Robust Optimization of a MEMS Accelerometer Considering Temperature Variations

Sensors

Guangjun Liu²  Feng Yang²  Xiaofan Bao²  Tao Jiang¹ 

[1] School of Mechanical Engineering, TongjiUniversity, Shanghai 200092, China;

关键词: MEMS;    accelerometer;    robust optimization;    temperature variations;    sensitivity analysis;   

DOI  :  10.3390/s150306342

来源: mdpi

【 摘 要 】

A robust optimization approach for a MEMS accelerometer to minimize the effects of temperature variations is presented. The mathematical model of the accelerometer is built. The effects of temperature variations on the output performance of the accelerometer are determined, and thermal deformation of the accelerometer is analyzed. The deviations of the output capacitance and resonance frequency due to temperature fluctuations are calculated and discussed. The sensitivity analysis method is employed to determine the design variables for robust optimization and find out the key structural parameters that have most significant influence on the output capacitance and resonance frequency of the accelerometer. The mathematical model and procedure for the robust optimization of the accelerometer are proposed. The robust optimization problem is solved and discussed. The robust optimization results show that an optimized accelerometer with high sensitivity, high temperature robustness and decoupling structure is finally obtained.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.