Apparatus and method for controlling a haptic actuator
US10298163B2 · kind B2 · utility
5Cited by
1References
19Claims
0Family size
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Key dates
| Filing date | Jul 5, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jul 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A haptic system with a haptic actuator and a voltage sensor coupled to the haptic actuator, to sense a voltage across the haptic actuator. The voltage across the haptic actuator has a back electromotive force component. There is a current regulator coupled to the haptic actuator and to the voltage sensor. The current regulator is adapted to provide a current signal to drive the haptic actuator and to adjust the current signal based on the back electromotive force component. For example, the voltage across the haptic actuator may be a direct voltage or a representation of the voltage such as a filtered value of the voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.