How to get the damping ratio of an underdamped response

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Priya
Priya 2014-3-19
评论： Priya 2014-3-19
I have got a step response which seems underdamped and I have also used the 'damp' function to retrieve the values of damping ratio. But I need to find by how much it is underdamped. Please help me in finding the level of damping.

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Arkadiy Turevskiy
Arkadiy Turevskiy 2014-3-19
Can you clarify your question? If you have the transfer function, damp will give you the damping factor, as you mention.
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Arkadiy Turevskiy
Arkadiy Turevskiy 2014-3-19
编辑：Arkadiy Turevskiy 2014-3-19
It does not matter. As long as you have a an LTI object (transfer function, state space, zpk), damp will give you a damping factor.

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