December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and SystemsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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SHORT QUESTIONS AND ANSWERS
Q1. What do you mean by stability?
If a linear time invariant system satisfies the following conditions:
- even after excitation by a bounded input, output must be bounded, and
- in the absence of input, output must be zero despite the initial conditions,
the system is said to be stable.
Q2. State Hurwitz’s criterion and give its disadvantages.
Hurwitz had given the sufficient conditions for having all roots of the characteristic equation in left half of s-plane.
The disadvantages of the Hurwitz’s criterion are:
- It is very complicated and time consuming for solving higher order systems.
- This method is unable to judge the exact number of poles located in right half of s-plane.
- It is very tough to predict marginal stability. ...
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