Department of Electrical Engineering
EE321 Linear Systems I
Homework Assignment – Set 4 Due: 14 May (Monday)
1. The response of a LTI system to a step input, x(t) = U(t) is:
y(t) = (1 – e
-2t) U(t)
What is the response to an input of x)t) = 4U(t) – 4U(t-1) ?
2. Use properties to find the response of a system to an input as specified:
x(t) = 2U(t-10)
h(t) = sin(2t)U(t)
3. Determine the poles and zeros for the following transfer function and plot
them on the s-plane:
H(s) = [4s+1]/[s2
+ 4s +13]
4. Find the Transfer Function of:
x(t)
C1 C2
i2
i1
R1 R2
y(t)
-
-
+ +
C1 = C2 = 100 ?f , R1 = R2 = 1 k?
5. Draw the Bode Plot (magnitude and phase) of the Transfer Function
below. Use log-linear paper and an asymptote for each term.
(a) H(s) = [250(s + 20)] / [s (s+5)(s+10)]
(b) H(s) = 16/[(s+1)(s+8)]
(c) H(s) = [1000(s+1)]/(s+20)2
Document Preview: Department of Electrical Engineering
EE321 Linear Systems I
Homework Assignment – Set XXXXXXXXXXDue: 14 May (Monday)
1. The response of a LTI system to a step input, x(t) = U(t) is:
-2t
y(t) = (1 – e ) U(t)
What is the response to an input of x)t) = 4U(t) – 4U(t-1) ?
2. Use properties to find the response of a system to an input as specified:
x(t) = 2U(t-10)
h(t) = sin(2t)U(t)
3. Determine the poles and zeros for the following transfer function and plot
them on the s-plane:
2
H(s) = [4s+1]/[s + 4s +13]
4. Find the Transfer Function of:
R2
R1
+
+
i i
y(t)
1 2
x(t)
C2
C1
-
-
C1 = C2 = 100 ?f , R1 = R2 = 1 k?
5. Draw the Bode Plot (magnitude and phase) of the Transfer Function
below. Use log-linear paper and an asymptote for each term.
(a) H(s) = [250(s + 20)] / [s (s+5)(s+10)]
(b) H(s) = 16/[(s+1)(s+8)]
2
(c) H(s) = [1000(s+1)]/(s+20)