Method and device for tuning a first oscillator with a second oscillator and rotation rate sensor

US6654424B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Thomae · Kirchentellinsfurt, DE
• Johannes Artzner · Eningen unter Achalm, DE
• Reinhard Neul · Stuttgart, DE
• Georg Bischopink · Neckartenzlingen, DE
• Karsten Funk · Stuttgart, DE
• Markus Lutz · Palo Alto, US

Key dates

• Filing date: Mar 7, 2000
• Grant date: Nov 25, 2003
• Expiry date: Mar 7, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01C19/56
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In the method and device for tuning a first oscillator with a second oscillator respective response signals of the first oscillator are produced from corresponding frequency-shifted and/or phase-shifted signals of the second oscillator. The first oscillator is tuned to the second oscillator according to the difference of the respective response signals. For amplitude correction a quotient is formed by dividing an output signal by the sum of the response signals. The method and device according to the invention are especially useful in a rotation rate sensor. The invention also includes a rotation rate sensor, which includes a device for determining rotation rate from the oscillations of a first and second oscillator and the device for tuning the first oscillator with the second oscillator.