In order to avoid micro-electro-mechanical system（ MEMS） gyro interfered by external interference in high-precision attitude control

which results in random errors and improve the robustness and measurement precision of MEMS gyro

an adaptive PI fractional integration sliding mode control strategy is proposed. The principle of MEMS gyro system is analyzed and the dynamic model is established. On the basis of fast fractional integral sliding mode function

fast adaptive sliding mode control（ FAPISMC） model is constructed

which including adaptive proportional integral（ PI） control and approach control. The convergence and stability of the FAPISMC strategy are verified by Lyapunov function. The FAPISMC follower system is analyzed with SIMULINK.The simulation results show that

while FAPISMC control MEMS gyro

the response is fast

the starting effect is good

chattering phenomenon is not found. FAPISMC achieves the goal of fast and stable tracking input signals

and the robustness of MEMS gyro is improved.