What is a problem of my graph?(frequency response)

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SUMMARY

The discussion centers on discrepancies between a user's Bode plot generated in MATLAB and a reference plot from a paper. The user utilized a second-order vibration system as described in equation 18 of the paper. The primary issue identified is the difference in frequency representation; the user plotted against angular frequency (ω), while the paper plotted against frequency (f), resulting in a factor of 2π difference affecting the peak location of the graph.

PREREQUISITES
  • Understanding of Bode plots and frequency response analysis
  • Familiarity with MATLAB for data visualization
  • Knowledge of second-order systems and their equations
  • Concept of angular frequency (ω) versus frequency (f)
NEXT STEPS
  • Review MATLAB's plotting functions for frequency response analysis
  • Study the relationship between angular frequency and frequency, including the 2π factor
  • Examine second-order system dynamics and their impact on Bode plots
  • Explore additional resources on interpreting Bode plots in control systems
USEFUL FOR

Control engineers, signal processing specialists, and students studying frequency response analysis who are working with MATLAB and Bode plots.

gaus12777
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I have drawn a bode plot(freauency response), but it is not the same with one which is attatched in paper.
제목 없음.png


Using this data, I have drawn the graph using matlab.
afdasfafdfasf.png

I just put data into second order vibratoion system which is given in the paper(eq 18)

Peak location of graph in paper is just in front of 10^3 but the other is just in front of 10^4.
What is wrong?
 
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I think you are plotting vs ω, and the paper is plotting vs f, so there is a factor of 2π difference.
 
phyzguy said:
I think you are plotting vs ω, and the paper is plotting vs f, so there is a factor of 2π difference.
Thank you.
 

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