{"title":"NIST小扭矩测试仪的设计","authors":"L. Chao","doi":"10.51843/wsproceedings.2020.14","DOIUrl":null,"url":null,"abstract":"After the recent redefinition of the International System of Units (SI), torque no longer needs to be traceable to a calibrated mass in a gravitational field suspended from a known lever arm and disseminated through a chain of torque transducers. An SI-traceable torque can be directly realized using the Kibble principle where a torque is generated by a calibrated electromagnetic transducer. Here, a set of theoretical designs for a new instrument aimed at direct realization of torque to 0.1% accuracy is analyzed and examined for feasibility. With careful attention to magnet design, a robust and easily implemented torque calibrator can be built.","PeriodicalId":422993,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2020","volume":"26 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"The Design of an Instrument to Realize Small Torque at NIST \",\"authors\":\"L. Chao\",\"doi\":\"10.51843/wsproceedings.2020.14\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"After the recent redefinition of the International System of Units (SI), torque no longer needs to be traceable to a calibrated mass in a gravitational field suspended from a known lever arm and disseminated through a chain of torque transducers. An SI-traceable torque can be directly realized using the Kibble principle where a torque is generated by a calibrated electromagnetic transducer. Here, a set of theoretical designs for a new instrument aimed at direct realization of torque to 0.1% accuracy is analyzed and examined for feasibility. With careful attention to magnet design, a robust and easily implemented torque calibrator can be built.\",\"PeriodicalId\":422993,\"journal\":{\"name\":\"NCSL International Workshop & Symposium Conference Proceedings 2020\",\"volume\":\"26 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"NCSL International Workshop & Symposium Conference Proceedings 2020\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.51843/wsproceedings.2020.14\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"NCSL International Workshop & Symposium Conference Proceedings 2020","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.51843/wsproceedings.2020.14","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Design of an Instrument to Realize Small Torque at NIST
After the recent redefinition of the International System of Units (SI), torque no longer needs to be traceable to a calibrated mass in a gravitational field suspended from a known lever arm and disseminated through a chain of torque transducers. An SI-traceable torque can be directly realized using the Kibble principle where a torque is generated by a calibrated electromagnetic transducer. Here, a set of theoretical designs for a new instrument aimed at direct realization of torque to 0.1% accuracy is analyzed and examined for feasibility. With careful attention to magnet design, a robust and easily implemented torque calibrator can be built.