JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

To acquire the knowledge on dynamics of simple processes, control

actions, control settings, operation of control elements and control valves.

Course Outcomes

Upon completion of this course the student shall be able to understand

the concept how control actions are performed in the industries.

UNIT - I

Process Dynamics: Process variables – Load variables – Dynamics of simple pressure, flow level and temperature process – interacting and non-interacting systems – continuous and batch process – self-regulation – Servo and Regulator operation - problems.

UNIT - II

Control Actions and Controllers: Basic control actions – characteristics of two position, three position, Proportional, Single speed floating, Integral and Derivative control modes – PI, PD, PID control modes – Problems. Types of Controllers: Pneumatic, Hydraulic and Electronic Controllers to realize various control actions.

UNIT - III

Controller Settings: Evaluation criteria – 1/4th decay ratio, IEA, ISE, ITAE - determination of optimum settings for mathematically described process using time response and frequency response. Tuning of Controllers: Tuning process curve reaction method – continuous oscillation method – damped oscillation method – problems

UNIT - IV

Final Control Elements: I/P Converter, P/I converter - pneumatic, electric and hydraulic actuators – valve Positioner Control Valves: Control valves – characteristic of control valves – valve body – Globe, Butterfly, diaphragm, Ball valves – Control valve sizing – Cavitations, flashing - problems.

UNIT - V

Multiloop Control System: Feed forward control – Ratio control – Cascade control – Split range – Multivariable control and examples from distillation column and Boiler system.

TEXT BOOKS:

• 1. Chemical Process Control: An introduction to Theory and Practice – by Stephanopoulos, Prentice Hall, New Delhi, 1999. R16 B.TECH EIE.
• 2. Process Dynamic Control- Dale E. Seborg, Thomas F. Edgar, and Duncan A. Mellichamp, 2/3 Ed, JW

REFERENCE BOOKS:

• 1. Process Control, Third Edition – Liptak B.G., Chilton Book Company, Pennsylvania, 1995.
• 2. Process control – by Pollard A., Heinemann Educational Books, London, 1971.
• 3. Automatic Process Control – by Eckman D.P. , Wiley Eastern Ltd., New Delhi, 1993.
• 4. Process Control – Harriott P. , TMH, 1991. R16 B.TECH EIE.