MEEN 364
Spring 2010
Problem 1
Consider the following electromechanical system. The coil generates a force that acts on
a steel core with mass m. The displacement of the steel core is x3 and is measur
MEEN 364
Exam 2
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
Exam 2 April 18, 2007
7:00 9:00 PM
101 RICH and 114 RICH
Name:
Please circle your sectio
MEEN 364
Solutions to Exam 2
Fall 2004
Solutions to Exam 2
1) [15 points]
3s + 8
, u(t) = 3 sin(2t 2/3)
s + 3s + 12
The frequency of the output signal at steady state is equal to 2 rad/sec. At 2 rad/s
MEEN 364
Spring 2008
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 April 16, 2008 7 PM 9 PM
Name:
Please circle your section below: Section (La
MEEN 364
Spring 2008
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 April 16, 2008 7 PM 9 PM
Name:
Please circle your section below: Section (La
MEEN 364
Spring 2009
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 April 15, 2009 7 PM 9 PM
Name:
Please circle your section below: Section (La
MEEN 364
Spring 2009
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 April 15, 2009 7 PM 9 PM
Name:
Please circle your section below: Section (La
MEEN 364
Exam 1
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 1 February 21, 2002 @ 7 - 9 PM
Room 101 Richardson
Name: _
Please circle your secti
MEEN 364
Solutions to Exam 1
Solutions to Exam 1
Problem 1 - Graded by Ram
Problem 2 - Graded by Ram
Problem 3 - Graded by Tolis
Problem 4 - Graded by Vivek
1a) The Fourier transform of a function f(t
MEEN 364
Exam 2
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 April 11, 2002 @ 7 - 9 PM
Room 202T ENPH
Name: _
Please circle your section below
MEEN 364
Solutions to Exam 1
Fall 2004
Solutions to Exam 1
1) Consider the following continuous-time signal
xa (t ) = 3 cos(150 t ) 4 cos(800 t ) + sin(300 t ) + 2 sin(700 t ).
a) [10 points] What are
MEEN 364
Fall 2006
Solutions to Final Exam
Sections 504-506
1)
Kinematics Stage
The two degrees of freedom of the system are described by and respectively. The
position, velocity and acceleration of t
MEEN 364
Fall 2005
Solutions to Exam 1
1a)
F (t ) = sin 2 (t ) + 3 cos 2 (t ) = 2 + cos(2t ).
F ( s) =
2
3s 2 + 8
s
.
+2
=
s ( s + 4) s ( s 2 + 4)
G (t ) = te t + 2t cos(t )
Use the following relation
MEEN 364
Spring 2006
Solutions to Exam 1
1a)
f(t) can be represented as
2t [U (t ) U (t 1)]; 0 t < 1
f (t ) =
2[U (t 1) U (t 2)]; t 1
Hence f(t) can be written as
f (t ) = 2t [U (t ) U (t 1)] + 2[U (
MEEN 364
Fall 2005
Solutions to Exam 2
1) For the electrical circuit, left loop:
R1i '+ vc = e(t )
(1.1)
where
dvc i ' i (t )
=
dt
C
R1
(1.2)
L
i(t)
i
Vc
e(t)
C
emf
Right Loop
Left Loop
R
For the righ
MEEN 364
Fall 2006
Solutions to Exam 2
1a)
Consider the electric circuit:
Writing the voltage balance equation for LOOP 1 and LOOP 2,
V (t ) + Ri1 (t ) + L
di (t )
=0
dt
But,
i1 (t ) = i (t ) I (t )
MEEN 364
Spring 2006
Solutions to Exam 2
1a)
Electrical Part
Writing the voltage balance equation for the electrical part of the DC motor, we have
V =L
di a
+ Ria + k e 1
dt
(1.1)
Free body diagram of
MEEN 364
Solutions to Final Exam
Fall 2004
Solutions to Final Exam
1) [25 points]
(a)
&
Mechanical system: m& = b( y x) + k ( y x) + f c (t )
x
q
= e(t )
Electrical system: Ri +
C ( x)
(1)
q(t ) 2
&
a
MEEN 364
Fall 2005
Solutions to Final Exam
Sections 501-503
1a)
From the shaded area, it can be concluded that
25 n 50
sin(32) sin(61)
1b) The transfer function of the system is:
3k
k1
1 +
Y ( s)
s
MEEN 364
Fall 2005
Solutions to Final Exam
Sections 504-506
1a)
From the shaded area, it can be concluded that
25 n 50
sin(32) sin(61)
1b) The transfer function of the system is:
3k
k1
1 +
Y ( s)
s
MEEN 364
Fall 2006
Solutions to Final Exam
Sections 501-503
1)
Kinematics stage
From the given figure, it can be seen that there are 2 rigid bodies. There are 2 degrees of
freedom and let the degrees
MEEN 364
Solutions to Exam 2
Solutions to Exam 2
Problem 1 Graded by Vivek
Problem 2 Graded by Tolis
Problem 3 Graded by Ram
Problem 4 Graded by Ram
1)
Writing the voltage balance equation for the ele
MEEN 364
Solutions to Exam 2
Solution to Exam 2
1)
ia
Vin
e
For the electrical circuit part, we have,
di
Vin = Ra i a + La a + e
dt
&
e = K e m
(1)
(2)
For the mechanical part, the free body diagram i
MEEN 364
Solutions to Final Exam
Solutions to Final Exam
1)
The motor is characterized by the following two equations:
Te = K t i a (t ),
v = K &
e
e
Writing the voltage balance equation for the elect
MEEN 364
Spring 2008
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
Final Exam May 5, 2008, 8:00 AM - 10:00 AM
Name:
Please circle your section below:
MEEN 364
Spring 2008
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
Final Exam May 5, 2008, 8:00-10:00
Name:
Please circle your section below: Section
MEEN 364
Spring 2009
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
Final Exam May 8, 2009, 12:30-2:30 pm
Name:
Please circle your section below: Secti
MEEN 364
Spring 2009
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
Final Exam May 8, 2009, 12:30-2:30
Name:
Please circle your section below: Section
MEEN 364
Exam 2
Texas A&M University
Department of Mechanical Engineering
MEEN 364 Dynamic Systems and Controls
EXAM 2 JULY 25, 2002 @ 7 9 PM
Room 202T ENPH
Name:
Please circle your section below
Sect
MEEN 364
Solutions to Exam 2
Solutions to Exam 2
Problem 1 Graded by Tolis
Problem 2 Graded by Vivek
Problems 3,4,5 Ram
1)
The given electro-mechanical system is as shown
k
i1(t)
m
i2(t)
L
R
e(t)
b
F(