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RESEARCH PAPERS

The Stabilization of a North-Seeking Platform Using a Dynamically Tuned Hooke’s Joint Gyroscope

[+] Author and Article Information
J. S. Burdess, C. H. J. Fox

Department of Mechanical Engineering, Newcastle University, Newcastle Upon Tyne, England NE1 7RU

J. Appl. Mech 47(1), 167-171 (Mar 01, 1980) (5 pages) doi:10.1115/1.3153597 History: Received April 01, 1979; Revised September 01, 1979; Online July 21, 2009

Abstract

The paper shows that the ideally tuned Hooke’s joint gyroscope is capable of operating as a gyrocompass. The dynamic response of the compass is examined in detail and its accuracy as a north-seeking device is assessed. It it shown that small amounts of mistuning will result in gross errors. The need for precision tuning is eliminated by supporting the gyroscope on a single-degree-of-freedom platform. It is shown that if the platform is driven via feedback of the gyrorotor displacement in azimuth then the response of the combined system is essentially that of the ideal gyroscope. The overall system is insensitive to misturning errors and will automatically align the gyrospin axis with true north irrespective of any initial offset. The effects of damping, mass unbalance, and platform misalignment are assessed.

Copyright © 1980 by ASME
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