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Unformatted text preview: = 16 Vp(s) s(s+100)(s+1.32) s(s+100)(s+1.32) When a step voltage is applied to the input of the power amplifier Vp(s), the open-loop angular velocity response shows that the system is unstable as shown from the step response plot below. Figure 5: Open-loop angular velocity response to a step voltage. In order to find the damping ratio and natural frequency of the open-loop system, we examine the root locus plot of the open-loop system to determine which of the three poles the dominant pole is....
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- Fall '09