Consider the circuit shown in FigureP4.50 in which the switch is open for a long time prior to t = 0. The initial current is i s ( 0 + ) = 0. Write the differential equation for i s ( t ) and use MATLAB to plot i s ( t ) for t ranging from 0 to 80 ms [Hint: Avoid using lowercase “i” as the first letter of the dependent variable. instead use “Is” for the current inMATLAB.]
Consider the circuit shown in FigureP4.50 in which the switch is open for a long time prior to t = 0. The initial current is i s ( 0 + ) = 0. Write the differential equation for i s ( t ) and use MATLAB to plot i s ( t ) for t ranging from 0 to 80 ms [Hint: Avoid using lowercase “i” as the first letter of the dependent variable. instead use “Is” for the current inMATLAB.]
Solution Summary: The author explains how to find the expression in the matlab program and plot it for given interval.
Consider the circuit shown in FigureP4.50 in which the switch is open for a long time prior to t = 0. The initial current is
i
s
(
0
+
)
=
0.
Write the differential equation for
i
s
(
t
)
and use MATLAB to plot
i
s
(
t
)
for t ranging from 0 to 80 ms [Hint:Avoid using lowercase “i” as the first letter of the dependent variable. instead use “Is” for the current inMATLAB.]
a) Write down the order of the transfer function in each of the following cases. Assume that
there are no terms in the numerator that will cancel terms in the denominator.
10
H(s)
H(s)
=
s+1
5
(s+3)(s—. 4)
4s1
5
H(s)
=
H(s)
-
83 +1
s27s
6
H(s)
H(s)
=
s(s²+4s)
2s27s+1
84583882 +3s+2
H(s)
83 +8
s+1
=
H(s)
s34s26s+5
s52s4383 + 4s2 +5s +6
Question 5 (
A system is found to have zeros of -3 and poles of 4, and -2. The system also has a gain of
4. Write out the corresponding transfer function.
Question 6.
A system has a transfer function of
What is the gain, K, of the system?
Question 7 (
A system has a transfer function of
H(s)
-
4
8+5
H(s):
=
4
8 +5
A step input of size 3 is applied to the system at time zero (Since we're dealing with transfer
functions, x(0) is also zero at time zero).
a) [10] What is the response ✗(s) of the system?
b) [10] Derive the time dependent solution, x(t), of this response
Chapter 4 Solutions
Electrical Engineering: Principles & Applications, Student Value Edition Plus Mastering Engineering with Pearson eText -- Access Card Package (7th Edition)
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