fb3_26

# fb3_26 - PROBLEM 3.26 KNOWN tgo 1001115 fd 12001-12 g = 0.8...

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Unformatted text preview: PROBLEM 3.26 KNOWN: tgo - 1001115 fd - 12001-12 g = 0.8 FIND: 8(1 Hz), 51 SOLUTION _ id = {nu - mm or fn = moo/(1 - 0.32)1/2 = zooonz The dynamic cmisgivenbysa) = M(f)— 1: F . HA2 M6) = 1/[(l - {f/fn}2)2 + (Zd/anIM = 1/I(1-{1/2000}2>2 + (2(3X1)/2000)2]°5 = 1.0 so 50 Hz) = 0.0. Thetimelagisgivenby w+k 9= 1 “E1 31 = ¢/2-f = [-mn'1 (Zd/an {1 - (f/fn)}2]/21f - 73 ms COMMENT The near zero dynamic error indiaites that the amplitude of the input signal KF(t) and the steady output signal are eqnaL The time lag indicates that the output signal appears at a time pl after the input signal is applied. ...
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