BME 639 Lecture Notes - Lecture 4: Step Response
18 Oct 2017
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Trise ess(st (0 10 e 2% (10 9 ep)% 4. 5 solutions to selected examples in this chapter. Consider a unit step response of an unknown control system as shown. Find the system step response specifications, i. e. read the specs off the plot: Solution (as read off the plot): (cid:883)(cid:882)(cid:882)% (cid:883). (cid:884)(cid:883) (cid:882). (cid:890) (cid:883)(cid:882)(cid:882)% (cid:887)(cid:883). (cid:884)% You can read the required values off the plot, as before. Hint: however, if you have the numerical values of the experimental data, (t,y), then you can use matlab to do this work for you. Similarly, if you happen to know the system transfer function g(s), you can generate data, then use. To do so, download from the website a zipped ele639 toolbox file and extract two subroutines: stepeval. m and rampeval. m and use them to find the specs. In this example, if you had access to numerical values of (t,y), you would see the following matlab output for this evaluation:
