SYSTEM DYNAMICS & CONTROL CHAPTER 3 ELEMENTS OF THE AUTOMATICS SYSTEM Dr... Elements & Automatics System Antenna azimuth position control system System concept... 3 Elements & Automat
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CHAPTER 3
ELEMENTS OF THE
AUTOMATICS SYSTEM
Dr Vo Tuong Quan
HCMUT - 2011
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Antenna azimuth position control system
System concept
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Antenna azimuth position control system
Detailed layout
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Antenna azimuth position control system
Schematic
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Antenna azimuth position control system
Function block diagram
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Antenna azimuth position control system
Response of a position control system
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Open-loop systems
Block diagram of control systems: open-loop system Open-loop systems do not monitor or correct the output for disturbances; however, they are simpler and less expensive than closed-loop systems
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Closed-loop systems
Block diagram of control systems: Closed-loop system Closed-loop systems monitor the output and compare it to the input If an error
is detected, the system corrects the output and hence corrects the effects of
disturbances
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Control systems analysis and design focuses
• Producing the desired transient response
• Reducing steady-state errors
• Achieving stability
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Closed-loop systems:
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The Design Process:
diagram
specifications that include stability, transient response, and steady-state performance