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Active Disturbance Rejection Control For Mems Gyroscopes, Qing Zheng, Lili Dong, Dae Hui Lee, Zhiqiang Gao
Active Disturbance Rejection Control For Mems Gyroscopes, Qing Zheng, Lili Dong, Dae Hui Lee, Zhiqiang Gao
Electrical and Computer Engineering Faculty Publications
A new control method is presented to drive the drive axis of a Micro-Electro-Mechanical Systems (MEMS) gyroscope to resonance and to regulate the output amplitude of the axis to a fixed level. It is based on a unique active disturbance rejection control (ADRC) strategy, which actively estimates and compensates for internal dynamic changes of the drive axis and external disturbances in real time. The stability analysis shows that both the estimation error and the tracking error of the drive axis output are bounded and that the upper bounds of the errors monotonously decrease with the increase of the controller bandwidth. …