| 摘要 |
PURPOSE:To heighten accuracy for detecting the travel-azimuth of a vehicle even when detection result outputs obtained from an oscillating gyro when the vehicle is turned in its right-and-left directions respectively at the same angle differ in level from each other. CONSTITUTION:A conversion-constant changing means 6a is provided to an arithmetic unit 6 which integrates angular-velocity outputs from an oscillating gyro 2 detecting the angular velocity of a vehicle and then converts the integration result data into the travel-azimuth of this vehicle according to a conversion constant. When detection result outputs obtained from the oscillating gyro 2 when the vehicle is turned in its right-and-left directions respectively at the same angle differ in level from each other, the conversion-constant changing means 6a can set the arithmetic unit 6 for either a left turning conversion conversion-constant or a right turning conversion-constant according to the turning direction of the vehicle. |
