Motor control system and motor driving circuit
US10186993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Aug 8, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control system includes a motor driving circuit and a motor. The motor driving circuit includes a control module, a PWM signal detecting module, a transient state detecting module and a driving module. The PWM signal detecting module is electrically connected to the control module to receive a PWM signal and to convert the PWM signal into a first digital PWM control signal. The transient state detecting module provides a second digital PWM control signal to the control module according to the first digital PWM control signal at a first time point and the first digital PWM control signal at a second time point. The driving module receives at least one driving signal from the control module. The control module determines whether to turn off a low side switch of the driving module according to the second digital PWM control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.