1)
An uncertain plant P has its gain K and poles being uncertain. This plant P is to be controlled
so that the feedback system has two dominant poles, $p_{cl}, \bar{p}_{cl} = a \pm jb$. The allowed range of
a, b forms a finite rectangle close to plant open loop poles in the s-plane, as shown below.
Choose all right options that apply in this control design problem.
$p_{cl}$
Im(s)
XX
X
$p_3$
$\bar{p}_{cl}$
$p_2$ $p_1$
Re(s)
1-DOF controller is sufficient to meet this specification
2-DOF controller is sufficient to meet this specification
This problem can be solved systematically by using Root locus
This problem can be solved systematically by using Bode plots
This problem can be solved systematically by using Nyquist plots
This problem is easy to solve systematically by using Nichols
