CONTROL ENGINEERING (18ME71)

CONTROL ENGINEERING

Course Code 18ME71
CIE Marks 40
Teaching Hours / Week (L:T:P) 3:0:0
SEE Marks 60
Credits 03
Exam Hours 03

Course Learning Objectives:

 To develop comprehensive knowledge and understanding of modern control theory, industrial automation, and systems analysis.
 To model mechanical, hydraulic, pneumatic, and electrical systems.
 To represent system elements by blocks and their reduction techniques.
 To understand transient and steady-state response analysis of a system.
 To carry out frequency response analysis using polar plot, Bode plot.
 To analyse a system using root locus plots.
 To study different system compensators and characteristics of linear systems.

Module-1

Introduction: Components of a control system, Open-loop, and closed-loop systems. Types of controllers: Proportional, Integral, Differential, Proportional-Integral, and Proportional- Integral- Differential controllers. Modeling of Physical Systems: Mathematical Models of Mechanical, Electrical, Thermal, Hydraulic Systems.

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Module-2

Time-domain performance of control systems: Typical test signal, Unit step response and time domain specifications of first order, second-order system. Steady state error, error constants.

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Module-3

Block diagram algebra, Reduction of block diagram, Signal flow graphs, Gain formula for signal flow graphs, State diagram from differential equations.

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Module-4

Stability of linear control systems: Routh’s criterion, Root locus, Determination of phase margin and gain margin using root locus.

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Module-5

Stability analysis using Polar plot, Nyquist plot, Bode plot, Determination of phase margin and gain margin using Bode plot.

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Important Links:

Sample Questions

Assignment:

1.Study of On-Off Controller for Flow/ Temperature.
2. Study of Control Modes like P, PD, PI, PID for Pressure / Temperature / Flow.
3. Assignment on Root Locus, Bode Plots and Polar Plots.
4. Use of Software ‘MATLAB’ on the above topics.

Course Outcomes: At the end of the course, the student will be able to:

CO1: Identify the type of control and control actions.
CO2: Develop the mathematical model of the physical systems.
CO3: Estimate the response and error in response of first and second-order systems subjected to standard input signals.
CO4: Represent the complex physical system using block diagram and signal flow graph and obtain transfer function.
CO5: Analyse a linear feedback control system for stability using Hurwitz criterion, Routh’s criterion and root Locus technique in complex domain.
CO6: Analyse the stability of linear feedback control systems in frequency domain using polar plots, Nyquist and Bode plots.

Question paper pattern:

 The question paper will have ten full questions carrying equal marks.
 Each full question will be for 20 marks.
 There will be two full questions (with a maximum of four sub- questions) from each module.
 Each full question will have sub- question covering all the topics under a module.
 The students will have to answer five full questions, selecting one full question from each module.

Textbooks

1 Automatic Control Systems Farid G., Kuo B. C McGraw Hill Education 10th Edition,2018
2 Control systems Manik D. N Cengage 2017

Reference Books

1 Modern control Engineering K. Ogeta Pearson 5th Edition, 2010
2 Control Systems Engineering Norman S Nice Fourth Edition, 2007
3 Modern control Systems Richard C Dorf Pearson 2017
4 Control Systems Engineering IjNagrath, M Gopal New Age International (P) Ltd 2018
5 Control Systems Engineering S Palani Tata McGraw Hill Publishing Co Ltd ISBN-13 9780070671935