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14th Global Edition By Richard C. Dorf
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Chapters 1 - 13, Complete
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,T A B L
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6 7 6 7 6 7 6 7 6 7 - 6 7 6 7 C 6 7 O N 6 7 6 7 6 7 6 7 T E 6 7 6 7 6 7
N T S
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1. Introduction to Control Systems........................................................... 1
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2. Mathematical Models of Systems ..................................................... 206 7 6 7 6 7
3. State Variable Models ....................................................................... 79
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4. Feedback Control System Characteristics .......................................... 126
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5. The Performance of Feedback Control Systems ........................ 166
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6. The Stability of Linear Feedback Systems .............................. 216
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7. The Root Locus Method .............................................................. 257
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8. Frequency Response Methods.......................................................... 359
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9. Stability in the Frequency Domain ............................................. 420
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10. The Design of Feedback Control Systems................................. 492
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11. The Design of State Variable Feedback Systems .................... 574
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12. Robust Control Systems .................................................................... 633
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13. Digital Control Systems .................................................................... 691
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, C 6 7 6 7 H 6 7 A 6 7 P T 6 7 6 7 6 7 E R 6 7 6 7
1
Introduction to Control Systems 6 7 6 7 6 7
There are, in general, no unique solutions to the following exercises and
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problems. Other equally valid block diagrams may be submitted by the
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student.
67
Exercises
E1.1 A microprocessor controlled laser system:
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Error Current i(t) 67
Desired Power
6 powe 7 - out
r
6 outp 7
ut Measured
6 7 power
E1.2 A driver controlled cruise control system:
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Controller
Foot pedal
Desired
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Car and67
Actual
Driver
6
d
spee 7 - Engin
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auto
6 speed
7
Measurement e
Speedometer
Visual indication of speed
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E1.3 6 7 Although the principle of conservation of momentum explains
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6 7 much of the process of fly-casting, there does not exist a comprehensive
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67scientific explanation of how a fly-fisher uses the small backward and
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67forward mo- tion of the fly rod to cast an almost weightless fly
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6 7lure long distances (the
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1
, 2 CHAPTER 1 67 6 7 6 7 Introduction to Control Systems 67 67 67
current world-record is 236 ft). The fly lure is attached to a short invisible
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leader about 15-ft long, which is in turn attached to a longer and thicker
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Dacron line. The objective is cast the fly lure to a distant spot with dead-
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eye accuracy so that the thicker part of the line touches the water first
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and then the fly gently settles on the water just as an insect might.
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Wind
Controller
Mind and 67
Actual
of - body of
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7
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on of
fly the fly-
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67 cast the fly
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6
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7
fisher
Measurement
67 of
Visual indication
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67
6 of the
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position of
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the fly
E1.4 An autofocus camera control system:
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One-way trip time for the beam
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Conversion factor 67
67 1 6 (speed of light
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or
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sound)
Emitter/
Distance to subject 67 67
6 7
Lens