| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for easily adjusting the detection sensitivity of each gyro sensor and for correcting temperature. <P>SOLUTION: The drive side resonance frequency and detection side resonance frequency of a piezoelectric vibration gyro element for composing the gyro sensor are measured and the detuning frequency is obtained, and the amplification factor of the output signal of the piezoelectric vibration gyro element to desired detection sensitivity is determined, on the basis of the inverse proportional relationship between the detuning frequency and detection sensitivity of the piezoelectric vibration gyro element obtained in advance. Each detuning frequency is obtained at least at three different temperatures and the detection sensitivity is calculated, the temperature characteristics of the detection sensitivity obtained from it are approximated by a quadric curve, and the amplification factor of the output signal is corrected based on the quadric curve. Ambient temperature is measured by a temperature sensor and the output signal is amplified corresponding to the change in use. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
