Systems and methods for controlling a resonant device for generating vibrotactile haptic effects
US7639232B2 · kind B2 · utility
137Cited by
39References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Oct 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods for controlling a resonant device are described. One described method for braking an actuator includes generating a first actuator signal configured to drive the actuator, the first actuator signal having a first frequency approximately resonant to the actuator, and transmitting the first actuator signal to the actuator. The method also includes generating a second actuator signal, having a second frequency approximately 180 degrees out of phase to the first frequency, the second actuator signal configured to cause a braking force on the actuator, and transmitting the second actuator signal to the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.