Read the QNET On-Off and PID Control (DC Motor Speed Control) background material in the PDF document on Moodle The speed of the DC motor is controlled using a proportional-integral control system. The block diagram of the closed-loop system is shown below. к y=e Ts+1 DC Motor PI speed control closed-loop block diagram 2(s) К G(s) The transfer function representing the DC motor speed-voltage relation The input-output relation in the time-domain for a PI controller with set-point weighting is: is used to design the PI controller k,(r-y) u-k, (br-y)+ sp where k, is the proportional gain, ki is the integral gain, and bn is the set-point weight (refer to background reading) Note: There is no tachometer sensor present on the QNET DC motor system that measures the speed. Instead the amplifier board has circuitry that computes the derivative of the encoder signal, i.e. a digital tachometer. However to minimize the noise of the measured signal and increase the overall robustness of the system, the following first-order low-pass filter is used: m,meas T,s+ Parameter Tyis the filter time constant that determines the cutoff frequency and mmeas is the measured speed signal

Read the QNET On-Off and PID Control (DC Motor Speed Control) background material in the PDF document on Moodle The speed of the DC motor is controlled using a proportional-integral control system. The block diagram of the closed-loop system is shown below. к y=e Ts+1 DC Motor PI speed control closed-loop block diagram 2(s) К G(s) The transfer function representing the DC motor speed-voltage relation The input-output relation in the time-domain for a PI controller with set-point weighting is: is used to design the PI controller k,(r-y) u-k, (br-y)+ sp where k, is the proportional gain, ki is the integral gain, and bn is the set-point weight (refer to background reading) Note: There is no tachometer sensor present on the QNET DC motor system that measures the speed. Instead the amplifier board has circuitry that computes the derivative of the encoder signal, i.e. a digital tachometer. However to minimize the noise of the measured signal and increase the overall robustness of the system, the following first-order low-pass filter is used: m,meas T,s+ Parameter Tyis the filter time constant that determines the cutoff frequency and mmeas is the measured speed signal

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.2P

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