Bounded Output Bounded Input BIBO

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SUMMARY

The discussion focuses on determining the Bounded Input Bounded Output (BIBO) stability of the linear time-invariant (LTI) system represented by the transfer function \( H(s) = \frac{s - 2}{(s + 2)(s + 1)(s - 1)} \). It is established that for a system to be BIBO stable, all poles of the transfer function must have negative real parts. In this case, the presence of a pole at \( s = 1 \) indicates that the system is unstable, as it does not meet the stability condition.

PREREQUISITES
  • Understanding of Linear Time-Invariant (LTI) systems
  • Knowledge of transfer functions and their components
  • Familiarity with pole-zero analysis in control systems
  • Basic concepts of stability in control theory
NEXT STEPS
  • Study the concept of poles and zeros in control systems
  • Learn about the Routh-Hurwitz stability criterion
  • Explore the Nyquist stability criterion for LTI systems
  • Investigate the implications of BIBO stability in practical applications
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Control engineers, system analysts, and students studying control theory who need to understand the stability of LTI systems and apply BIBO criteria effectively.

Dustinsfl
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Can some show me how we show a LTI system is BIBO? I read the definition but it didn't help.

For example, how would we show if
\[
H(s) = \frac{s - 2}{(s + 2)(s + 1)(s - 1)}
\]
is BIBO stable or unstable?
 
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dwsmith said:
Can some show me how we show a LTI system is BIBO? I read the definition but it didn't help.

For example, how would we show if
\[
H(s) = \frac{s - 2}{(s + 2)(s + 1)(s - 1)}
\]
is BIBO stable or unstable?

The stability condition requires that the Transfer Function has all poles with negative real part... one of poles is in s=1 so that...

Kind regards

$\chi$ $\sigma$
 

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