Low-latency impedance estimation for controlling a reluctance motor
US11522483B2 · kind B2 · utility
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4References
19Claims
0Family size
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Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A haptic system includes a haptic engine in which a reluctance motor is driven by a driver controller operated in conjunction with an impedance-estimator that uses amplitude-modulated calibration signals. An enveloped-calibration signal is superimposed on a haptic-drive signal to quickly, and accurately, estimate the driving coil's impedance, while minimizing power penalty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.