Accession Number : ADA112129

Title :   Wheel-Speed Induced Errors in the Use of Dry-Tuned Gyros.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL AL GUIDANCE AND CONTROL DIRECTORATE

Personal Author(s) : Hung, J C ; White, H V

PDF Url : ADA112129

Report Date : Aug 1981

Pagination or Media Count : 17

Abstract : It is known that for a gimbaled inertial measurement unit employing two dry-tuned gyros, a dual gyro wheel supply gives better performance than a single gyro wheel supply. The effectiveness of the dual gyro wheel supply is explained in this paper by demonstrating the efforts of certain vibrations on gyros. It will be shown that a dry-tuned gyro is susceptible to vibrations at frequencies which are either equal to or twice that of the gyro spin frequencies. By using two power supplies of slightly different frequencies, external vibrations at these frequencies are avoided. It is recommended that gyro sensitivities with respect to external vibrations at these special frequencies be included in the performance specification of a dry-tuned gyro. (Author)

Descriptors :   *GYROSCOPES, *GYRO STABILIZERS, *ERRORS, *POWER SUPPLIES, *WHEELS, *INERTIAL MEASUREMENT UNITS, PERFORMANCE TESTS, VIBRATION, DRIFT, CONFIGURATIONS, MEASURING INSTRUMENTS, SPINNING(MOTION), TRANSLATIONS, GIMBALS

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE