EBK PRINCIPLES OF ELECTRIC CIRCUITS
10th Edition
ISBN: 9780134879499
Author: Buchla
Publisher: YUZU
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Exercise 3-12: Find the Thévenin equivalent of the circuit
to the left of terminals (a, b) in Fig. E3.12, and then
determine the current I.
502
502
0.6 Ω
20 V
| +
<302
Ω
ΣΙΩ
b
2025
Ω
15A
Figure E3.12
2. Consider following feedback system.
r(t)
e(t)
y(t)
K
G(s)
1
where G(S)
=
s²+as+b
In above, K, a and b are constants. Select the values of K, a and b in a way so that
(i)
(ii)
(iii)
the closed loop system is stable,
steady-state error of the closed-loop system for step input is 0.2,
the closed-loop response has 20% overshoot and 2 seconds as settling time.
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