The characteristic equation of a feedback control system is given by Where k>0.
Nyquist plot of two functions G1(s) and G2(s) are shown below
Nyquist plot for product of G1(s) and G2(s) is
Consider the following statements regarding the unity negative feedback system and its Nyquist plot as shown below:
Select the correct statement(s) given below: S1: For k = 1, the closed-loop system will be stable when and only when the open-loop system is stable.
S2: For k = 100, the closed-loop system will be stable when and only when the open-loop system is stable.
The open loop of a unity feedback control system G(s) is unstable and has three poles on the right-hand side of the s-plane. However, the close loop system is stable. The number of encirclements mode by Nyquist plot of the (– 1, 0) point in the G(s) plane is
The pole-zero map and the Nyquist plot of the open-loop transfer function G(s) H(s) of a feedback system are shown below. For this