linew',lw);
ylabel('Output','Fontsize',9,'Fontname','NewCenturySchlbk');
axis([0,10,0,1.2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10]);
set(gca,'ytick',[0 1]);
text(-2.2,1.15,'c)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
subplot(2,2,3);
set_param('block14/Step','time','1.75');
[t,x,y]=sim('block14',[0:h:10],opt);
hpl=plot(t,y(:,1),'m.');
set(hpl,'MarkerSize',Ms)
hold on
[t,x,y]=sim('block14',[0, 10]);
[ts,us]=stairs(t,y(:,3));
plot(t,y(:,2),'k',ts,us,'k--','Linew',lw);
ylabel('Output','Fontsize',9,'Fontname','NewCenturySchlbk');
xlabel('Time','Fontsize',9,'Fontname','NewCenturySchlbk');
axis([0,10,0,1.2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10]);
set(gca,'ytick',[0 1]);
text(-2.2,1.15,'d)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
%
subplot(2,2,4);
set_param('block14/Step','time','2');
[t,x,y]=sim('block14',[0:h:10],opt);
hpl=plot(t,y(:,h),'m.');
set(hpl,'MarkerSize',Ms)
hold on
[t,x,y]=sim('block14',[0, 10]);
[ts,us]=stairs(t,y(:,3));
plot(t,y(:,2),'k',ts,us,'k--','Linew',lw);
ylabel('Output','Fontsize',9,'Fontname','NewCenturySchlbk');
xlabel('Time','Fontsize',9,'Fontname','NewCenturySchlbk');
axis([0,10,0,1.2]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10]);
set(gca,'ytick',[0 1]);
text(-2.2,1.15,'e)','Fontname','NewCenturySchlbk','Fontsize',9)
drawnow;
close_system('block14',0)