EXAMPLE 2 An Electrical Network Solve the system in (5) under the conditions E(t) = 60 V, L = 1 h, R = 50 N, C = 10¬4 f, and the currents i¡ and iz are initially zero. %3D SOLUTION We must solve di + 50i, = 60 dt diz 50(10-4) + iz – i = 0 dt subject to i (0) = 0, i2(0) = 0. Applying the Laplace transform to each equation of the system and simplifying gives %3D 60 sl(s) + 501,(s) S -2001 (s) + (s + 200)I¿(s) = 0, where 1,(s) = L{i(t)} and I½(s) decomposing the results into partial fractions gives L{i>(t)}. Solving the system for I and I2 and 60s + 12,000 6/5 6/5 60 1 (s) : s(s + 100)² s + 100 (s + 100)² 12,000 6/5 6/5 120 I(s) s(s + 100)² s + 100 (s + 100)²" S Taking the inverse Laplace transform, we find the currents to be 6. i;(t) 6. -100t е 60te-100t - 5 6. iz(t) 5 -100t е 5 120te-100t - -
EXAMPLE 2 An Electrical Network Solve the system in (5) under the conditions E(t) = 60 V, L = 1 h, R = 50 N, C = 10¬4 f, and the currents i¡ and iz are initially zero. %3D SOLUTION We must solve di + 50i, = 60 dt diz 50(10-4) + iz – i = 0 dt subject to i (0) = 0, i2(0) = 0. Applying the Laplace transform to each equation of the system and simplifying gives %3D 60 sl(s) + 501,(s) S -2001 (s) + (s + 200)I¿(s) = 0, where 1,(s) = L{i(t)} and I½(s) decomposing the results into partial fractions gives L{i>(t)}. Solving the system for I and I2 and 60s + 12,000 6/5 6/5 60 1 (s) : s(s + 100)² s + 100 (s + 100)² 12,000 6/5 6/5 120 I(s) s(s + 100)² s + 100 (s + 100)²" S Taking the inverse Laplace transform, we find the currents to be 6. i;(t) 6. -100t е 60te-100t - 5 6. iz(t) 5 -100t е 5 120te-100t - -
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
The example 2 on page 297 solves a system of equations for an electrical network. Analyze it and describe the steps taken for the solution (please write it in the computer step by step, like "step 1-...") you only have to write the steps, don't solve it.
Book: Differential equations with boundary problems (7th edition)
Topic: Laplace Transform
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,