Could Anyone Help Explain Bode Plots Please ?
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Posted by: tom1362 ® 11/10/2009, 03:09:08 Author Profile eMail author Edit

Hi , I'm having some difficulty in interpreting bode plots of Magnitude & Phase for Frequency Responses. Could anyone shed some light on this for me ? Much appreciated

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: Could Anyone Help Explain Bode Plots Please ?
: Could Anyone Help Explain Bode Plots Please ? -- tom1362	Post Reply	Top of thread	Engineering Forum

Posted by: zekeman ® 11/12/2009, 00:01:30 Author Profile eMail author Edit

Basically it is a simplified log-log plot of magnitude vs frequency function usually called a transfer function. The plot has breaks (slope discontinuities) at each of the poles and zeros of the transfer function; As the frequency increases,the slope changes by +6 db per octave each time the frequency passes a zero of the function and - 6db per octave for each pole of the transfer function. The plot is actually the asymtotes of the actual log-log plot. It is often used for stability analysis in control systems. If you have a specific aplication, we could give you more insight.

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