Identifying mechanical impedance of an electromagnetic load using least-mean-squares filter
US11509292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Aug 23, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/40
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load and, during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load. The method may also include implementing an adaptive filter to identify parameters of the mechanical impedance of the electromagnetic load, wherein an input of a coefficient control for adapting coefficients of the adaptive filter is a first signal derived from the back electromotive force signal and a target of the coefficient control for adapting coefficients of the adaptive filter is a second signal derived from the current signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.