System identification apparatus using spectrum analysis of resonation frequencies
US5251155A · kind A · utility
7Cited by
2References
6Claims
0Family size
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Key dates
| Filing date | Jan 23, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system identification apparatus determines a transfer function of an object to be identified for input and output signals. Predetermined frequency bands of the input and output signals are sampled through band-pass filters, and the transfer function is calculated according to a method of least squares. A characteristic part of the transfer function is found from the spectrum of the differential of the output signal, and passbands of the band-pass filters are determined to include the characteristic part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.