{"title":"A combined comb / bulk mode gyroscope structure for enhanced sensitivity","authors":"M. Elsayed, F. Nabki, M. El-Gamal","doi":"10.1109/MEMSYS.2013.6474325","DOIUrl":null,"url":null,"abstract":"This work introduces a novel dodecagon bulk mode gyroscope structure with parallel plate comb drives. A major contribution, compared to prior art, is that adding combs connected to the central disk structure, at the points of maximum vibration amplitudes, increases the drive strength and results in significant improvement in sensitivity. This can enable the fabrication of high performance bulk-mode gyroscopes in standard commercial MEMS technologies. Prototypes were measured to operate at frequencies of ~1.5 MHz, with quality factors of ~33,000, at a 10 mTorr vacuum level. Preliminary measurements using discrete electronics show a rate sensitivity of 0.31 μV/°/sec, corresponding to a capacitance sensitivity of 0.43 aF/°/sec/electrode.","PeriodicalId":92162,"journal":{"name":"2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS 2013) : Taipei, Taiwan, 20-24 January 2013. IEEE International Conference on Micro Electro Mechanical Systems (26th : 2013 : Taipei, Taiwan)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2013-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS 2013) : Taipei, Taiwan, 20-24 January 2013. IEEE International Conference on Micro Electro Mechanical Systems (26th : 2013 : Taipei, Taiwan)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MEMSYS.2013.6474325","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
This work introduces a novel dodecagon bulk mode gyroscope structure with parallel plate comb drives. A major contribution, compared to prior art, is that adding combs connected to the central disk structure, at the points of maximum vibration amplitudes, increases the drive strength and results in significant improvement in sensitivity. This can enable the fabrication of high performance bulk-mode gyroscopes in standard commercial MEMS technologies. Prototypes were measured to operate at frequencies of ~1.5 MHz, with quality factors of ~33,000, at a 10 mTorr vacuum level. Preliminary measurements using discrete electronics show a rate sensitivity of 0.31 μV/°/sec, corresponding to a capacitance sensitivity of 0.43 aF/°/sec/electrode.
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