- #1
Cyrus
- 3,238
- 16
Can someone show me how they got this:
[tex]\frac{\omega_n^2}{-\omega^2+j2 \zeta \omega_n \omega}[/tex]
Has this phase:
[tex] -90-tan^{-1} \frac{ \omega}{2 \zeta \omega_n} [/tex]
Why isn't it simply:
[tex] 0 -tan^{-1} \frac{- 2 \zeta \omega_n}{ \omega} [/tex]
[tex]\frac{\omega_n^2}{-\omega^2+j2 \zeta \omega_n \omega}[/tex]
Has this phase:
[tex] -90-tan^{-1} \frac{ \omega}{2 \zeta \omega_n} [/tex]
Why isn't it simply:
[tex] 0 -tan^{-1} \frac{- 2 \zeta \omega_n}{ \omega} [/tex]