Method for calibrating a vibrating inertial sensor
US12196576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Dec 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/574
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating an inertial angular sensor includes: for at least two electrical angles of the vibration wave, applying, via each of the three trim controls, a sinusoidal stiffness disturbance having a disturbance frequency, and for each applied disturbance, determining and storing an estimated excitation force to be applied to the resonator in the presence of the stiffness disturbance, on the basis of excitation controls determined by the servo controls; determining, on the basis of the three estimated excitation forces, three 2×2 matrices, being representative of the response of the gyrometer to the stiffness disturbance; determining and storing an estimated inverse excitation matrix and an estimated inverse detection matrix on the basis of the three matrices, an excitation matrix and a detection matrix being respectively representative of effects of the excitation chain and of effect of the detection chain of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.