Coherent phase switching and modulation of a linear actuator array
US12099655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2023 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Jan 4, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The technology provides a multi-actuator haptic vibration device that has a mounting platform and a pair of linear resonant actuators (LRAs) attached to the mounting platform. Each LRA has an axis of vibration and a moveable mass constrained to move backwards and forwards therealong, with the axes of vibration being arranged in a same direction. A controller is configured to produce haptic feedback as a combined output waveform on the mounting platform, by obtaining an input waveform corresponding to a haptic effect and computing a control component waveform for each LRA via either (i) pre-determined performance-timing tables or (ii) pre-determined performance-timing functions. The controller estimates a position of each moveable mass, controls the position of each moveable mass, and controls each LRAs with its respective computed control component waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.