University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2011 2011-04-27
Test 2 Take-home due midnight 4/29/2011
Problem 1 (25 points): (a) Consider the damped
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2007
Test 1 Take home due: 3/26/2006
You can use Matlab and any other software you would like to work o
Problem 1.
c)
[t,x] = ode45('funky',[0 10],[2 4]);
plot(t,x(:,1),'-.r',t,x(:,2),'-b')
leg = legend('p(t)','r(t)');
set(leg,'Location','NorthWest')
function dx = funky(t,x)
a = 2; b = 3; c = 3; d = 4;
Homework 6
Problem 1
syms h w b s
% continuous system
A = [0 w; -w 0];
B = [0; b];
% calculate controllability matrix W = [B AB]
W = [B A*B];
% if W is full rank, then the system is controllable
rank(
PROBLEM 4.
syms a t
r1 = -a + sqrt(a^2 - 1);
r2 = -a - sqrt(a^2 - 1);
B = (2*a-r2)/(r1-r2);
A = (2*a-r1)/(r2-r1);
Y = A*exp(-r1*t) + B*exp(-r2*t);
% eq2 = int(Y^2, t, 0, inf) was calculated by hand be
Lena Li
ENEE463
May 12, 2014
Homework 8
Problem 1
A = diag([-1 -2 -2 -3 -3]);
B = [0 1 0 1 0; 1 0 1 0 1]';
C = [1 -1 0 2 0; 0 0 1 1 -1];
% FULL ORDER OBSERVER
% check for observability
% Ob = obsv(A,C
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS Spring 2014
Problem Set 2 Due 2/10/2014
Problem 1. Use MATLAB to plot the root locus for the following system
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2014 Problem Set 1 due February 3
Problem 1. Consider the second order linear system defined by
y(t)
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2011 2011-03-14
Test 1 - Solutions
All problems count 25 points
Problem 1: (a) Show that the damped sec
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2008
Test 1 Solutions
Problem 1. Consider the damped second order system
G (s) =
1
2
s + 2n s + n
2
=
1
University of Maryland
Electrical Engineering Department
ENEE 463 DIGITAL CONTROL SYSTEMS
Spring 2008
Test 1 Solutions
Problem 1. Consider the damped second order system
G (s) =
1
2
s + 2n s + n
2
=
1