Micro-electro-mechanical device with compensation of errors due to disturbance forces, such as quadrature components
US-2015377624-A1 · Dec 31, 2015 · US
Digital controlled VCO for vibrating structure gyroscope
US10731986B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10731986-B2 |
| Application number | US-201515522402-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2015 |
| Priority date | Oct 27, 2014 |
| Publication date | Aug 4, 2020 |
| Grant date | Aug 4, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A digitally controlled voltage controlled oscillator comprising an Nbit digital to analogue convertor arranged to receive a frequency change demand signal as a digital Nbit word, and having an output provided via an integrator to a voltage controlled oscillator configured to provide a frequency output.
First claim
Opening claim text (preview).
The invention claimed is: 1. A digital ring gyroscope system comprising: a gyroscope resonator that is a mechanical vibratory ring structure; and a digitally controlled voltage controlled oscillator comprising an Nbit digital to analogue convertor arranged to receive a frequency change demand signal as a digital Nbit word that represents a change in a resonant frequency of the gyroscope resonator, and having an output provided via an integrator to a voltage controlled oscillator configured to provide a frequency output. 2. The digital ring gyroscope system as claimed in claim 1 wherein the voltage controlled oscillator is configured to provide an in-phase frequency output and a quadrature phase frequency signal output. 3. The digital ring gyroscope system as claimed in claim 1 wherein the voltage controlled oscillator is configured to generate frequencies which are a multiple of a resonator frequency. 4. The digital ring gyroscope system as claimed in claim 1 , wherein a gain of the integrator and an output range of the voltage controlled oscillator can be selected to independently optimize frequency range and phase adjustment resolution. 5. The digital ring gyroscope system as claimed in claim 1 with a frequency coarse trim to remove process errors and match the frequency to the gyroscope resonator to enhance the start-up timings. 6. The digital ring gyroscope system as claimed in claim 1 where the integrator is pre-set to mid range prior to a start-up sequence to enhance start-up timings.
Assignees
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Classifications
Details of the phase-locked loop · CPC title
- G01C19/5776Primary
Signal processing not specific to any of the devices covered by groups G01C19/5607 - G01C19/5719 · CPC title
the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider (H03L7/0995 takes precedence; fixed oscillators with means for selecting among various phases H03L7/0814) · CPC title
- G01C19/56Primary
Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces · CPC title
Ring laser gyrometers · CPC title
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Frequently asked questions
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- What does patent US10731986B2 cover?
- A digitally controlled voltage controlled oscillator comprising an Nbit digital to analogue convertor arranged to receive a frequency change demand signal as a digital Nbit word, and having an output provided via an integrator to a voltage controlled oscillator configured to provide a frequency output.
- Who is the assignee on this patent?
- Atlantic Inertial Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01C19/5776. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 04 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).