ABSTRACT
As shown in Fig. E.4, that in going from co = 0.5 to a> = 300 rad/sec the templates start to "droop" down to the right. This droop becomes more exaggerated if more template points are plotted from other unstable plants within Q. These unstable plants occur for this example, when the condition
(E.23) 1 kl2
is satisfied. This can be seen be partitioning the characteristic equation of Eq. (E.20) to yield L,l(l - yl2) = -1 for which a root-locus analysis can be made as the value of Y12 is varied The "very wide" characteristics of some of these templates can best be appreciated by the reader by plotting a positive and negative real pole (a and -a) in the s-plane. The reader is then urged to analyze the angular contribution of Z.[l + y (0/a)] and Z.[l + j(0 1-a)] as the frequency is varied from zero to infinity.
