3 chapter 3 elements and automatics system

SYSTEM DYNAMICS & CONTROL CHAPTER ELEMENTS OF THE AUTOMATICS SYSTEM Dr Vo Tuong Quan HCMUT - 2011 Elements & Automatics System Antenna azimuth position control system System concept  2011 – Vo Tuong Quan Elements & Automatics System Antenna azimuth position control system Detailed layout  2011 – Vo Tuong Quan Elements & Automatics System Antenna azimuth position control system Schematic  2011 – Vo Tuong Quan Elements & Automatics System Antenna azimuth position control system Function block diagram  2011 – Vo Tuong Quan Elements & Automatics System Antenna azimuth position control system Response of a position control system  2011 – Vo Tuong Quan Elements & Automatics System Open-loop systems Block diagram of control systems: open-loop system Open-loop systems not monitor or correct the output for disturbances; however, they are simpler and less expensive than closed-loop systems  2011 – Vo Tuong Quan Elements & Automatics System 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  2011 – Vo Tuong Quan Elements & Automatics System Control systems analysis and design focuses • Producing the desired transient response • Reducing steady-state errors • Achieving stability  2011 – Vo Tuong Quan Elements & Automatics System Closed-loop systems: 10  2011 – Vo Tuong Quan Elements & Automatics System The Design Process: Step 1: Determine a physical system and specifications from requirements Step 2: Draw a functional block diagram Step 3: Represent the physical system as a schematic Step 4: Use the schematic to obtain a mathematical model, such as a block diagram Step 5: Reduce the block diagram Step 6: Analyze and design the system to meet specified requirements and specifications that include stability, transient response, and steady-state performance 11  2011 – Vo Tuong Quan ... & Automatics System 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. .. Tuong Quan Elements & Automatics System Antenna azimuth position control system Response of a position control system  2011 – Vo Tuong Quan Elements & Automatics System Open-loop systems Block... control systems: open-loop system Open-loop systems not monitor or correct the output for disturbances; however, they are simpler and less expensive than closed-loop systems  2011 – Vo Tuong Quan Elements