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Question: hard disk drives data head is moved to different positions...

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Problem-8 (20%) Hard disk drives data head is moved to different positions on the spinning disk, and rapid and accurate response is required as shown below Desired position Head dynamics Data head What is the closed-loop transfer function H(s)? (20.Determine the range of parameter a such that the closed loop system is stable. 30. Sketch the Bode plots of the open loop transfer function defined as the product of the and heads transfer function P(su 1As+4) Mark the Gain Margins and Phase Margins. For each case. draw on a for a 0.1 and a 10. different Bode plot grid paper. 4) Give fir) compute the steady state error between and fit for a 0.1 and a 10, respectively. (5.Discuss how to achieve zero steady state error between and f by revising the controller transfer function


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