Self-calibrating linear voltage differential transformer demodulator
US10132663B2 · kind B2 · utility
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Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration system includes an excitation module that introduces an excitation signal to a primary coil of a differential transformer, a measurement module that measures, at a first phase shift, a positive value of an induced signal. The induced signal is caused by the excitation signal on a secondary coil of the differential transformer. The system further includes a calculation module that compares the positive value to a last positive value to form a compared positive value, and a calibration module that changes the first phase shift based on the compared positive value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.