Measurement and control from frequency to phase based on virtual signal reconstruction
| Autor: | Miao Miao, Xiaoxia Ge, Faxi Chen, Lina Bai, Zhiqi Li, Longfei Xu, Jingbiao Chen, Wei Zhou |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Phase difference
Nominal frequency Computer science Signal reconstruction Acoustics Phase (waves) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Signal Transformation (function) 0103 physical sciences Virtual reconstruction Range (statistics) 010306 general physics 0210 nano-technology Instrumentation |
| Zdroj: | The Review of scientific instruments. 89(1) |
| ISSN: | 1089-7623 |
| Popis: | A virtual reconstruction method of directly capturing phase information between different nominal frequency signals, without frequency transformation, is proposed in this paper, building a virtual standard frequency signal whose frequency equals the measured nominal frequency and then making continuous comparison in the measuring gate which is synchronous with multiple periods between the measured signal and the reference frequency signal. Phase variations of the measured signal in every continuous gate are determined, and continuous phase-measuring is implemented. The experimental result verifies this special method for directly processing the phase difference between different nominal frequency signals and realizes a comparison precision of 10-17/day in a wide range. |
| Databáze: | OpenAIRE |
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