Patent ID: 6941810
Filing Date: 2005-09-13
Classification: G01C,G01P

Abstract:
1. An angular velocity sensor for detecting an angular velocity component comprising: an oscillator made of a substrate with thickness enough to obtain a mass sufficient to provide the sensor with a required sensitivity; a sensor casing for accommodating the oscillator therewithin; a flexible member for connecting the oscillator to the sensor casing so that the oscillator can be moved with respect to the sensor casing; an electrical driving device for oscillating the oscillator using electrical energy, the electrical driving device including a first electrode provided on a surface of the oscillator, a second electrode provided on a surface of a fixed member fixed to the sensor casing and an excitation element applying a voltage between the first electrode and the second electrode; and a capacitance element including a pair of electrodes, a distance between the pair of electrodes being changed based on a deviation of the oscillator caused by Coriolis force.