Sensorless motor control for a power tool
US11833655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Apr 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.