BIAS ESTIMATING METHOD, POSTURE ESTIMATING METHOD, BIAS ESTIMATING DEVICE, AND POSTURE ESTIMATING DEVICE
First Claim
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1. A bias estimating method comprising:
- calculating a virtual posture angle which is a posture angle with a bias which is assumed to be zero through the use of detection values of a plurality of axes in a calibration posture where one axis of a multi-axis acceleration sensor is parallel to the vertical direction; and
estimating a bias value contained in the detection value of the axis using the detection value of the axis and the virtual posture angle.
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Abstract
A bias estimating method includes: calculating a virtual posture angle which is a posture angle with a bias which is assumed to be zero by the use of detection values of a plurality of axes in a calibration posture where one axis of a multi-axis acceleration sensor is parallel to the vertical direction; and estimating a bias value contained in the detection value of the axis using the detection value of the axis and the virtual posture angle.
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Citations
8 Claims
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1. A bias estimating method comprising:
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calculating a virtual posture angle which is a posture angle with a bias which is assumed to be zero through the use of detection values of a plurality of axes in a calibration posture where one axis of a multi-axis acceleration sensor is parallel to the vertical direction; and estimating a bias value contained in the detection value of the axis using the detection value of the axis and the virtual posture angle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A bias estimating device comprising:
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a virtual posture angle calculating unit that calculates a virtual posture angle which is a posture angle with a bias which is assumed to be zero by the use of detection values of a plurality of axes in a calibration posture where one axis of a multi-axis acceleration sensor is parallel to the vertical direction; and a bias estimating unit that estimates a bias value contained in the detection value of the axis using the detection value of the axis and the virtual posture angle. - View Dependent Claims (8)
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Specification