Control Systems Engineering
7th Edition
ISBN: 9781118170519
Author: Norman S. Nise
Publisher: WILEY
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Chapter 11, Problem 10RQ
When designing a lag-lead network, what difference is there in the design of the lag portion as compared to a separate lag compensator?
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- A unity Feed back control system has its open-loop transfer function given by G(s) = 5+2 S(5+1) is subjected to unit step input. determine the Peak time and max overshoot tp=? 2 Mparrow_forwardCalculating the separation and / or joining angles in the negative feedback control circuit, if any, given as Controlling (K) and Controlled G (s) = (s + 1) / (s2-4 * s + 5) Explanation: The roots of the equation (s2-4 * s + 5); s1 = 2 + 1 * j and s2 = 2-1 * j and the system Transfer Function is TF (s) = K * G (s) / (1 + K * G (s)). a. There are split angles up to (+108.435) and (-108.435) b. There are split angles as much as (+71,565) and (-71,565) c. There are conjunction angles of (+90) and (-90). D. There are separation angles as much as (+18.435) and (-18.435). E. There are no separation and convergence angles.arrow_forwardWhy PID controller response is better than P and PI controller response on a level control system?arrow_forward
- The armature current of a de machine is controlled with a feedback loop. The following is known about the machine: KPWM = 12 (PWM converter gain) Te = 16 ms (electrical time constant) R = 2.0 2 (Armature resistance) %3D Assuming a PI controller that cancels the electrical time constant is used, what is the proportional time constant in terms of the integral time constant (Kp)? KI 16m K (16m K + 1) 1 16m 1) KI \1500arrow_forwardQ: Discuss the control system (the level controller and the temperature controllers) shown in figure (2). Specify the controlled and manipulated variable in each case. Discuss the type of the controller used in each case, that is, a simple feedback controller, a feedforward controller, a cascade controller, etc. Draw the block diagram of the temperature control loops. Feed Reactor temperature set point (master) TC Water surge tank i Jacket itemperature i set point (slave) TC LC-LT Reactor Cooling water out Product Cooling water makeup Circulation pump Figure (2)arrow_forwardThe armature current of a de machine is controlled with a feedback loop. The following is known about the machine: KPWM = 12 (PWM converter gain) Te = 16 ms (electrical time constant) R = 2.0 2 (Armature resistance) %3D Assuming a PI controller that cancels the electrical time constant is used, what is the proportional time constant in terms of the integral time constant (Kp)? KI 16m K (16m K + 1) 1 16m 1) KI \1500arrow_forward
- . the (b) A block diagram for arc welding process control in depicted as in Figure controller regulates the arc current, which results changes in the wire-melting process if error occurred. Determine the transfer function of this closed loop system. Controller Wire-melting process Are Desired Error K $ + 2 current Puddle diameter (0.5s + 1)(s + 1) diameter Measured Vision system diameter 0.005s + 1 Figurearrow_forwardA system with more than one input variable or more than one output variable is known by what name? Open loop feedback system O Robust control system O Multivariable control system O Closed loop feedback system,arrow_forwarda) Explain the basic components of closed loop system shown in figure (a) Error Detector Actuating Signal Input Output Controller Plant Error Signal Feedback Elements Feedback Signalarrow_forward
- 18- A)Define the following(i) Sensitivity (ii) Transfer function of closed loop control systemarrow_forward(PID solution with the requirements and simple explanation. Thx) INSTRUCTION: Given three bare processes develop a control system using feedbackand feedforward concept/principle. Your output is a process and instrumentationdiagram (P & ID) using ISA's Instrument Identification and Symbols standards withexplanation. PROCESS 2: The liquid level inside the tank is regulated at a value of 3.0 m on a condition ofcontinuous liquid inflow and outflow. Requirements: Two feedback solutions One feedforward solutionarrow_forwardQUESTION 3 An open loop transfer function with a unitary feedback control system is given K by G(s) =- where K is the gain of the system. An open loop (s+1)(s+4) transfer function with a PID controller must be designed in order to yield a peak time of 1.047 s, and a damping ratio of 0.8. 3.1. Calculate the design point s, of the system 3.2. Calculate the gain and the zero(s) of the PID controller 3.3. Provide the block diagram of the compensated system with the PID controllerarrow_forward
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