Automatic load monitoring system with remote sensing
US4894787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Apr 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/0071
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel system for determining the magnitudes of loads on rotating helicopter components from signals remotely measured on the helicopter fuselage is characterized by a processor which decomposes the measured signals into corresponding Fourier components and extracts selected components therefrom. A programming module performs a multiplication on the respective Fourier components to correlate the measured components with corresponding determinative parameter values. The parameter values are established in a calibration process which is characterized by determination of the independent values of a measured signal set using a Jones orthogonalization process. The signals output from the coefficient programming module are provided to a multiplying resolver which receives synthesized reference sinusoids from a digital processor and generates time dependent signal components therefrom. These signals are ultimately summed in an analog summer circuit whose output signal corresponds to the desired parameter signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.