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Hey,
I'm trying to find the gain margin for a system with a 1/s^2 term.
The gain margin is the change in open loop gain required at 180 deg of phase shift to make the closed loop system unstable.
The 1/s^2 term makes the phase -180 deg regardless so how do I graphically find the gain margin.
The transfer function is:
25(s+4) / (s^2 (s + 10)^2)
Thanks for your help!
I'm trying to find the gain margin for a system with a 1/s^2 term.
The gain margin is the change in open loop gain required at 180 deg of phase shift to make the closed loop system unstable.
The 1/s^2 term makes the phase -180 deg regardless so how do I graphically find the gain margin.
The transfer function is:
25(s+4) / (s^2 (s + 10)^2)
Thanks for your help!
