ANGULAR VELOCITY SENSOR UNIT AND ANGULAR VELOCITY SENSOR DIAGNOSING DEVICE

摘要

An angular velocity sensor unit capable of judgment of failure in both of two angular velocity sensors. It has a first angular velocity sensor (12) and a second angular velocity sensor (13), each including a vibrator having a shaft section and a vibrating section. The angular velocity sensors (12, 13) are each disposed so that its shaft section does not become parallel with an XY-plane defined by the X-axis and Y-axis of three orthogonal axes. The second angular velocity sensor has its failure decided according to whether or not its detection value of angular velocity around the Z-axis is outside the tolerance range of the detection value of angular velocity around the Z-axis on the part of the other angular velocity sensor. The first angular velocity sensor has its failure decided by comparison with a pseudo-calculated angular velocity.