題組內容

Problem 2 (22%) Consider a control system with the following loop transfer function
61a5b25b17ff5.jpg
whose Nyquist path is shown in Fig. 2.
61a5b28859ff0.jpg

(a) I. (6%) Sketch the Nyquist plot of this system for K ＞ 0 in accordance with Fig. 2.
Ⅱ. Indicate clearly each mapping of point a:(2%)(0+jω,ω→∞+), b:(2%)(0+jω,ω→2+), c:(2%) (61a5b31d07e9c.jpg),d:(2%) (0+jω,ω→2-) and e:(2%) (ω= 0) in your plot.