Angular velocity sensor
US6240780A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5719
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An angular velocity sensor includes a board, a first vibrator, a second vibrator, a vibration generator, a displacement detector and a frequency adjuster. The first vibrator is supported on the board through first supporting beams and arranged so as to be vibrated in the direction of a first axis. The second vibrator is supported on the first vibrator through second supporting beams and arranged so as to be vibrated in the direction of the first axis and in the direction of a second axis at a right angle to the direction of the first axis. The vibration generator cause the first vibrator to vibrate in the direction of the first axis. The displacement detector detects a displacement of the second vibrator in the direction to the second axis when an angular velocity has been applied around a third axis at right angles with the first and second axes. The frequency adjuster adjusts a vibrating side resonance frequency at the time when the first vibrator is vibrated in the direction of the first axis and adjusts a detecting side resonance frequency at the time when the second vibrator is vibrated in the direction of the second axis by an angular velocity applied around the third axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.