4.7. The electrohydraulic position control system shown in Fig. P-4.6 positions a mass M with negligible friction. Assum

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4 7 The Electrohydraulic Position Control System Shown In Fig P 4 6 Positions A Mass M With Negligible Friction Assum 1 (117.19 KiB) Viewed 10 times

4.7. The electrohydraulic position control system shown in Fig. P-4.6 positions a mass M with negligible friction. Assume that the rate of oil flow to the piston is q = KX – KP, where x is the control valve opening and p is the differential pressure. The mass of piston, oil compressibility and leakage are assumed negligible. Draw the signal flow graph of the system and obtain therefrom the transfer function Y(s)/X;(s). How the transfer function will modify if the mass Mis also negligible such that the differential pressure p needed to move the piston is nearly zero ? Power amplifier Outlet Inlet Outlet K X Kz Control valve Linear transducer www A у M Potentiometers Piston cylinder Fig. P-4.7