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I need to know how to draw a Phase Bode plot of a Second order system.

I understand and can draw the Gain(Magnitude) Bode plot, but I can't seem to get the grip of the Phase one.

As far as I know there is an asymptote at 0[tex]^{o}[/tex] at low frequencies and an asymptote at 180[tex]^{o}[/tex] at high frequencies. But the transition between the two changes with damping factor.

Do any of you know the relationship between damping factor and the asymptotes so that I am able to draw an accurate Phase Plot of 2nd Order Systems?

Thanks guys

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# Bode Phase plot of a second order system

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