| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that when an attitude is detected by using only a vibration-type gyro, a three-dimensional attitude is not detected as long as an absolute three-dimensional attitude is unknown, and that the attitude cannot be detected continuously for many hours due to a noise generated by the gyro and due to an accumulation of errors generated in a digital signal processing operation. SOLUTION: In an attitude sensor unit, an output signal of the vibration-type gyro is combined with an output signal of an attitude sensor used to detect the absolute three-dimensional attitude, the absolute three-dimensional attitude in a detection start of the absolute three-dimensional attitude is detected, and the attitude is detected continuously for many hours. COPYRIGHT: (C)2004,JPO
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