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5. feedback control[1]

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Chemical Process Dynamics and Control Feedback Control Eng. Misael González Macias
Regulatory and Servo Control ,[object Object],[object Object]
Basic Components of Control Systems ,[object Object],[object Object],[object Object]
Sensors and Transmitters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Sensors and Transmitters ST(s ) Process Variable PV(s) Transmitter Output TO(s)
Sensors and Transmitters ,[object Object],[object Object],[object Object]
Control Valves ,[object Object],[object Object],[object Object],[object Object]
Control Valves ,[object Object],Control valve
Control Valves ,[object Object],Transducer percent controller output
Control Valves ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Control Valves ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Control Valves ,[object Object]
Concept of Feedback Control Process m d y Process m d y Final Control Element Sensor/ transmitter Controller y sp y m c e Open loop Closed loop Controller Mechanism - +
Typical Feedback Control Systems Flow Control
Typical Feedback Control Systems Pressure Control Liquid-Level Control
Typical Feedback Control Systems Temperature Control Liquid-Level Control
Representation of Feedback Loops FC for flow control PC for pressure control LC for liquid-level control TC for temperature control CC for composition control FT for flow transmiser PC for pressure transmiser LC for liquid-level transmiser TC for temperature transmiser CC for composition transmiser
Representation of Feedback Loops Example Control valves on a flash drum See also Apendix A of A. Smith and A. B. Corripio, Control Automático de Procesos, Limusa
Types of Feedback Controller ,[object Object],[object Object],[object Object],[object Object],percent controller output (50 %)
Types of Feedback Controller ,[object Object]
Types of Feedback Controller ,[object Object]
Types of Feedback Controller ,[object Object]

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5. feedback control[1]

  • 1. Chemical Process Dynamics and Control Feedback Control Eng. Misael González Macias
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  • 5. Sensors and Transmitters ST(s ) Process Variable PV(s) Transmitter Output TO(s)
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  • 13. Concept of Feedback Control Process m d y Process m d y Final Control Element Sensor/ transmitter Controller y sp y m c e Open loop Closed loop Controller Mechanism - +
  • 14. Typical Feedback Control Systems Flow Control
  • 15. Typical Feedback Control Systems Pressure Control Liquid-Level Control
  • 16. Typical Feedback Control Systems Temperature Control Liquid-Level Control
  • 17. Representation of Feedback Loops FC for flow control PC for pressure control LC for liquid-level control TC for temperature control CC for composition control FT for flow transmiser PC for pressure transmiser LC for liquid-level transmiser TC for temperature transmiser CC for composition transmiser
  • 18. Representation of Feedback Loops Example Control valves on a flash drum See also Apendix A of A. Smith and A. B. Corripio, Control Automático de Procesos, Limusa
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