To introduce technical terms and nomenclature associated with Process control domain.
To familiarize the students with characteristics, selection, sizing of control valves.
To provide an overview of the features associated with Industrial type PID controller.
To make the students understand the various PID tuning methods.
To elaborate different types of control schemes such as cascade control, feed forward control and Model Based control schemes.
UNIT I PROCESS MODELLING AND DYNAMICS 6+6
Need for process control – Mathematical Modeling of Processes: Level, Flow, Pressure and Thermal processes – Continuous and batch processes – Self regulation – Servo and regulatory operations – Lumped and Distributed parameter models – Heat exchanger – CSTR – Linearization of nonlinear systems.
UNIT II FINAL CONTROL ELEMENTS 6+6
Actuators: Pneumatic and electric actuators – Control Valve Terminology – Characteristic of Control Valves: Inherent and Installed characteristics – Valve Positioner – Modeling of a Pneumatically Actuated Control Valve – Control Valve Sizing: ISA S 75.01 standard flow equations for sizing Control Valves – Cavitation and flashing – Control Valve selection
UNIT III CONTROL ACTIONS 6+6
Characteristic of ON-OFF, Proportional, Single speed floating, Integral and Derivative controllers – P+I, P+D and P+I+D control modes – Practical forms of PID Controller – PID Implementation Issues: Bumpless, Auto/manual Mode transfer, Anti-reset windup Techniques – Direct/reverse
UNIT IV PID CONTROLLER TUNING 6+6
PID Controller Design Specifications: Criteria based on Time Response and Criteria based Frequency Response – PID Controller Tuning: Z-N and Cohen-Coon methods, Continuous cycling method and Damped oscillation method, optimization methods, Auto tuning – Cascade control – Feed-forward control
UNIT V MODEL BASED CONTROL SCHEMES 6+6
Smith Predictor Control Scheme – Internal Model Controller – IMC PID controller –- Threeelement Boiler drum level control – Introduction to Multi-loop Control Schemes – Control Schemes for CSTR, and Heat Exchanger – P&ID diagram.
TOTAL : 60 PERIODS
COURSE OUTCOMES (COs)
Ability to understand technical terms and nomenclature associated with Process control domain.
Ability to build models using first principles approach as well as analyze models.
Ability to Design, tune and implement PID Controllers to achieve desired
performance for various processes
Ability to Analyze Systems and design & implement control Schemes for various Processes.
Ability to Identify, formulate and solve problems in the Process Control Domain.
- Seborg, D.E., Edgar, T.F. and Mellichamp, D.A., “Process Dynamics and Control”, Wiley John and Sons, 2nd Edition, 2003.
- Bequette, B.W., “Process Control Modeling, Design and Simulation”, Prentice Hall of India, 2004.
- Stephanopoulos, G., “Chemical Process Control – An Introduction to Theory and Practice”, Prentice Hall of India, 2005.
- Coughanowr, D.R., “Process SystemsAnalysis and Control”, McGraw – Hill International Edition,2004.
- Curtis D. Johnson, “Process Control Instrumentation Technology”, 8th Edition, Pearson, 2006.
- Considine, D.M., Process Instruments and Controls Handbook, Second Edition, McGraw, 1999.
- Bela.G.Liptak., “Process Control and Optimization”., Instrument Engineers’ Handbook., volume 2, CRC press and ISA, 2005.
- Ramesh C. Panda., T.Thyagarajan., “An Introduction to Process Modelling Identification and Control for Engineers” Narosa Publishing house Pvt. Ltd, 2017.