Inertial sensor arrangement

US4823626A · kind A · utility

Assignee

• Bodenseewerk Gerätetechnik GmbH · DE

Inventors

• Ulrich Hartmann · Überlingen, DE
• Reinhard Fessel · Gaienhofen, DE
• Dirk Jansen · Überlingen, DE

Key dates

• Filing date: Jun 26, 1987
• Grant date: Apr 25, 1989
• Expiry date: Jun 26, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/1279
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An inertial sensor arrangement comprises two electrically restrained gyros with three mutually orthogonal input axes. After A/D-conversion pick-off signals are supplied to a digital computer which forms part of the restraining loop of the gyros and provides digital output signals. The output signals are applied to a D/A-converter which supplies corresponding currents to the torquer of the gyros. Thereby integrating quantization errors are avoided. The cross-coupling behavior and gyro errors can be compensated in the computer. The inertial sensor arrangement can be measured as an entirety. The gyro parameters measured thereby are memorized in an EEPROM and are taken into account in the computer.