JNTUH Control Systems syllabus EC 3-1 Sem R18 EC503PC

Unit-1 Introduction to Control Problem

Introduction to Control Problem:

Industrial Control examples. Mathematical models of physical systems. Control hardware and their models. Transfer function models of linear time-invariant systems. Feedback Control: Open-Loop and Closed-loop systems. Benefits of Feedback. Block diagram algebra.

Unit-2 Time Response Analysis of Standard Test Signals

Time Response Analysis of Standard Test Signals:

Time response of first and second order systems for standard test inputs. Application of initial and final value theorem. Design specifications for secondorder systems based on the time-response. Concept of Stability. Routh-Hurwitz Criteria. Relative Stability analysis. Root-Locus technique. Construction of Root-loci.

Unit-3 Frequency-Response Analysis

Frequency-Response Analysis:

Relationship between time and frequency response, Polar plots, Bode plots. Nyquist stability criterion. Relative stability using Nyquist criterion – gain and phase margin. Closed-loop frequency response.

Unit-4 Introduction to Controller Design

Introduction to Controller Design:

Stability, steady-state accuracy, transient accuracy, disturbance rejection, insensitivity and robustness of control systems. Root-loci method of feedback controller design. Design specifications in frequency-domain. Frequency-domain methods of design. Application of Proportional, Integral and Derivative Controllers, Lead and Lag compensation in designs. Analog and Digital implementation of controllers.

Unit-5 State Variable Analysis and Concepts of State Variables

State Variable Analysis and Concepts of State Variables:

State space model. Diagonalization of State Matrix. Solution of state equations. Eigen values and Stability Analysis. Concept of controllability and observability. Pole-placement by state feedback. Discrete-time systems. Difference Equations. State-space models of linear discrete-time systems. Stability of linear discrete-time systems.

 

TEXT BOOKS:

1. M. Gopal, “Control Systems: Principles and Design”, McGraw Hill Education, 1997.

2. B. C. Kuo, “Automatic Control System”, Prentice Hall, 1995.

 

REFERENCE BOOKS:

1. K. Ogata, “Modern Control Engineering”, Prentice Hall, 1991.

2. I. J. Nagrath and M. Gopal, “Control Systems Engineering”, New Age International, 2009.

 

Course Outcomes:

At the end of this course, students will demonstrate the ability to

  • Understand the modeling of linear-time-invariant systems using transfer function and statespace representations.
  • Understand the concept of stability and its assessment for linear-time invariant systems.
  • Design simple feedback controllers.