MMCS
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Maximum amplitude of second order system
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Okay, so far so good.MMCS said:
But you just sort of stopped. Is there a particular question that you had?
You've already found the derivative of the denominator. Set the derivative equal to 0 and solve for r. You'll find that there are two or three values of r that make the derivative go to 0, but not all of them are necessarily local minimums (there could be local maximums).
Once you find the appropriate expression for r that makes the denominator a minimum, plug that back into |H(jω)| and simplify.
