Patent ID: 8037758

Claim:
An angular velocity detection apparatus, comprising: a sensor unit having first and second detection axes serving as angular velocity detection axes, the first and second detection axes intersecting each other; a sensor output correction circuit for making at least one of an offset adjustment and a sensitivity adjustment to a detection output of an angular velocity around the first detection axis and a detection output of an angular velocity around the second detection axis; a sign determination circuit for obtaining a sign of a rotational direction of an angular velocity on any one of the first and second detection axes; an amplitude calculation circuit for multiplying a square sum average of detection outputs of angular velocities around the first and second detection axes outputted by the sensor output correction circuit and a sign outputted by the sign determination circuit; and a control circuit coupled to a back of the amplitude calculation circuit, wherein the control circuit receives and compares a multiplication result from the amplitude calculation circuit and output results from a plurality of physical quantity sensors other than the sensor unit, and if the multiplication result and the output results are not matched, the control circuit outputs an offset adjustment factor or a sensitivity adjustment factor for matching the multiplication result and the output results to the sensor output correction circuit.