WebJun 11, 2024 · DRLG is mainly composed of the ring resonator and the dither mechanism [15,16], as shown in Fig. 3. The ring resonator is made of glass ceramics with a low expansion coefficient, and the dither ... WebDithering mechanism and method for eliminating the effects of zero-rate bias in a rate sensor or gyroscope. Both continuously moving and indexing embodiments are disclosed. The mechanism includes a first part mounted in a fixed position centered about a dither axis perpendicular to the input axis of the gyroscope, a second part disposed coaxially of …
US4987334A - Piezoelectric dither motor - Google Patents
WebSep 23, 1991 · The tuner for ring laser gyro dither mechanism shown herein is a disk 32 which is bolted to the top end 48 of a base mounted vane 24 of the gyro. All such base mounted vane top ends 48 are thus bolted together, thereby stiffening the spring constant of the azimuthal vibration 52 of the top ends 48, thus increasing the frequency of the dither … WebThe ring laser gyro suffers a loss of output at low input rates, known as the 'lock-in' effect, due to the cavity frequencies coupling together. This is overcome by applying alternately positive and negative bias using a dither mechanism to oscillate the laser block about the input axis. This paper examines the design of the dither to achieve a particular … romy arends
Dithering mechanism for eliminating zero-rate bias in a …
WebApr 13, 2007 · Abstract: Dithering mechanism and method for eliminating the effects of zero-rate bias in a rate sensor or gyroscope. Both continuously moving and indexing embodiments are disclosed. The mechanism includes a first part mounted in a fixed position centered about a dither axis perpendicular to the input axis of the gyroscope, a … WebA means for stressing the hub of a laser gyro dither mechanism is provided including a compression bolt passing through an aperture in the hub and having a nut threaded thereon for tightening against the hub until a desired dither frequency is achieved. In an alternative embodiment, the hub is stressed by placing it in tension using a rod within an aperture … WebThe Dither mechanism is very compact and provides continuous small rotation rate. The dither rotation rate can be varied by varying the voltage applied on the piezo plates. FEA can be used for designing a complicated torsion bar of nonuni f orm cr ss s ec tion or di nt appl ca ns. Scope of Future Work: romy aranguiz