Solution Manual For Modern Control Systems, 12th Edition
Solution Manual For Modern Control Systems, 12th Edition is your ultimate textbook solutions guide, providing answers to the most difficult questions.
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C H A P T E R 1
Introduction to Control Systems
There are, in general, no unique solutions to the following exercises and
problems. Other equally valid block diagrams may be submitted by the
student.
Exercises
E1.1 A microprocessor controlled laser system:
Controller
Error Current i(t) Power
out
Desired
power
output
Measured
power
- Laser
Process
processor
Micro-
Power
Sensor
Measurement
E1.2 A driver controlled cruise control system:
Desired
speed
Foot pedal Actual
auto
speed
Visual indication of speed
Controller
-
Process
Measurement
Driver Car and
Engine
Speedometer
E1.3 Although the principle of conservation of momentum explains much of
the process of fly-casting, there does not exist a comprehensive scientific
explanation of how a fly-fisher uses the small backward and forward mo-
tion of the fly rod to cast an almost weightless fly lure long distances (the
1
Introduction to Control Systems
There are, in general, no unique solutions to the following exercises and
problems. Other equally valid block diagrams may be submitted by the
student.
Exercises
E1.1 A microprocessor controlled laser system:
Controller
Error Current i(t) Power
out
Desired
power
output
Measured
power
- Laser
Process
processor
Micro-
Power
Sensor
Measurement
E1.2 A driver controlled cruise control system:
Desired
speed
Foot pedal Actual
auto
speed
Visual indication of speed
Controller
-
Process
Measurement
Driver Car and
Engine
Speedometer
E1.3 Although the principle of conservation of momentum explains much of
the process of fly-casting, there does not exist a comprehensive scientific
explanation of how a fly-fisher uses the small backward and forward mo-
tion of the fly rod to cast an almost weightless fly lure long distances (the
1
2 CHAPTER 1 Introduction to Control Systems
current world-record is 236 ft). The fly lure is attached to a short invisible
leader about 15-ft long, which is in turn attached to a longer and thicker
Dacron line. The objective is cast the fly lure to a distant spot with dead-
eye accuracy so that the thicker part of the line touches the water first
and then the fly gently settles on the water just as an insect might.
Desired
position of
the fly
Actual
position
of the fly
Visual indication
of the position of
the fly
Fly-fisher
Wind
disturbanceController
-
Process
Measurement
Mind and
body of the
fly-fisher
Rod, line,
and cast
Vision of
the fly-fisher
E1.4 An autofocus camera control system:
One-way trip time for the beam
Distance to subject
Lens focusing
motor
K 1
Lens
Conversion factor
(speed of light or
sound)
Emitter/
Receiver
Beam
Beam return Subject
current world-record is 236 ft). The fly lure is attached to a short invisible
leader about 15-ft long, which is in turn attached to a longer and thicker
Dacron line. The objective is cast the fly lure to a distant spot with dead-
eye accuracy so that the thicker part of the line touches the water first
and then the fly gently settles on the water just as an insect might.
Desired
position of
the fly
Actual
position
of the fly
Visual indication
of the position of
the fly
Fly-fisher
Wind
disturbanceController
-
Process
Measurement
Mind and
body of the
fly-fisher
Rod, line,
and cast
Vision of
the fly-fisher
E1.4 An autofocus camera control system:
One-way trip time for the beam
Distance to subject
Lens focusing
motor
K 1
Lens
Conversion factor
(speed of light or
sound)
Emitter/
Receiver
Beam
Beam return Subject
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