Consider a [2nd order?] transfer function likethanks t_n_k,
erm, is that every second order system will cause infinity gain margin?
thanks t_n_K, i got itConsider a [2nd order?] transfer function like
Which has a non-infinite gain margin but has an unbounded step response.
Considered in isolation, gain margin of itself doesn't tell us much about system stability - so a system could have an infinite gain margin but be unstable or unbounded in transient response.
For instance the transfer function
has infinite gain margin but has an unstable step response.
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by Jake Hertz