Low q body dithered laser gyro assembly

Details Low q body dithered laser gyro assembly Low q body dithered laser gyro assembly

G - Physics

01

C

345/10

G01C 19/64 (2006.01) G01C 19/70 (2006.01)

Patent

CA 1251547

Abstract A low Q ring laser gyro-dither motor assembly which is responsive to a wide range of frequency com- ponents of a drive signal having a randomly varying frequency such that the dither imparted to the gyro is frequency modulated by the drive. The frequency mod- ulated dither varies the lock-in rate of the gyro as a function of the random drive signal to eliminate errors in the gyro output due to lock-in. The drive signal may be random in frequency only or random in both frequency and amplitude to provide the frequency modulation. Fixed frequency modulation may also be employed. The low Q assembly need not be driven at the natural frequency thereof so that a common drive circuit may be employed for a plurality of low Q gyro-dither motor assemblies forming an instrument cluster.

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