Power tool
US10770993B2 · kind B2 · utility
1Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Mar 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A duty ratio under different working conditions is determined according to an analysis of a characteristic parameter x of a motor of a power tool and then a drive circuit is controlled with the duty ratio to drive the motor to operate. It is only needed to calculate the duty ratio without needing to make any variable to the circuit hardware or the mechanical structure of the power tool. That is, the duty ratio can be adjusted to achieve optimized control of the motor, thereby optimizing the working performance such as an output torque of the power tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.