B-4-10. Consider the liquid-level control system shown inWe assume that the velocity of the power piston (valve)dydtFigure 4-52. The inlet valve is controlled by a hydraulic is proportional to pilot-valve displacement x. orintegral controller. Assume that the steady-state inflow rateis and steady-state outflow rate is also, the steady-statehead is , steady-state pilot valve displacement is X = 0,and steady-state valve position is Y. We assume that the setpoint R corresponds to the steady-state head H. The setpoint is fixed. Assume also that the disturbance inflow rate94, which is a small quantity, is applied to the water tank att = 0. This disturbance causes the head to change from H toH+h. This change results in a change in the outflow rateby qo. Through the hydraulic controller, the change in headcauses a change in the inflow rate from Q to Q + q. (Theintegral controller tends to keep the head constant as muchas possible in the presence of disturbances.) We assume thatall changes are of small quantities.=K₁.xwhere K, is a positive constant. We also assume that thechange in the inflow rate q; is negatively proportional to thechange in the valve opening y, or9i= -Krywhere K, is a positive constant.Assuming the following numerical values for the system,C = 2m², R = 0.5 sec/m²,1 m²/sec=a = 0.25 m.b = 0.75 m.obtain the transfer function H(s)/Q(s)|K₂K₁=4 sec¹

Consider the liquid-level control system shown in Figure 4−59.4−59. The inlet valve is controlled by…

B-4-10. Consider the liquid-level control system shown in Figure 4-52. The inlet valve is controlled by a hydraulic integral controller. Assume that the steady-state inflow rate is and steady-state outflow rate is also Q, the steady-state head is H, steady-state pilot valve displacement is X = 0, and steady-state valve position is Y. We assume that the set point R corresponds to the steady-state head H. The set point is fixed. Assume also that the disturbance inflow rate 94, which is a small quantity, is applied to the water tank at = 0. This disturbance causes the head to change from to H+h. This change results in a change in the outflow rate by qo. Through the hydraulic controller, the change in head causes a change in the inflow rate from 0 to + q. (The integral controller tends to keep the head constant as much as possible in the presence of disturbances.) We assume that all changes are of small quantities.

B-4-10. Consider the liquid-level control system shown in Figure 4-52. The inlet valve is controlled by a hydraulic integral controller. Assume that the steady-state inflow rate is and steady-state outflow rate is also Q, the steady-state head is H, steady-state pilot valve displacement is X = 0, and steady-state valve position is Y. We assume that the set point R corresponds to the steady-state head H. The set point is fixed. Assume also that the disturbance inflow rate 94, which is a small quantity, is applied to the water tank at = 0. This disturbance causes the head to change from to H+h. This change results in a change in the outflow rate by qo. Through the hydraulic controller, the change in head causes a change in the inflow rate from 0 to + q. (The integral controller tends to keep the head constant as much as possible in the presence of disturbances.) We assume that all changes are of small quantities.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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