发明名称 Angular sensor and drive feedback for adjusting error
摘要 The present invention relates to a method for nulling drive feedthrough error in a sensor having first and second drive electrodes which impart vibratory motion to first and second proof masses in response to first and second opposite phase drive signals, and having first and second capacitances defined between the drive electrodes and their associated proof masses. A mismatch between the first and the second capacitance is measured. Drive feedthrough caused by the measured capacitance mismatch is nulled by adjusting the relative amplitudes of the first and second opposite phase drive signals, whereby the ratio of the amplitudes is proportional to the ratio of the first and second capacitances. A servo loop may adaptively effect the ratio of amplitudes.
申请公布号 AU8538701(A) 申请公布日期 2002.02.13
申请号 AU20010085387 申请日期 2001.07.31
申请人 THE CHARLES STARK DRAPER LABORATORY, INC. 发明人 PAUL A. WARD
分类号 G01C19/5719 主分类号 G01C19/5719
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