The open-loop frequency response of a unity feedback system is given below: @ 1.0 0.15 130° 1.5 R(s) 0.36 1 |G(jw)| - ZG

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The Open Loop Frequency Response Of A Unity Feedback System Is Given Below 1 0 0 15 130 1 5 R S 0 36 1 G Jw Zg 1 (109.94 KiB) Viewed 38 times

The open-loop frequency response of a unity feedback system is given below: @ 1.0 0.15 130° 1.5 R(s) 0.36 1 |G(jw)| - ZG(jw) Sketch the inverse Nyquist plot and determine values of M, and w,. The configuration of feedback system is now changed to include derivative feedback as shown in Fig. P-9.15. Determine graphically the resultant frequency response and therefrom determine values of M, and @₁. Comment upon the effect of derivative feedback on system stability. C(s) 140° 2.0 + 0.55 148⁰ Fig. P-9.15 G(s) 2.5 0.2s 0.83 3.0 153⁰ 1.1 3.5 158° 1.43 4.0 160° 2.0 164°