Circuits & Controls (21EC43)

 Circuits & Controls

Course Code 21EC43
CIE Marks 50
Teaching Hours/Week (L: T: P: S) (3:0:2:0) 
SEE Marks 50
Total Hours of Pedagogy 40 hours 
Theory + 12 Lab slots 
Total Marks 100
Credits 04 
Exam Hours 03

Module-1

Basic concepts and network theorems Types of Sources, Loop analysis, Nodal analysis with independent DC and AC Excitations. (Textbook 1: 2.3, 4.1, 4.2, 4.3, 4.4, 10.6) Super position theorem, Thevenin’s theorem, Norton’s Theorem, Maximum Power transfer Theorem. (Textbook 2: 9.2, 9.4, 9.5, 9.7) RBT Level: L1, L2, L3

Module-2

Two port networks: Short- circuit Admittance parameters, Open- circuit Impedance parameters, Transmission parameters, Hybrid parameters (Textbook 3: 11.1, 11.2, 11.3, 11.4, 11.5) Laplace transform and its Applications: Step Ramp, Impulse, Solution of networks using Laplace transform, Initial value and final value theorem (Textbook 3: 7.1, 7.2, 7.4, 7.7, 8.4) RBT Level: L1, L2, L3

Module-3

Basic Concepts and representation: Types of control systems, effect of feedback systems, differential equation of physical systems (only electrical systems), Introduction to block diagrams, transfer functions, Signal Flow Graphs (Textbook 4: Chapter 1.1, 2.2, 2.4, 2.5, 2.6) RBT Level: L1, L2, L3

Module-4

Time Response analysis: Time response of first order systems. Time response of second order systems, time response specifications of second order systems (Textbook 4: Chapter 5.3, 5.4) Stability Analysis: Concepts of stability necessary condition for stability, Routh stability criterion, relative stability Analysis (Textbook 4: Chapter 5.3, 5.4, 6.1, 6.2, 6.4, 6.5) RBT Level: L1, L2, L3

Module-5

Root locus: Introduction the root locus concepts, construction of root loci (Textbook 4: 7.1, 7.2, 7.3) Frequency Domain analysis and stability: Correlation between time and frequency response and Bode plots (Textbook 4: 8.1, 8.2, 8.4) State Variable Analysis: Introduction to state variable analysis: Concepts of state, state variable and state models. State model for Linear continuous –Time systems, solution of state equations. (Textbook 4: 12.2, 12.3, 12.6) RBT Level: L1, L2, L3

PRACTICAL COMPONENT OF IPCC

Using suitable hardware and simulation software, demonstrate the operation of the following circuits:

Sl.No Experiments

1 Verification of Superposition theorem

2 Verification of Thevenin’s theorem

3 Speed torque characteristics of i)AC Servomotor ii) DC Servomotors

4 Determination of time response specification of a second order Under damped System, for different damping factors.

5 Determination of frequency response of a second order System

6 Determination of frequency response of a lead lag compensator

7 Using Suitable simulation package study of speed control of DC motor using

i) Armature control ii) Field control

8 Using suitable simulation package, draw Root locus & Bode plot of the given transfer function. Demonstration Experiments (For CIE only, not for SEE)

9 Using suitable simulation package, obtain the time response from state model of a system.

10 Implementation of PI, PD Controllers.

11 Implement a PID Controller and hence realize an Error Detector.

12 Demonstrate the effect of PI, PD and PID controller on the system response.

Suggested Learning Resources:
Text Books

1. Engineering circuit analysis, William H Hayt, Jr, Jack E Kemmerly, Steven M Durbin, Mc Graw Hill Education, Indian Edition 8e.

2. Networks and Systems, D Roy Choudhury, New age international Publishers, second edition.

3. Network Analysis, M E Van Valkenburg, Pearson, 3e.

4. Control Systems Engineering, I J Nagrath, M. Gopal, New age international Publishers, Fifth edition.

Web links and Video Lectures (e-Resources):

 https://nptel.ac.in/courses/108106098

 https://nptel.ac.in/courses/108102042

Activity Based Learning (Suggested Activities in Class)/ Practical Based learning Programming Assignments / Mini Projects can be given to improve programming skills