The loop gain of an elementary feedback control system (see Figure 3.4.12) is given by G(s)·H…

The loop gain of an elementary feedback control system (see Figure 3.4.12) is given by G(s)·H (s), which is 10/(1+s/2)(1+s/6)(1+s/50). Sketch the asymptotic Bode plot of the loop-gain function. Gain margin (GM) is defined by [−20 log |G(ω –  π ) H (ω – π )|], which is the negative of the magnitude of the loop gain at ω = ωπ , ωπ represents the angular frequency at which the loop gain reaches a phase of – π. If ωu represents the value of ω where the loop gain has a magnitude of unity, then phase margin (PM) is defined by the phase of the loop gain at ω = ωu plus π. Evaluate GM and PM for this case from the asymptotic Bode plot.

The loop gain of an elementary feedback control system (see Figure 3.4.12) is given by G(s)·H (s),...

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