Integrated rate isolation sensor

US8290744B2 · kind B2 · utility

Assignees

• The Charles Stark Draper Laboratory, Inc. · US
• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Tye Michael Brady · Southborough, US
• Timothy Henderson · Ashland, US
• Richard W. Phillips · Eagan, US
• Doug Zimpfer · Houston, US
• Tim Crain · Seattle, US

Key dates

• Filing date: Jan 14, 2010
• Grant date: Oct 16, 2012
• Expiry date: Dec 19, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01C25/005
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In one embodiment, a system for providing fault-tolerant inertial measurement data includes a sensor for measuring an inertial parameter and a processor. The sensor has less accuracy than a typical inertial measurement unit (IMU). The processor detects whether a difference exists between a first data stream received from a first inertial measurement unit and a second data stream received from a second inertial measurement unit. Upon detecting a difference, the processor determines whether at least one of the first or second inertial measurement units has failed by comparing each of the first and second data streams to the inertial parameter.