{"title":"确定低功值传感器的等效电路参数","authors":"W. Marshall, G. Brigham","doi":"10.1121/1.1756031","DOIUrl":null,"url":null,"abstract":"A new analytical technique for deriving transducer equivalent circuit parameters from complex electrical admittance data is presented. The new method handles low figure of merit transducers (those having weak coupling and/or low Qm), but does not require phasor subtraction or similar geometrical manipulations of the admittance loop. Four parameters of the unloaded, single degree-of-freedom equivalent circuit are extracted from a simple analysis of the capacitance curve, B(ω)/ω, and one additional parameter is obtained from the dissipation curve, G(ω)/B(ω). This technique simplifies the evaluation of developmental transducers, particularly those using marginal or weakly polarized materials.","PeriodicalId":87384,"journal":{"name":"Acoustics research letters online : ARLO","volume":"17 5 1","pages":"106-110"},"PeriodicalIF":0.0000,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"16","resultStr":"{\"title\":\"Determining equivalent circuit parameters for low figure of merit transducers\",\"authors\":\"W. Marshall, G. Brigham\",\"doi\":\"10.1121/1.1756031\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A new analytical technique for deriving transducer equivalent circuit parameters from complex electrical admittance data is presented. The new method handles low figure of merit transducers (those having weak coupling and/or low Qm), but does not require phasor subtraction or similar geometrical manipulations of the admittance loop. Four parameters of the unloaded, single degree-of-freedom equivalent circuit are extracted from a simple analysis of the capacitance curve, B(ω)/ω, and one additional parameter is obtained from the dissipation curve, G(ω)/B(ω). This technique simplifies the evaluation of developmental transducers, particularly those using marginal or weakly polarized materials.\",\"PeriodicalId\":87384,\"journal\":{\"name\":\"Acoustics research letters online : ARLO\",\"volume\":\"17 5 1\",\"pages\":\"106-110\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-04-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acoustics research letters online : ARLO\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1121/1.1756031\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustics research letters online : ARLO","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1121/1.1756031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Determining equivalent circuit parameters for low figure of merit transducers
A new analytical technique for deriving transducer equivalent circuit parameters from complex electrical admittance data is presented. The new method handles low figure of merit transducers (those having weak coupling and/or low Qm), but does not require phasor subtraction or similar geometrical manipulations of the admittance loop. Four parameters of the unloaded, single degree-of-freedom equivalent circuit are extracted from a simple analysis of the capacitance curve, B(ω)/ω, and one additional parameter is obtained from the dissipation curve, G(ω)/B(ω). This technique simplifies the evaluation of developmental transducers, particularly those using marginal or weakly polarized materials.