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ELL225

From IITD Wiki
ELL225
Control Engineering
Credits 4
Structure 3-1-0
Pre-requisites ELL205
Overlaps MCL212, CLL261

ELL225 : Control Engineering

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Introduction to the control problem, Control System Components: Sensors, Actuators, Computational blocks. Mathematical representation of systems, state variable model, linearization, transfer function model. Transfer function and state variable models of suitable mechanical, electrical, thermal and pneumatic systems. Closed loop systems, Block diagram and signal flow analysis, Basic Characteristics of feedback control systems: stability, steady-state accuracy, transient accuracy, disturbance rejection, sensitivity analysis and robustness. Basic modes of feedback control: Proportional, Integral, Derivative. Concept of stability, Stability criteria: Routh stability criterion, Mikhailov's criterion, Kharitonov theorem. Time response of 2nd order system, steady state error analysis. Performance specifications in the Courses of Study 2024-2025 Electrical Engineering 176time domain. Root locus method of design. Nyquist stability criterion. Frequency response analysis: Nyquist plots, Bode plots, Nichols Charts, Performance specifications in frequency domain, Frequency domain methods of design. Lead lag compensation.