Question

le Edit View Win 5. A d.c. motor powered from an amplifier was set up in the laboratory and subjected to a step response test. The input to the amplifier was suddenly increased from 0 volts to 5 volts and the output speed of the motor was measured and plotted, see the attached Figure Q5 a. Draw a block diagram representation for the system. b. Judging from the plot of the step response, Figure Q5, what would you guess is the order of the system? c. Using this plot, and assuming it to be a First Order system, determine values for the overall system gain, K, and time constant, T. State the Transfer Function for the system. 1080 (1+29s) d. Verify that your model of the system is accurate by comparing the experimental response with the response predicted from theoretical analysis. (Plot the predicted response on Figure Q5.) Comparing the theoretical and experimental results, comment on the similarities and differences e. order EXPERIMENTAL PLOT-STEP RESPONSE OF A DC SERVO-MOTOR Time, seconds

Answer 1

matlab verification:

clc;

clear all;

close all;

s=tf('s');

g1=1/(20*s+1); % plant transfer function

step(54*g1);grid