In the United States, billions of dollars are spent annually for solid waste collection

Chapter 0, Problem P9.19

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In the United States, billions of dollars are spent annually for solid waste collection and disposal. One system, which uses a remote control pick-up arm for collecting waste bags, is shown in Figure P9.19. The loop transfer function of the remote pick-up arm is L(s) = Gc(s)G(s) = 0.5 s(2s + l)(s + 4)' (a) Plot the Nichols chart and show that the gain margin is approximately 32 dB. (b) Determine the phase margin and the Mpo> for the closed loop. Also, determine the closed-loop bandwidth.

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