Title:
フォースリバランス型加速度計におけるバイアス低減
Document Type and Number:
Japanese Patent JP5705954
Kind Code:
B2
Abstract:
A system is provided for the continuous reduction, in real time, of bias in a force rebalanced accelerometers having a proofmass coupled to an accelerometer housing by a flexure suspension. The system comprises a closed loop, force rebalance servo that provides control voltage to the proofmass to null an electrical pickoff signal that indicates the motion of the proofmass with respect to the accelerometer housing, wherein a time varying disturbance signal is injected into the force rebalance servo that results in the generation of a time varying voltage in the output of the force rebalance servo that corresponds to a magnitude of the net positive spring of the combined flexure suspension and electrostatic springs acting on the proofmass. The system also comprises a negative electrostatic spring servo that applies a negative electrostatic spring DC voltage to each of a pair of negative electrostatic forcer electrodes.
More Like This:
Inventors:
Robert E. Stewart
Application Number:
JP2013261202A
Publication Date:
April 22, 2015
Filing Date:
December 18, 2013
Export Citation:
Assignee:
Northrop Grumman Guidance and Electronics Company, Inc.
International Classes:
G01P15/13; G01P15/125
Domestic Patent References:
| JP2851673B2 | ||||
| JP5237363B2 | ||||
| JP5624073B2 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto