H-Infinity Control of MEMS Gyroscope Using T-S Fuzzy Model

A multi-input multi-output (MIMO) Takagi-Sugeno (T-S) fuzzy model is proposed to represent the nonlinear model of micro-electro mechanical systems (MEMS) gyroscope. A Lyapunovbased H- infinity control strategy is derived to attenuate the influence of the various external disturbances within the desired region. The H-infinity control technique has been combined with an adaptive control method to achieve the desired attenuation of disturbance due to the parameter uncertainties and external disturbances in the MEMS gyroscopes. For the purpose of comparison, the designed controller is also implemented on the nonlinear model of the MEMS gyroscope. Numerical simulations are investigated to verify the effectiveness of the proposed control scheme on the T-S model and the nonlinear model.