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Edition by Norman S. Nise
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, O N E g h g h
Introduction
ANSWERS TO REVIEW QUESTIONS
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1. Guided missiles, automatic gain control in radio receivers, satellite tracking antenna
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2. Yes - power gain, remote control, parameter conversion; No - Expense, complexity
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3. Motor, low pass filter, inertia supported between two bearings
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4. Closed-loop systems compensate for disturbances by measuring the response,
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gh comparing it to the input response (the desired
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g h the output response.
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5. Under the condition that the feedback element is other than unity
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6. Actuating signal gh
7. Multiple subsystems can time share the controller. Any adjustments to the
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gh controller can gh g h be implemented with simply software changes.
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8. Stability, transient response, and steady-state error
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9. Steady-state, transient gh
10. It follows a growing transient response until the steady-state response is no longer
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gh visible. g h The system gh g h will either destroy
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g h because of saturation in driving amplifiers, or hit limit stops.
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11. Transient response gh
12. True
13. Transfer function, state-space, differential equations
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14. Transfer function - the Laplace transform of the differential equation
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State-space - representation of an nth order differential equation as n simultaneous first-order
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gh differential equations gh
Differential equation - Modeling a system with its differential equation
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SOLUTIONS TO PROBLEMS gh gh
50 volts gh
1. Five turns yields 50 v. = 1.59
5 x 2
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Therefore K
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= rad
gh
,
, 2 Chapter
1:
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2.
Desired Temperature Voltage Actual
Fuel
temperatu ghdifference differenc
gh
temperature
ghflo
gh gh
r ghe e
w
+ gh
Amplifier
Thermostat Heater
and
ghvalve
-
s
3.
Desired Input Error Aileron Roll Roll
ghroll volta
gh volta
gh ghpositi ghr ghan
g g o at gl
+
controls
-
4.
Input
Speed
Desired volta
gh
Actual
ghError Motor
ghspeed
g ghe ghspee
ghvolta ghand
transducer Amplifier ghd
+ g ghe ghdriv
e
system
- Dancer
Dancer
positio
gh
dynami
gh
n
Voltage sensor c
proportion
gh
a ghl
to g h actual g h speed
5.
Input Power Rod
ghvolta ghError
gh positio
Desired g ghe ghvolta Motor n Actual
ghpowe g ghe powe
ghand
r
+ Amplifier
Transducer ghdriv Reactor ghr
e
-
ghsyst
e
Sensor g h &
ghtransduce
Voltage
proportion
gh
a ghl
to gh actual g h power