Control Systems - Compensators

Consider a lead compensator of the form $K(s) = \frac{1 + \frac{s}{a}}{1 + \frac{s}{\beta a}}, \beta > 1, a > 0$ The frequency at which this compensator produces maximum phase lead is 4 rad/s. At this frequency, the gain...

The transfer function of a phase lead compensator is given by D(s) = 3(s+1/(3T))/(s+1/T) The frequency (in rad/sec), at which ∠D(jω) is maximum, is

The transfer function C(s) of a compensator is given below. $C(s) = \frac{(1+\frac{s}{0.1})(1+\frac{s}{100})}{(1+s)(1+\frac{s}{10})}$ The frequency range in which the phase (lead) introduced by the compensator reaches th...