Consider the problem of 9.1 and assume that the system is in the oscillating status. Determine the angular frequency of the oscillations.

1) \(1 \mathrm{rad} / \mathrm{sec}\)
2) \(\sqrt{2} \mathrm{rad} / \mathrm{sec}\)
3) \(\sqrt{3} \mathrm{rad} / \mathrm{sec}\)
4) \(4 \mathrm{rad} / \mathrm{sec}\)

Data from problem  9.1 

Figure 9.1 illustrates the root locus of a control system with a negative unity feedback (for k > 0). Determine the maximum value of loop gain so that the closed-loop system is stable.

Figure  9.1

Transcribed Image Text:

6 2 Imaginary Axis (seconds) -8 -6 -4 -2 0 Real Axis (seconds) 2