The HRG makes use of a small thin solid-state hemispherical shell, anchored by a thick stem. This shell is driven to a flexural resonance by dedicated electrostatic forces generated by electrodes which are deposited directly onto separate …

The HRG’s structure features a hemispherical shell to maximize the efficient utilization of each gram of resonator material for flexural energy storage. A stem, secured at the top of the hemisphere, supports and holds this shell in place.

2023年7月5日 · The hemispherical resonator gyro operates on the inertia effect of elastic wave oscillations of an axysimmetric resonator shaped as a hemisphere, elastic ring or axisymmetric elastic shell. Gyros of this type usually have thin-wall …

2018年10月23日 · What makes HRG Crystal™ a unique gyroscope is that it addresses standard to very high performances keeping the exact same size. Safran has also developed an innovative inertial navigation module, the Onyx™, based on the HRG Crystal™ gyro.

2024年3月7日 · Hemispherical resonator gyroscopes (HRGs) are among the most promising designs for inertial navigation-grade gyroscopes, offering many advantages, such as high...

Abstract— This paper introduces a fabrication technique that uses planar MEMS micromachining processes to produce hemispherical resonating shells for gyroscopes. The hemispheres exhibit a quality factor in excess of 20,000 with resonant frequencies in the range of 20 kHz for the 4-node wineglass mode.

Abstract: The Hemispherical Resonator Gyro (HRG) is a solid-state and widely used vibrating gyroscope, especially in the field of deep space exploration. The flat-electrode HRG is a new promising

2023年7月5日 · The HRG operation is based on the effect of inertia and precession of the wave pattern of a vibrating shell mounted on a rotating base.

The HRG resonator is optimized for performances: • Its topology is a hemispherical shell for optimal contribution of each gram of resonator material to the flexural energy storage.

To eliminate metallization and preserve the high Q-factor for FS hemispherical resonator dual-shell gyroscopes (DSGs), an indirect excitation method is explored in this project. The DSG contains a central stem, an inner device shell as the sensing element, and …