Patent · US Expired

Device for calibrating ultra-sensitive accelerometers

US4869092A · kind A · utility

12Cited by

2References

15Claims

0Family size

Assignee

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES · FR

Inventors

Alain Bernard · Gardanne, FR
Pierre Touboul · Guyancourt, FR

Key dates

Filing date	Dec 18, 1987
Grant date	Sep 26, 1989
Priority date	—
Expiry date	Dec 18, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG01P21/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Measuring instruments, such as ultra-sensitive accelerometers, are attached to a support inlcuding three pairs of electrodynamic or piezoelectric actuators. Each actuator pair is associated with one respective common axis of a reference trirectangular system. An electronic speed and phase slaver chains the actuators to induce translational and rotational accelerations in the support. Electrical signals delivered from the instruments to be calibrated are analyzed by synchronous demodulations and processed to determine sensitivity, orientation and position of the instruments in relation to the reference axes. The instrument support can be carried on-board a satellite.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.