Analyzing and Control of Drive Mode in a Vibratory Ring Gyroscope

Abstract:

One of the challenges in MEMS era is dynamical modeling and control. This paper presents the analysis and control of drive mode of an 80 mm-thick, 1.1 mm in diameter high aspect-ratio (20:1) ring vibratory MEMS gyro. At first dynamic model of MEMS is derived through energy and Lagrange equations. Then state space equation is derived. Natural frequencies were derived by ABAQUS software and through equations. Frequency analysis was applied to analyze system and making comparison between two applied approaches in deriving frequencies. At last modified PID control was designed based on previous section results. We extracted results in presence of white noise to examine stability of the proposed controller. Consequently drive mode shows acceptable behavior through the applied PID controller. The aim is accomplished, though more advanced control can be applied to reduce uncertainty and compensate the noise in feedback to around zero.

• Periodical: Applied Mechanics and Materials (Volume 390)
• Pages: 414-418
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.390.414
• Online since: August 2013
• Authors: Reza Esbati Lavasani, Amirali Nikkhah
• Keywords: ABAQUS, Drive Mode, MATLAB, MEMS Gyroscopes, Natural Frequency, PID Control, White Noise

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