Page 88 - basic control system
P. 88
CLOSED-LOOP POLES OF
FIRST-ORDER SYSTEM
❑ The closed-loop transfer function of a system is
given by
=
1 + ( )
❑ So the characteristic equation is :
1 + = 0
❑ For first-order equation :
1 + = 0
❑ From the equation, there is only one closed-loop
pole:
1
= −
❑ The pole-zero plot is as shown in the next figure
below:
65
