System and Method for Wheel Disturbance Order Detection and Correction
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United States of America Patent
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Issued Date -
Apr 2, 2015
app pub date -
Mar 14, 2013
filing date -
Apr 5, 2012
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Abstract
An active nibble control (ANC) includes an anti-notch filter that increases the gain margin of the control and, therefore, greater disturbance rejection. The closed loop frequency response of the ANC is further enhanced by the addition of a lag-lead phase compensator filter. The addition of the lag-lead compensation filter allows use of the higher ANC gains at higher wheel frequencies to increase disturbance rejection, thereby compensating for anti-notch filter gain reduction with increasing wheel frequency. Similar results are obtained by adding a lag-lead phase compensator filter to a resonator filter in an active ANC.
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