Patent ID: 8185308
Filing Date: 2012-05-22
Classification: G01C

Abstract:
1. An angular velocity correcting method for correcting sensitivity of an angular velocity detecting sensor that is mounted in a vehicle and detects angular velocity of the vehicle, and for correcting angular velocity output from the angular velocity detecting sensor using the corrected sensitivity, the angular velocity correcting method comprising the steps of: enabling a first sensor sensitivity correcting method and a second sensor sensitivity correcting method, the first sensor sensitivity correcting method for considering variation of sensor sensitivity due to an oblique angle of the angular velocity detecting sensor with respect to a horizontal plane and a sensitivity error of the angular velocity detecting sensor and correcting the sensor sensitivity, and the second sensor sensitivity correcting method for considering the variation of the sensor sensitivity due to the oblique angle of the angular velocity detecting sensor with respect to the horizontal plane without considering the sensitivity error of the angular velocity detecting sensor and correcting the sensor sensitivity; calculating the sensitivity error of the angular velocity detecting sensor on the basis of a ratio of the sensor sensitivity obtained by the first sensor sensitivity correcting method to the sensor sensitivity obtained by the second sensor sensitivity correcting method; and correcting the angular velocity output from the angular velocity detecting sensor using the sensitivity error.