fig31.m

realize analysis and design for computer-controlled system

% Generates Fig 3.1
% Computer Controlled Systems (3rd ed)
% Author: B. Wittenmark
% Last edit: 1997-06-27
% Copyright (c) 1996 by K. J. 舠tr鰉, B. Wittenmark and
% Department of Automatic Control, Lund Institute of
% Technology, Lund, Sweden

block31;

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

opt=simset('Outputpoints','specified');
h=0.5;
lw=0.9;
Ms=7;
%
subplot(3,1,1);
[t,x,y]=sim('block31',[0:h:30],opt);
[ts,ys]=stairs(t,y(:,2));
plot(ts,ys, 'k','Linew',lw);
%title('Fig 3.1   Input');
axis([0,30,-0.75,0.75]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10 20 30]);
ylabel('Input','Fontname','NewCenturySchlbk','Fontsize',9)
%
subplot(3,1,2);
hpl=plot(t,y(:,1),'m.');
axis([0,30,-5,5]);
set(gca,'Fontsize',9,'Fontname','NewCenturySchlbk');
set(gca,'xtick',[0 10 20 30]);
set(hpl,'MarkerSize',Ms)
xlabel('Time','Fontname','NewCenturySchlbk','Fontsize',9)
ylabel('Output','Fontname','NewCenturySchlbk','Fontsize',9)
%
ylblalgn;
subplot(3,1,3);
delete(gca);
drawnow