Driving-unit operation method and controller
US12405440B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 10, 2020 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Dec 6, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/103
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving-unit operation method includes: generating pulse blocks on the basis of driving pulses; and modifying a driving signal in accordance with a position error signal. In the modifying the driving signal, when the position error signal is in a first range, the shape of the driving pulses is modified so as to form a first driving-pulse shape, and the pulse-block duty cycle is set to a first pulse-block duty cycle value, whereas when the position error signal is in a second range, the shape of the driving pulses is modified so as to form a second driving-pulse shape, and the pulse-block duty cycle is set to a second pulse-block duty cycle value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.