Patent ID: 7513155
Filing Date: 2009-04-07
Classification: G01C

Abstract:
1. An inertial sensor comprising: a basement layer including a first principal plane and a second principal plane that are positioned on sides opposite to each other in a thickness direction; and a sensor unit located in the first principal plane of said basement layer, said sensor unit comprising: a drive frame disposed apart from said basement layer on the first principal plane of said basement layer; a driving means for causing said drive frame to vibrate in a driving direction; a Coriolis frame that is connected to said drive frame in the state of being disposed apart from said basement layer on said first principal plane of said basement layer, and that is vibrated in the driving direction with the same amplitude and in the same phase as those of the vibration of said drive frame, as well as vibrated by Coriolis force in a detection direction intersecting with said driving direction; a detection frame that is connected to said Coriolis frame in the state of being disposed apart from said basement layer on said first principal plane of said basement layer, and is vibrated in the detection direction with the same amplitude and in the same phase of those of the vibration in the detection direction of said Coriolis frame; a beam that is disposed apart form said basement layer on said first principal plane of said basement layer, and that fixes said detection frame to said basement layer so as not to be affected by the vibration in the driving direction of said Coriolis frame, and so as to follow the vibration in the detection direction of said Coriolis frame; and a detection means for detecting the vibration in a detection direction of said detection frame as an applied angular rate;