Root Locus Technique: Concept of root locus – Construction of root locus. UNIT – III: Stability Analysis in S-Domain: The concept of stability – Routh-Hurwitz’s stability criterion – qualitative stability and conditional stability – Limitations of Routh-Hurwitz’s stability. UNIT – II: Time Response Analysis: Standard test signals, Time response of first order systems, Characteristic Equation of Feedback control systems, Transient response of second order systems – Time domain specifications, Steady state response, Steady state errors and error constants.PID controllers: Effects of proportional derivative, proportional integral systems on steady state error.
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