ex2_2.m

华东理工大学自动化系《控制系统分析、设计和应用》教材配套程序实例,有关说明： 1. 安装MATLAB软件。安装时

% ex2_2
% 含时滞一阶惯性过程（第1类过程）的参数估计
t=0:10:200; 
h=[0.0113, 0.0162,0.1947,0.5591,0.7050,0.7744,0.9218,...
   0.9208,0.9852,0.9575,1.0546,0.9873,1.0258,0.9930,...
   1.0203,1.0605,0.9637,1.0051,0.9878,0.9876,1.0349];
tt=0:0.5:200;
hh=spline(t,h,tt);
x0=[2,10,3];
x=lsqcurvefit('onedt',x0,tt,hh)
y= onedt (x,tt);
err=sum((hh-y).^2)
plot(t,h,'r*',tt,y,'k');
grid;