The transfer function of a phase-lead controller is given by
A. (1+aTs)/(1+Ts) , a>1 T>0
B. (1+aTs)/(1+Ts) , a<1 T>0
C. (1-aTs)/(1+Ts) , a>1 T>0
D. (1±Ts)/(1+Ts) , a<1 T>0
Answer:A
The transfer function of a phase-lead controller is given by
A. (1+aTs)/(1+Ts) , a>1 T>0 B. (1+aTs)/(1+Ts) , a<1 T>0 C. (1-aTs)/(1+Ts) , a>1 T>0 D. (1±Ts)/(1+Ts) , a<1 T>0
Explanation: For the phase lead controller in which the stability and speed of response is more for the system, the magnitude of the pole must be greater than the magnitude of the zero.