What is stability of control system ? Stability refers to the ability of a closed-loop system to maintain a state of equilibrium or to return to that state after being subjected to disturbances or changes. A stable control system is one in which the output remains bounded and does not
Routh-Hurwitz Stability Criterion The Routh-Hurwitz Stability Criterion is a mathematical technique employed to ascertain whether a polynomial’s roots lie on the left-hand side of the s-plane. It is a valuable tool as it allows one to assess the stability of a system without finding the roots of the characteristic equation.
Identifying positive feedback system, Transfer function of positive feedback system, Exponential growth, Runaway, Snowball effect
What is a control system? Types of control system, Open loop and closed loop control system, Advantages and disadvantages of different control system
Definition of PID control, Steady state error, Overshoot and ringing, Proportional-integral control, MATLAB modeling
The Barkhausen criterion is a mathematical condition to determine oscillation frequency. Sometimes it is also used to determine if the circuit is stable or not.
Nyquist contour, Nyquist stability criteria, Understanding Nyquist stability criteria using simple examples, Behaviour of poles and zeros in Nyquist plot, Procedure to draw Nyquist plot
How to use a root locus plot, Concepts of root locus, Starting and end points of root-locus, Asymptotes of root locus, Angle and centroid, Angle and magnitude criteria, Root locus rules
Stability in control system, BIBO stable, Marginal Stable Unstable systems, Dominant and non-dominant poles, Phase margin and Gain Margin, Gain crossover frequency and Phase crossover frequency
Negative feedback system, Advantages and disadvantages, Transfer function
What is a bode plot? A Bode plot is a graphical representation of a closed-loop system’s loop-gain LG(s) frequency response. It is a widely used tool in control systems engineering, electronics, and signal processing to analyze and design closed-loop linear time-invariant (LTI) systems. Bode plots provide insights into how a