SINGLE CORIOLIS INERTIAL RATE AND ACCELERATION SENSOR

Rand H. Hulsing II

Peer Reviewed

Abstract: The Single Coriolis Inertial Rate and Acceleration Sensor (SCIRAS’“)* measures both angular rotation and linear acceleration. By detecting Coriolis acceleration of a dithered accelerometer, it is possible to measure a direct rotation rate. Patented processing techniques have been developed which can separate Coriolis components of these signals from components due to linear acceleration with sufficient precision to achieve a few nmi/h sensor package. The sensor assembly (without electronics) weighs under 0.5 lb and fits within an 8 in3 package. The system costs substantially less than comparable RLG systems and uses about half as much power. There is no wear-out since this is an all-flexure device. The sensor is substantially rugged, being able to survive 1000 g shocks and 30 g vibration. Wide temperature applications are possible and shelf life is indefinite, since there are no exotic fluids or gases required for operation. This represents a marked reduction in life-cycle costs. This paper describes the evolution of the design from theory of operation through three generations of hardware. Laboratory test data show this to be a practical, working sensor.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 35, Number 3
Pages: 347 - 360
Cite this article: Hulsing, Rand H., II, "SINGLE CORIOLIS INERTIAL RATE AND ACCELERATION SENSOR", NAVIGATION, Journal of The Institute of Navigation, Vol. 35, No. 3, Fall 1988, pp. 347-360.
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