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제어공학 6판 솔루션 (Feedback control of dynamic system 6th edition , Gene F. Franklin , J. David Powell , Abbas Emami Naeini)

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[솔루션] 제어공학 6판(Feedback control of dynamic system 6th edition, Gene F. Franklin, J. David Powell, Abbas Emami-Naeini) 솔루션 입니다.

1장부터 10장까지로 구성되어 있습니다.

1장의 연습문제 풀이를 발췌했습니다.
(그림은 게시판에 호환되지 않습니다. 양해바랍니다..^^)

Chapter 1
An Overview and Brief
History of Feedback Control
1.1 Problems and Solutions
1. Draw a component block diagram for each of the following feedback control
systems.
(a) The manual steering system of an automobile
(b) Drebbel’s incubator
(c) The water level controlled by a
5;oat and valve
(d) Watt’s steam engine with
5;y-ball governor
In each case, indicate the location of the elements listed below and
give the units associated with each signal.
 the process
 the process output signal
 the sensor
 the actuator
 the actuator output signal
 The reference signal
Notice that in a number of cases the same physical device may per-
form more than one of these functions.
Solution:
(a) A manual steering system for an automobile:
101
102CHAPTER 1. AN OVERVIEW AND BRIEF HISTORY OF FEEDBACK CONTROL
(b) Drebbel’s incubator:
(c) Water level regulator:
(d) Fly-ball governor:
1.1. PROBLEMS AND SOLUTIONS 103
(e) Automatic steering of a ship:
(f) A public address system:
2. Identify the physical principles and describe the operation of the thermo-
stat in your home or o¢ ce.
Solution:
A thermostat is a device for maintaining a temperature constant at a
desired value. It is equipped with a temperature sensor which detects
deviation from the desired value, determines whether the temperature
setting is exceeded or not, and transmits the information to a furnace
or air conditioner so that the termperature in the room is brought back
104CHAPTER 1. AN OVERVIEW AND BRIEF HISTORY OF FEEDBACK CONTROL
T h i c k
s t o c k
C o n s i s t e n c y
m e t e r
C o n t r o l l e r
W h i t e
w a t e r
C V
R e f i n e r
M a c h i n e
c h e s t
S t o r a g e
c h e s t
W i r e
M o i s t u r e
m e t e r
S c r e e n s
a n d c l e a n e r s
H e a d b o x D r y i n g
s e c t i o n
P r e s s e s R e e l
Figure 1.1: A paper making machine From Karl Astrom, (1970, page 192)
reprinted with permission.
to the desired setting. Examples: Tubes
3;lled with liquid mercury
are attached to a bimetallic strip which tilt the tube and cause the mer-
cury to slide over electrical contacts. A bimetallic strip consists of two
strips of metal bonded together, each of a di¤erent expansion coe¢ cient
so that temperature changes bend the metal. In some cases, the bending
of bimetallic strips simply cause electrical contacts to open or close di-
rectly. In most cases today, temperature is sensed electronically using,for
example, a thermistor, a resistor whose resistance changes with tempera-
ture. Modern computer-based thermostats are programmable, sense the
current from the thermistor and convert that to a digital signal.
3. A machine for making paper is diagrammed in Fig. 1.12. There are two
main parameters under feedback control: the density of
3;bers as controlled
by the consistency of the thick stock that
5;ows from the headbox onto the
wire, and the moisture content of the
3;nal product that comes out of the
dryers. Stock from the machine chest is diluted by white water returning
from under the wire as controlled by a control valve (CV). A meter supplies
a reading of the consistency. At the “dry end”of the machine, there is a
moisture sensor. Draw a signal graph and identify the seven components
listed in Problem 1 for
(a) control of consistency
(b) control of moisture
Solution:
(a) Control of paper machine consistency:

100

Solutions Manual
6th Edition

Feedback Control of Dynamic Systems
. .

Gene F. Franklin
.

J. David Powell
.

Abbas Emami-Naeini
. . . .

Assisted by: H.K. Aghajan H. Al-Rahmani P. Coulot P. Dankoski S. Everett R. Fuller T. Iwata V. Jones F. Safai L. Kobayashi H-T. Lee E. Thuriyasena M. Matsuoka

Chapter 1

An Overview and Brief History of Feedback Control
1.1 Problems and Solutions

1. Draw a component block diagram for each of the following feedback control systems. (a) The manual steering system of an automobile (b) Drebbel’ incubator s (c) The water level controlled by a ‡ and valve oat (d) Watt’ steam engine with ‡ s y-ball governor In each case, indicate…(생략)
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