Patent ID: 8473244
Filing Date: 2013-06-25
Classification: G01C,G01P

Abstract:
1. An angular velocity correction device comprising: a horizontal angular velocity detection unit to detect horizontal axis angular velocity, that is mounted on a main unit attached to a moving object that moves along a predetermined movement surface, and that is made up of angular velocity around the horizontal axis which is orthogonal to the advancing direction of said moving object, occurring according to the inclination angle of said movement surface, the horizontal axis angular velocity being subjected to a high-pass filter processing, the horizontal axis angular velocity subjected to the high-pass filter processing being subjected to a low-pass filter processing; a correction value generating unit to generate a correction value for correcting said horizontal axis angular velocity, based on said horizontal axis angular velocity that satisfies predetermined horizontal determining conditions of said horizontal axis angular velocity in the past; and a correction unit to correct said horizontal axis angular velocity using said correction value, wherein a velocity of the moving object is calculated by dividing an acceleration of the moving object by the horizontal axis angular velocity that is subjected to the high-pass filter processing and the low-pass filter processing.