CONTROL SYSTEMS (CS)
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Important questions
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- Convert a mechanical system into a electrical system
- Lag,Lead ,Lag -lead compensators
- Deriving a Transfer function or Differnential equations of a system
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**Very important questions are bolded and may be asked based on this topic
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SYLLABUS
Sub code: EE3503
Sub name: CONTROL SYSTEMS
*Exam date:05/01/2024*
UNIT I
MODELING OF LINEAR TIME INVARIANT SYSTEM
Control system: Open loop and Closed loop Feedback control system characteristics First principle modeling: Mechanical, Electrical and Electromechanical systems Transfer function representations: Block diagram and Signal flow graph.
UNIT II
TIME DOMAIN ANALYSIS
Standard test inputs Time response Time domain specifications Stability analysis: Concept of stability Routh Hurwitz stability criterion Root locus: Construction and Interpretation. Effect of adding poles and zeros
UNIT III
FREQUENCY DOMAIN ANALYSIS
Bode plot, Polar plot and Nyquist plot: Frequency domain specifications Introduction to closed loop Frequency Response. Effect of adding lag and lead compensators.
UNIT IV
STATE VARIABLE ANALYSIS
State variable formulation Non uniqueness of state space model State transition matrix -Eigen values Eigen vectors Free and forced responses for Time Invariant and Time Varying Systems - Controllability Observability
UNIT V
DESIGN OF FEED BACK CONTROL SYSTEM
Design specifications Lead, Lag and Lag-lead compensators using Root locus and Bode plot techniques -PID controller Design using reaction curve and Ziegler-Nichols technique- PID control in State Feedback form.