Electronics and communication engineering



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UNIT-V


Power Amplifiers: Classification of amplifiers, Class A power Amplifiers and their analysis, Harmonic Distortions, Class B Push-pull amplifiers and their analysis, Complementary symmetry push pull amplifier, Class AB power amplifier, Class-C power amplifier, Thermal stability and Heat sinks, Distortion in amplifiers.


UNIT-VI


Tuned Amplifiers : Introduction, Q-Factor, small signal tuned amplifier, capacitance single tuned amplifier, double tuned amplifiers, effect of cascading single tuned amplifiers on band width, effect of cascading double tuned amplifiers on band width, staggered tuned amplifiers, stability of tuned amplifiers, wideband amplifiers.


Text Books:





  1. Integrated Electronics- J. Millman and C.C. Halkias, Tata Mc Graw-Hill, 1972.

  2. Electronic Devices and Circuits- Salivahanan, N.Suressh Kumar, A. Vallavaraj, TATA McGraw Hill, Second Edition



References:





    1. Electronic Circuit Analysis and Design – Donald A. Neaman, Mc Graw Hill.

    2. Electronic Devices and Circuits Theory – Robert L. Boylestad and Louis Nashelsky, Pearson/Prentice Hall, Tenth Edition.

    3. Electronic Circuit Analysis-B.V.Rao,K.R.Rajeswari, P.C.R.Pantulu,K.B.R.Murthy, Pearson Publications.

    4. Microelectronic Circuits-Sedra A.S. and K.C. Smith, Oxford University Press, Sixth Edition.






II Year - II Semester



CONTROL SYSTEMS

L T P C

4 0 0 3


Course objectives

  1. To introduce the concepts of open loop and closed loop systems, mathematical models of mechanical and electrical systems, and concepts of feedback




  1. To study the characteristics of the given system in terms of the transfer function and introducing various approaches to reduce the overall system for necessary analysis




  1. To develop the acquaintance in analyzing the system response in time-domain and frequency domain in terms of various performance indices




  1. To analyze the system in terms of absolute stability and relative stability by different approaches




  1. To design different control systems for different applications as per given specifications




  1. To introduce the concepts of state variable analysis, design and also the concepts of controllability and observability



UNIT-1


Introduction

System Control System, Open Loop Control System, Closed loop Control System, Different Examples


Mathematical models of Physical Systems


Differential equations of physical systems, Transfer functions, Block diagram Algebra, Signal flow graphs with illustrative examples

Effects of Feedback


Feedback Characteristics and its advantages, Linearizing effect of feedback

UNIT-2


Controller Components

DC Servomotor (Armature Controlled and Field Controlled) with necessary derivation for transfer function, AC Servomotor and its transfer function, AC Tachometer, Potentiometer, Synchros, AC Position Control Systems


Time Response Analysis


Standard test Signals, Time response of first and second order systems, steady state errors and error constants, Effect of adding a zero to a system, Design specifications of second order systems, Performance indices

UNIT-3


Concepts of Stability and Algebraic Criteria

The concept of Stability, Necessary Conditions for Stability, Routh-Hurwitz Srability Criterion, Relative stability analysis,


The Root Locus Technique


Introduction, The Root Locus concepts, Construction of Root Loci

UNIT-4


Frequency response analysis

Introduction, Correlation between time and frequency response, Polar Plots, Bode Plots, Nyquist Stability Criterion



UNIT-5


Introduction to Design

The design problem, Preliminary consideration of classical design, Realization of basic Compensators, Cascade compensation in time domain and frequency domain, Tuning of PID Controllers



UNIT-6


State Variable Analysis and Design

Introduction, Concepts of State, State Variables and State models, State models for linear continuous-time systems, State variables and linear discrete-time systems, Solution of state equations and Concepts of Controllability and Observability.



Text Book


I.J.Nagarath and M.Gopal, “ Control System Engineering,” New Age International Publishers, Fifth Edition

Reference Books


  1. Katsuhiko Ogata, “Modern Control Engineering,” Pearson, Fifth Edition

  2. S. Salivahanan, R. Rengaraj, and G. R. Venkata Krishnan, “ Control Systems Engineering,” Pearson, First Impression

  3. Benjamin C. Kuo, Frarid Golnaraghi, “ Automatic Control Systems,” Wiley Student Edition, Eigth Edition

  4. PadmaRaju and Reddy , “ Instrumentation and Control Systems “, McGrawHill Education ,2016



Course Outcomes


  1. This course introduces the concepts of feedback and its advantages to various control systems

  2. The performance metrics to design the control system in time-domain and frequency domain are introduced.

  3. Control systems for various applications can be designed using time-domain and frequency domain analysis.

  4. In addition to the conventional approach, the state space approach for the analysis of control systems is also introduced.






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