Device for calibrating ultra-sensitive accelerometers

Details Device for calibrating ultra-sensitive accelerometers Device for calibrating ultra-sensitive accelerometers

1987-12-18

1989-09-26

Noland, Tom

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 1R, G01P 2100

Patent

active

048690929

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.

REFERENCES:
patent: 3344673 (1967-10-01), Laming
patent: 4393710 (1983-07-01), Bernard
Delattre, Michel et al, "Le Essais en Orbite de l'Accelerometre Cactus", Office National d'Etudes et de Recherches Aerospace, Publication No. 1976-5, 1977, pp. 1-9.
Advisory Group for Aerospace Research and Development, "Advances in Inertial Navigation Systems and Components", AGARDograph No. 254, Apr. 1981, pp. 5-1 to 5-10; Alain Bernard et al (The Cactus Accelerometer).

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