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Multi-DOF rotor attitude angle measuring method and apparatus of the ultrasonic motor
Multi-DOF rotor attitude angle measuring method and apparatus of the ultrasonic motor
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机译：超声电机的多自由度转子姿态角测量方法及装置
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摘要
PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring the rotor attitude angle of a multiple-degree-of-freedom ultrasonic motor which can accurately perform a required rotary angle measurement for a long time.;SOLUTION: A characteristic constitution means includes a displacement geometry plane surface assembly 4 constituted expressibly for the attitude angle of the rotor 3 by first finite planar coordinates on first planar member 41 perpendicularly crossing with the axis of rotating center of a rotor 3 including the central point of rotation of the rotor 3 in a stator coordinate system with the central axis of installing a stator 2 as a reference and second finite planar coordinates on second planar member 42 including the axis of the rotating center in the plane, first and second laser type range finding sensors 5 and 6 for optically measuring distances between two intersections crossing with the first finite plane on the first planar member 41 in the displacement geometry plane surface assembly 4 and one intersection crossing with the second finite plane on the second plane member 42 of straight lines generated from three measuring reference points, and a third laser type range finding sensor 7. The characteristic constitution means is adopted.;COPYRIGHT: (C)2005,JPO&NCIPI
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