D-07 - = 16 Vp(s) s(s+100)(s+1.32) s(s+100)(s+1.32) When a...

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Open-Loop Characteristics of the System           Power Amplifier      Motor and Load                Gear 0.2     0.8 s(s+1.32)   100 s+100    Vp(s)                                                                                 θ 0 (s) Figure 4:  Block diagram of the open-loop system The block diagram of the open-loop system is obtained by disconnecting the  feedback path of the closed-loop system. The transfer function of the open loop system is given as: θ 0 (s)  =    100 x 0.8 x 0.2  
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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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D-07 - = 16 Vp(s) s(s+100)(s+1.32) s(s+100)(s+1.32) When a...

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