A. Buffoli, Pietro Segala, M. Gadola, T. Verdot, P. Robert, G. Langfelder
{"title":"基于nems的导航级陀螺仪零速率偏移和尺度因子漂移的根源研究","authors":"A. Buffoli, Pietro Segala, M. Gadola, T. Verdot, P. Robert, G. Langfelder","doi":"10.1109/INERTIAL56358.2023.10104013","DOIUrl":null,"url":null,"abstract":"The paper researches on the origin of scale-factor (SF) and zero-rate-offset (ZRO) drift in gyroscopes based on NEMS resistive sensing, towards effective calibration and compensation for further performance improvement. It is shown that the SF drift is affected by the mode-split behaviour in temperature, induced by differences in the temperature coefficient of frequency (TCf) of the two modes, and further perturbed by softening/hardening in operation. Measuring the mode-split with 10-mHz accuracy enables to understand the behaviour and adjust the drive motion to reduce the mode-split drift by a factor 100. At the same time, it is shown how temperature tracking via the drive-mode resonance, and following output compensation, brings down stability to values below 0.01 °/hr.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"33 12","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Searching for the Origin of Zero-Rate Offset and Scale-Factor Drift in Nems-Based Nav-Grade Gyroscope\",\"authors\":\"A. Buffoli, Pietro Segala, M. Gadola, T. Verdot, P. Robert, G. Langfelder\",\"doi\":\"10.1109/INERTIAL56358.2023.10104013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The paper researches on the origin of scale-factor (SF) and zero-rate-offset (ZRO) drift in gyroscopes based on NEMS resistive sensing, towards effective calibration and compensation for further performance improvement. It is shown that the SF drift is affected by the mode-split behaviour in temperature, induced by differences in the temperature coefficient of frequency (TCf) of the two modes, and further perturbed by softening/hardening in operation. Measuring the mode-split with 10-mHz accuracy enables to understand the behaviour and adjust the drive motion to reduce the mode-split drift by a factor 100. At the same time, it is shown how temperature tracking via the drive-mode resonance, and following output compensation, brings down stability to values below 0.01 °/hr.\",\"PeriodicalId\":236326,\"journal\":{\"name\":\"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)\",\"volume\":\"33 12\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-03-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/INERTIAL56358.2023.10104013\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INERTIAL56358.2023.10104013","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Searching for the Origin of Zero-Rate Offset and Scale-Factor Drift in Nems-Based Nav-Grade Gyroscope
The paper researches on the origin of scale-factor (SF) and zero-rate-offset (ZRO) drift in gyroscopes based on NEMS resistive sensing, towards effective calibration and compensation for further performance improvement. It is shown that the SF drift is affected by the mode-split behaviour in temperature, induced by differences in the temperature coefficient of frequency (TCf) of the two modes, and further perturbed by softening/hardening in operation. Measuring the mode-split with 10-mHz accuracy enables to understand the behaviour and adjust the drive motion to reduce the mode-split drift by a factor 100. At the same time, it is shown how temperature tracking via the drive-mode resonance, and following output compensation, brings down stability to values below 0.01 °/hr.
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