JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

Student will be able to

• 1. Identify and monitor process parameters of various processes.
• 2. Understand the principles of controllers, degrees of freedom, and control valves.
• 3. Recognize these principles written in form of mathematical equations for various control applications.
• 4. Apply these equations to analyze problems by making good assumptions and learn systematic engineering method to solve practical process control problems.

Course Outcomes

After completion of the course the student is able to:

• 1. Apply fundamental knowledge of mathematics to modeling and analysis of fluid flow, level, pressure, temperature problems.
• 2. Conduct experiments in pipe flows and open-channel flows and interpreting data from model studies to prototype cases. Documenting them in engineering reports.
• 3. Understand the possible disasters caused by an in correct Design/Analysis in hydraulic, pneumatic engineering system.
• 4. Apply multi loop control systems in various process 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 and Types of 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 and Tuning of Controllers Evaluation criteria – 1/4th decay ratio, I AE, ISE,ITSE, ITAE - determination of optimum settings for mathematically described process using time response and frequency response-tuning of controllers- process curve reaction method – continuous oscillation method – dampedoscillation method – problems.

UNIT - IV

Final Control Elements and Control Valves I/P Converter, P/I converter - pneumatic, electric and hydraulic actuators – valve Positioned 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 – Feed Forward Feedback Controller (FFFBC) – Ratio control – Cascade control – Split range – Multivariable control and examples from distillation column, Boiler system and heat exchanger.

R18 B.TECH EIE III YEAR

TEXT BOOKS

• 1. Automatic Process Control – by Eckman D.P., Wiley Eastern Ltd., New Delhi, 1993.
• 2. Process Control Instrumentation technology by Curtis. D. Johnson, Edition 8, PHI Publishers

REFERENCES

• 1. Chemical Process Control: An introduction to Theory and Practice – by Stephanopoulos, Prentice Hall, New Delhi, 1999
• 2. Process Control, Third Edition – Liptak B.G., Chilton Book Company, Pennsylvania, 1995
• 3. Process control – by Pollard A., Heinemann Educational Books, London, 1971.
• 4. Process Control – Harriott P, TMH, 1991
• 5. Process Control – by Patranabis. R18 B.TECH EIE III YEAR