Robust Design of a Decoupled Vibratory Microgyroscope Considering Over-Etching as a Fabrication Tolerance Factor
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概要
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A robust optimal design of a bulk-micromachined, decoupled vibratory microgyroscope was carried out to determine geometric dimensions such that the gyroscopic performance is least affected by a fabrication tolerance. Electro-mechanical vibration analysis considering the sensing electrodes and the electronic signal processing were performed to obtain the frequency responses that influence the gyroscopic performance. A statistically distributed lateral over-etching (LOE) developed in the fabrication process was selected as a fabrication tolerance factor. The dimensions of the driving and sensing spring are selected as design variables which are the sum of deterministic mask dimensions and the LOE. To minimize the in fluence of LOE on the decoupled vibratory microgyroscope performance, the multi-objective function was formulated so as to minimize the sensitivities of the frequency difference with respect to the LOE. As a result, the standard deviation of the frequency difference and the driving natural frequency are reduced to 78% and 8%, respectively, through the Monte Carlos Simulation (MCS).
- 一般社団法人日本機械学会の論文
- 2006-04-15
著者
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HA Sung
Department of Therapeutic Radiology, Seoul National University College of Medicine
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Ha Sung
Department Of Mechanical Engineering Hanyang University
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JEONG Hee-Moon
MEMS Lab., Samsung Advanced Institute of Technology
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KIM JunO
MEMS Lab., Samsung Advanced Institute of Technology
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Kim Juno
Mems Lab. Samsung Advanced Institute Of Technology
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Jeong Hee-moon
Mems Lab. Samsung Advanced Institute Of Technology
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