کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5008323 1461846 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved mathematical operations based calibration method for giant magnetoresistive current sensor applying B-Spline modeling
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Improved mathematical operations based calibration method for giant magnetoresistive current sensor applying B-Spline modeling
چکیده انگلیسی
Nowadays, giant magnetoresistance (GMR) based sensor technology is widely used in numerous industrial applications. However, an inexpensive and efficient method for compensating the nonlinearity of GMR spin valve sensor is still under the industrial expectation, which limits the applications of the GMR sensors. By applying the B-Spline modeling, excellent results were achieved; nevertheless, a calibration with several hundreds of measured data points over dozens of temperatures had to be conducted. In this paper an improved mathematical operations based calibration method for GMR spin valve type current sensors applying B-Spline modeling is introduced. This method allows a calibration for each further sensor applying B-Spline modeling with only two temperatures and per temperature only five measurement points. In comparison with the original calibration effort for B-Spline modeling, the new calibration method with minimized efforts showed an outstanding measurement accuracy of ±0.6% at a nominal current of 50 A in a temperature range from −20 °C to 80 °C. Due to the unexpected linear temperature behavior of the magnetic parameters, mainly of the uniaxial anisotropy to the exchange direction anisotropy ratio (Ku/Ked), only 5 measurement points at two different temperatures were necessary for our new calibration method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 254, 1 February 2017, Pages 109-115
نویسندگان
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