Methods and systems for vibropendulous error compensation of acceleration sensors
AssigneeHoneywell International Inc.
InventorJohn F. Ackerman
Life of this patent
Estimating the term…
Abstract
A method for reducing effects of vibropendulous errors within a sensor device having three orthogonal sensors is described. The method includes calculating compensation terms for each sensor, the compensation terms associated with an angle between a pendulous axis for the sensor and a cross axis of the sensor, and subtracting the compensation terms for each sensor from data received from that sensor.
Claims18
A method for reducing effects of vibropendulous errors within a sensor device having three orthogonal sensors, said method comprising:
- calculating compensation terms for each sensor, the compensation terms for each sensor associated with data received from each of the three orthogonal sensors, and the respective angles between a pendulous axis for the sensor and a respective input axis of the other two sensors;
- subtracting the compensation terms for each sensor from data received from that sensor, resulting in compensated sensor data;
- and
- utilizing the compensated sensor data within a navigation system.
A navigation system comprising:
- a processor;
- and
- three orthogonally positioned accelerometers each said accelerometer configured to provide acceleration data to said processor, said processor programmed to compensate the acceleration data received from each said accelerometer;
- wherein each compensation is based on data received from the three accelerometers, the respective angles between a pendulous axis for a respective said accelerometer and an input axis of the other accelerometers, and is directed to reducing effects of vibropendulous error.
An inertial measurement unit comprising three orthogonally positioned accelerometers, each said accelerometer configured to provide acceleration data, said inertial measurement unit programmed to compensate the acceleration data received from each said accelerometer to reduce effects of vibropendulous error, wherein said compensation is based on data received from each of said three accelerometers, and the angles between a pendulous axis for a respective said accelerometer and each cross axis of the respective said accelerometer.
Dependencies are inferred from the claim text.