| 摘要 |
Vibration induced errors in sensors are predicted based on a measurement of vibration power spectra. Accelerometer samples are used to estimate vibration power spectral densities. A calibration procedure using suitable vibration stimulus provides the ability to estimate sensitivity coefficients to be used to compensate for the vibration induced error. High rate vibration measurement samples are provided as input to a power spectral density estimator. The vibration power spectrum estimates are then combined with previously obtained calibration coefficients to generate real time bias correction. Vibration bias sensitivity coefficients are estimated in a controlled environment to ensure their accuracy to compensate the sensor in real-time applications using acceleration measurement devices such as accelerometers mounted to a rigid sensor assembly shared with the sensor to be compensated. Vibration bias estimates are then combined with outputs from both a gyro and accelerometer, which combined from an inertial sensor.
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