Patent ID: 8371165
Filing Date: 2013-02-12
Classification: G01C

Abstract:
1. An MEMS gyroscope, associated with a DUT, comprising: a gyroscope module, having a plurality of system parameters; a sensing module, coupled with the gyroscope module for sensing a system dynamic of the gyroscope module; and a control module, coupled with the gyroscope module and the sensing module for receiving the system dynamic sensed by the sensing module, applying a gyroscope control method to control the gyroscope module, and calculating a rotating angle of the DUT which the MEMS gyroscope being attached thereto; wherein the gyroscope control method comprises the steps of outputting a preliminary control signal including a first extra frequency signal and a second extra frequency signal to the gyroscope module, for driving the gyroscope module; estimating a first estimated value of the plurality of system parameters based on the received system dynamic, then calculating a first compensation signal based on the estimated value of the plurality of system parameters, wherein the first compensation signal includes the first extra frequency signal and the second extra frequency signal; outputting the first compensation signal to the gyroscope module; estimating a second estimated value of the plurality of system parameters based on another received system dynamic, then calculating a second compensation signal based on the second estimated value of the plurality of system parameters, wherein the second compensation signal includes the first extra frequency signal and the second extra frequency signal; and comparing the second estimated value of the plurality of system parameters with the first estimated value of the plurality of system parameters, and when the second estimated value of the plurality of system parameters are the same with the first estimated value of the plurality of system parameters, applying a filter unit and an angle calculating unit to calculate the rotating angle of the DUT based on the system dynamic at the time.