Title:
静電的整列および同調を有するクローバーリーフマイクロジャイロスコープ
Document Type and Number:
Japanese Patent JP2005530124
Kind Code:
A
Abstract:
A micro-gyroscope ( 10 ) having closed loop output operation by a control voltage (Vty), that is demodulated by a drive axis (x-axis) signal Vthx of the sense electrodes (S 1 , S 2 ), providing Coriolis torque rebalance to prevent displacement of the micro-gyroscope ( 10 ) on the output axis (y-axis) Vthy~0. Closed loop drive axis torque, Vtx maintains a constant drive axis amplitude signal, Vthx. The present invention provides independent alignment and tuning of the micro-gyroscope by using separate electrodes and electrostatic bias voltages to adjust alignment and tuning. A quadrature amplitude signal, or cross-axis transfer function peak amplitude is used to detect misalignment that is corrected to zero by an electrostatic bias voltage adjustment. The cross-axis transfer function is either Vthy/Vty or Vtnx/Vtx. A quadrature signal noise level, or difference in natural frequencies estimated from measurements of the transfer functions is used to detect residual mistuning, that is corrected to zero by a second electrostatic bias voltage adjustment.
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Inventors:
Charloner, A Dorian
Gutierrez, Roman Sea
Tongue, Tony Kay
Gutierrez, Roman Sea
Tongue, Tony Kay
Application Number:
JP2003519353A
Publication Date:
October 06, 2005
Filing Date:
July 19, 2002
Export Citation:
Assignee:
The Boeing Company
International Classes:
G01C19/56; G01C19/5719; G01C25/00; (IPC1-7): G01C19/56; G01P9/04
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto