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专利名称：METHOD AND APPARATUS FOR ADAPTIVE
GAIN BALANCING OF AT LEAST ONE OFTWO ROTATIONAL SENSORS IN A HARDDISK DRIVE
发明人：Brian K. Tanner申请号：US12414629申请日：20090330
公开号：US20100246052A1公开日：20100930
专利附图：
摘要：A hard disk drive and its circuit board and an integrated circuit are disclosed
using two piezoelectric devices each having one terminal used to generate signal. Thefirst signal goes to one input of a differential amplifier. The second signal goes to anamplifier whose gain is controlled to create an amplified second signal for the differentialamplifier whose output and the first and second signals create a selected signal receivedby an A/D converter to create a sampled signal used to create a linear disturbance signaland/or a rotational compensation signal, which in turn are used to control the gain of theamplifier to minimize a PES envelope and/or a harmonic PES envelope either in calibrationor normal operation of the hard disk drive.
申请人：Brian K. Tanner
地址：San Jose CA US
国籍：US
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