Neper freq, Damping factor, ratio, coefficient confusion.

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SUMMARY

The discussion centers on the confusion surrounding the definitions of damping factor, damping coefficient, and damping ratio in the context of RLC circuits. The neper frequency is often misidentified as either the damping factor or coefficient, leading to contradictions in terminology. The user highlights discrepancies in the representation of zeta, which can refer to different frequency ratios depending on the context, specifically between corner frequency and resonant radian frequency. The need for clear, definitive sources on these terms is emphasized.

PREREQUISITES
  • Understanding of RLC circuit dynamics
  • Familiarity with frequency domain analysis
  • Knowledge of Bode plots and their components
  • Basic grasp of control systems terminology
NEXT STEPS
  • Research the definitions and applications of damping factor, coefficient, and ratio in RLC circuits
  • Study the relationship between neper frequency and resonant radian frequency
  • Learn about the significance of zeta in control systems and its variations
  • Explore authoritative textbooks or resources on circuit theory for consistent terminology
USEFUL FOR

Electrical engineers, students studying circuit theory, and professionals involved in control systems who seek clarity on damping terminology and its applications in RLC circuits.

Loudhvx
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Hi all, this is my first post.

I find a lot of conflicting definitions of damping factor, damping coefficient, and damping ratio on the internet, and in some textbooks, when related to RLC circuits.

Sometimes I see the neper frequency described as the damping factor or damping coefficient. However, I sometimes see the ratio of the neper frequency to the resonant radian frequency described as the damping factor, damping coefficient, or damping ratio. This would be a contradiction, correct?

Sometimes when I see the damping factor, coefficient, or ratio represented by zeta, then it's the neper frequency over the corner frequency for a bode plot, but occasionally I will see zeta as the neper frequency over the resonant radian frequency. I don't think the two are one in the same, are they?

I realize some of this is due to loose useage of definitions and terms, but because some of it is outright contradictory, I need some clarification.

Can anyone point me to a site or source that adresses these discrepancies specifically, or at least has a definitive description of the terms in question? I've been to dozens of websites (and checked a couple textbooks) and there seems to be no agreement on the terms.

Thanks.
 
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