EE25C07 Control Systems – Semester IV – EEE / EEE(Comp) – R-2025

Subject Code & Name: EE25C07 – Control Systems

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B.E. Electrical and Electronics Engineering (EEE) / B.E. Electrical and Computer Engineering (EEE(Comp))

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

Course Objectives

• The objective of this course is to equip students with a fundamental understanding of control systems by modelling physical systems using transfer functions and state-space methods.
• The course aims to develop analytical skills to evaluate system behavior in both time and frequency domains, assess system stability, and design appropriate controllers and compensators to meet desired performance specifications.
• Through theoretical concepts and design techniques, students will gain the ability to model, analyse, and control dynamic systems effectively.

Full Unit-wise Syllabus

Unit I – Transfer Function Modelling of the Physical Systems

Systems - open and closed loop systems configurations - Modelling: electrical, mechanical and electro- mechanical systems - Block Diagram Reduction techniques-Signal Flow Graph.

Unit II – Time Domain Analysis of the System

Standard test signals - Time response analysis of first and second order systems – Time domain specifications - Steady State Error - Generalized error series.

Unit III – Stability Analysis and Root Locus

Routh Hurwitz Criteria - Root Locus: concepts and construction rules - Effect of addition of poles and Zeros – Analysis of system using Root Locus.

Unit IV – Frequency Domain Analysis of the System

Frequency domain analysis - specifications -Correlation between time domain and frequency domain –Open loop frequency response: Bode Plot - Polar Plot.

Unit V – State Space Analysis of the System

State Space model Representation – State space from transfer function: Phase variable, Canonical variable – Block diagram representation of state space model – Solution of state equations – controllability, observability and stability analysis of the system.

Unit VI – Design Of Compensator and Controller

Design specifications - Compensator network and types - Design of Lag compensator, Lead Compensator and Lag-Lead Compensator using Bode plot – PID control algorithms - Ziegler-Nichols based PID controller design - Design of State Feedback controller using pole placement.

Tasks

• T1: Derive the transfer function of: RLC series circuit
• T2: Model a DC motor and derive transfer function relating: Armature voltage → Angular speed
• T3: Study effect of damping ratio on:; Overshoot; Peak time; Settling time
• T4: Determine gain range for stability using root locus.
• T5: Design lead compensator using Bode plot for improved transient response.

Course Outcomes (COs)

• CO1: Model physical systems using transfer function and block diagram representations.
• CO2: Analyze system performance in time and frequency domains and evaluate stability using appropriate techniques.
• CO3: Apply root locus and frequency response methods for stability analysis and system design.
• CO4: Design controllers and compensators using classical and state-space techniques to meet desired specifications.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Assignments (20%), Solution to application-oriented problems using software (20%), Review of GATE questions (20%), Internal Examinations (40%)

Source: Official Anna University – B.E. Electrical and Electronics Engineering R-2025 Syllabus
Last Updated: October 2026