Patent ID: 7168289
Filing Date: 2007-01-30
Classification: G01C

Abstract:
1. A method of measuring a physical quantity using a vibrator, wherein said vibrator comprises our driving vibration arms, first and second detection vibration arms, films for adjusting a weight provided on said driving vibration arms, respectively, and detecting electrodes provided on each of said detection vibration arms, respectively, said method comprising the steps of: exciting a driving vibration in said vibrator; outputting output signals separately from each of said detecting electrodes based on a detection vibration excited in said vibrator responsive to said physical quantity; and comparing a frequency of said driving vibration to a frequency of said output signals; comparing an amplitude of said output signal from said first detection vibration arm with an amplitude of said output signal from said second detection vibration arm; comparing a phase of said output signal from said first detection vibration arm with a phase of said output signal from said second detection vibration arm; adjusting said weight of said film based on said comparisons of said frequencies, said amplitudes, and said phases.