Question: + For a second-order system with damping & and natural frequency wo, rise time is given by T = we/tano I don't know how

+ For a second-order system with damping & and natural frequency wo,

+ For a second-order system with damping & and natural frequency wo, rise time is given by T = we/tano I don't know how this formula is derived, I hope you can teach me. thx + - tr Wn 1- As a second-order system, I can understand and derive its rise time if it looks like the figure above. But obviously the textbook formula for rise time is not this. < Maybe it first discretizes the transfer function by z-transform before solving it, I'm not sure. This formula I have no way to understand at all, I hope you can help me to derive it

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