CH25C08 Process Dynamics and Control – Semester IV – Chem – R-2025

Subject Code & Name: CH25C08 – Process Dynamics and Control

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B.Tech. Chemical Engineering (Chem)

Credits / L-T-P: 4 Credits | L-T-P: 3-0-2

Course Objectives

• To provide knowledge on process dynamics, mathematical modeling, controller design, stability analysis and advanced process control strategies used in chemical process industries.

Full Unit-wise Syllabus

Unit I – Basics of Process Control

Process instrumentation - Need of measuring instruments, performance characteristics - static and dynamic, principal measuring instruments - pressure, temperature, flow rate, liquid level, pH and concentration; Laplace transforms - properties of Laplace transforms, solution of ODE using Laplace transforms, forcing functions.

Activities: Analyze the characteristics and applications of industrial measuring instruments, apply Laplace transforms for solving process dynamic equations.

Unit II – Open Loop Systems

Introduction to chemical process control; formulating process models using transfer function approach; Open-loop systems - first order systems and their transient response for standard inputs, first order systems in series, linearization and its application in process control; second order systems and their dynamics; transportation lag- first order and second order Pade approximation.

Activities: Develop transfer function models for process systems, analyze transient response of first and second order systems, evaluate transportation lag effects and linearization techniques in process control applications.

Unit III – Closed Loop Systems

Closed loop control systems - development of block diagram, servo and regulatory problems, transfer function for controllers and final control element - Types of control valve - sizing & characteristics, modes of control action - ON/OFF, P, PI, PD, PID and their characteristics, transient response of closed-loop control systems, stability analysis using Routh’s test.

Activities: Analyze closed loop control system performance, evaluate controller tuning and control valve characteristics, determine system stability using Routh stability criterion.

Unit IV – Control System Design by Frequency Response

Introduction to frequency response of closed-loop systems, control system design by frequency response techniques, bode diagram, stability criterion, tuning of controllers - Ziegler Nichols and Cohen-Coon tuning methods.

Activities: Interpret frequency response characteristics using Bode plots, analyze stability using frequency domain techniques, compare controller tuning methods for process control systems.

Unit V – Digital Control Systems

Introduction to advanced control systems - cascade control, feed forward control, ratio control, multivariable control; Introduction to digital control, Programmable Logic Controller (PLC), Distributed Control System (DCS), SCADA.

Activities: Analyze advanced process control strategies, evaluate digital control architectures such as PLC, DCS and SCADA, compare conventional and computer-based process control systems.

Course Outcomes (COs)

• CO1: Mapping Mapping Understand process instrumentation systems, – measurement principles, and dynamic characteristics of process variables.
• CO2: Apply transfer function models to determine the open-PO1(3) loop dynamic response of process systems.
• CO3: Analyze closed-loop control systems, controller actions, and stability characteristics of process control systems.
• CO4: Evaluate frequency response methods and controller tuning techniques for effective process control applications.
• CO5: Design advanced and digital control systems for modern process industries by integrating control strategies and automation tools.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Assignments (20%), Experimental data analysis and numerical problem solving (20%), Quiz/MCQs (20%), Internal Examinations (40%)

Source: Official Anna University – B.Tech. Chemical Engineering R-2025 Syllabus
Last Updated: October 2026