AP7 3 A compact disc player for portable use requires a good rejection of disturbances and an accurate position of the optical reader sensor The position control system uses unity feedback and a loop transfer function The parameter p can be chosen by selecting the appro priate DC motor Sketch the root locus as a function of p Select p so that the damping ratio of the complex roots of the characteristic equation is approximately 1 2 L(s) Ge(s)G(s) 1 p 0 (s3 20s2 150s 100) (s4 20s3 150s2 10s 5)

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AP7 3 A compact disc player for portable use requires a good rejection of disturbances and an accurate position of the optical reader sensor  The position control system uses unity feedback and a loop transfer function The parameter p can be chosen by selecting the appro priate DC motor  Sketch the root locus as a function of p   Select p so that the damping ratio of the complex roots of the characteristic equation is approximately     1 2  L(s)   Ge(s)G(s)  1 p   0    (s3 20s2  150s 100) (s4 20s3  150s2  10s 5)

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Question: AP7.3 A compact disc player for portable use requires a good rejection of disturbances and an accurate position of the optical reader sensor. The position

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