Motor driving circuit and method thereof
US10348228B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Aug 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor driving circuit includes a Hall sensor, a driving circuit, a phase adjuster, and a phase current zero point detector. The Hall sensor detects the rotor position of the motor and generates the Hall signal group. The driving circuit generates the initial phase changing signal according to the Hall signal group. The phase current zero point detector receives and detects the phase current zero point of the phase current signal group, and generates and outputs the phase current zero point signal. The phase adjuster determines a phase difference between the phase current zero point and the intermediate point between the first phase changing point and the second phase changing point, and adjusts the initial phase changing signal according to the phase difference to generate and output the adjusted phase changing signal to drive the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.