Patent ID: 9164124
Filing Date: 2015-10-20
Classification: G01C,G01P

Abstract:
1. An automatic gain control apparatus of an inertial sensor, comprising: an inertial sensor that detects accelerations and angular velocities of the corresponding axes based on vibrations of driving masses and Coriolis forces for each axis; a driving unit that vibrates the driving mass in a direction of the corresponding axis by applied driving voltage; a detection unit that detects a driving displacement of the driving mass vibrated by the driving unit; a state determination unit that compares the detected driving displacement with a preset target value to determine a state of the driving mass and generates an AGC control signal according to the state of the driving mass; and a control unit that includes an AGC controlling to compensate for the driving displacement of the driving mass when the state of the driving mass is abnormal and performs a control to wake-up the AGC or convert the AGC into a sleep mode according to the AGC control signal input from the state determination unit to operate the AGC at the corresponding driving rate.