Methods and apparatus for characterizing magnetic properties of materials
US8633686B1 · kind B1 · utility
1Cited by
3References
12Claims
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Key dates
| Filing date | May 25, 2007 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Jan 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for characterizing magnetic properties of materials, such as a material's anhysteretic B-H characteristic or its permeability as a function of B or H. A test apparatus for determining these magnetic properties is constructed to yield a symmetrical field distribution through material being tested to avoid localized saturation within the material. Characterization methods take into account radial variations in tangential field intensities when calculating the magnetic properties. The calculations are obtained as solutions of optimization problems through optimization methods such as genetic algorithms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.