Consider the following statements for continuous-time linear time inva...
If a system is non-causal then a pole on right half of the s-plane can give BIBO stable system. But for a causal system to be BIBO all poles must lie on left half of the complex plane.
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Consider the following statements for continuous-time linear time inva...
Statement I: There is no bounded input bounded output (BIBO) stable system with a pole in the right half of the complex plane.
Explanation:
- A linear time invariant (LTI) system is said to be BIBO stable if every bounded input to the system produces a bounded output.
- The poles of an LTI system are the values of s for which the denominator of the transfer function becomes zero.
- The right half of the complex plane includes all values of s with positive real parts.
- If a system has a pole in the right half of the complex plane, it means that the system is unstable because it will have exponential growth in response to certain inputs.
- Therefore, a BIBO stable system cannot have a pole in the right half of the complex plane.
Statement II: There is non-causal and BIBO stable system with a pole in the right half of the complex plane.
Explanation:
- A non-causal system is one in which the output depends on future values of the input, which is not physically realizable.
- However, we can analyze non-causal systems mathematically.
- It is possible to have a non-causal and BIBO stable system with a pole in the right half of the complex plane.
- In this case, the system response will be bounded for all bounded inputs, but the system will not be physically realizable due to its non-causal nature.
Conclusion:
- From the explanations above, we can conclude that only Statement II is true.
- Statement I is false because a BIBO stable system cannot have a pole in the right half of the complex plane.
- Statement II is true because a non-causal and BIBO stable system can have a pole in the right half of the complex plane, although it is not physically realizable.