P4.11 One important objective of the paper-making process is tomaintain uniform consistency of the stock output as it progresses todrying and rolling. A diagram of the thick stock consistency dilutioncontrol system is shown in Figure P4.11(a). The amount of water addeddetermines the consistency. The block diagram of the system is shown inFigure P4.11(b). Let H(s) = 1 andGe(s) =Figure P4.11Paper-making control.PulpmixingDetermine (a) the closed-loop transfer function T(s) = Y(s)/R(s), (b)the sensitivity S, and (c) the steady-state error for a step change in thedesired consistency R(s) = A/s. (d) Calculate the value of K requiredfor an allowable steady-state error of 4%.WaterValveR(s)K20s + 1¹Desired consistency = R(s)U(s)Controller(a)G,(s)M(s)G (s) =(b)U(s)M(s)G(s)13s +1H(s)ConsistencymeasurementY(s)Topapermaking

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P4.11 One important objective of the paper-making process is to maintain uniform consistency of the stock output as it progresses to drying and rolling. A diagram of the thick stock consistency dilution control system is shown in Figure P4.11(a). The amount of water added determines the consistency. The block diagram of the system is shown in Figure P4.11(b). Let H(s) = 1 and Ge(s) = gure P4.11 per-making control. Pulp mixing Determine (a) the closed-loop transfer function T(s) = Y(s)/R(s), (b) the sensitivity S, and (c) the steady-state error for a step change in the desired consistency R(s) = A/s. (d) Calculate the value of K required for an allowable steady-state error of 4%. Water Valve R(s) K 20s + 1¹ Desired consistency = R(s) U(s) Controller (a) G(s) M(s) G (s) = (b) U(s) M(s) G(s) 1 3s + 1 H(s) Consistency measurement Y(s) To paper making

P4.11 One important objective of the paper-making process is to maintain uniform consistency of the stock output as it progresses to drying and rolling. A diagram of the thick stock consistency dilution control system is shown in Figure P4.11(a). The amount of water added determines the consistency. The block diagram of the system is shown in Figure P4.11(b). Let H(s) = 1 and Ge(s) = gure P4.11 per-making control. Pulp mixing Determine (a) the closed-loop transfer function T(s) = Y(s)/R(s), (b) the sensitivity S, and (c) the steady-state error for a step change in the desired consistency R(s) = A/s. (d) Calculate the value of K required for an allowable steady-state error of 4%. Water Valve R(s) K 20s + 1¹ Desired consistency = R(s) U(s) Controller (a) G(s) M(s) G (s) = (b) U(s) M(s) G(s) 1 3s + 1 H(s) Consistency measurement Y(s) To paper making

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.9MCQ

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