INPUT SYSTEM BASED ON THREE-DIMENSIONAL INERTIAL NAVIGATION SYSTEM, AND ITS METHOD FOR ESTIMATING TRAJECTORY

摘要

PROBLEM TO BE SOLVED: To provide an input system based on a three-dimensional inertial navigation system capable of restoring three-dimensional movements while simply using three acceleration sensors without using both three acceleration sensors and three angular velocity sensors; and its method for estimating trajectories.

SOLUTION: The input system based on the three-dimensional inertial navigation system includes acceleration sensors which output information on acceleration immediately before movement, information on the acceleration of the movement, and information on acceleration immediately after the movement; an estimating computing part for rotary angle information which estimates information on the rotary angle of the movement through a predetermined computing process based on the output information on the acceleration immediately before the movement and the information on the acceleration immediately after the movement; a conversion computing part which calculates information on the position of the movement based on the estimated information on the rotary angle of the movement and the output information on the acceleration of the movement; and an optimum plane computing part which projects the information on the position of the movement onto an optimum plane.

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