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Control SystemsTime Response

Using the common 2% criterion, the settling time of a standard underdamped second-order system is approximately?

  • A1/(ζωn)
  • B2/(ζωn)
  • C4/(ζωn)
  • Dπ/(ζωn)
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Correct Answer: C. 4/(ζωn)
Explanation: For the 2% settling band, Ts≈4/(ζωn) is a widely used approximation.
Reference: Standard control systems: time response
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