Apparatus and method for controlling an oscillating device
US10673367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for controlling an oscillating device is presented. In particular, a controller for adjusting the frequency of a drive signal driving a haptic actuator is presented. The controller contains a calculator adapted to receive a first and a second measurement of the electrical parameter and to calculate a difference between the first measurement and the second measurement. The first measurement is obtained at a first sampling time and the second measurement is obtained at a second sampling time. The controller is adapted to provide a control signal to adjust a frequency of the drive signal based on the difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.