Motor control system
US9455655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control system can suppress production costs, suppress the occurrence of unexpected excessive torque, and continue system operation as much as possible even when the diagnosis results of a monitoring device are abnormal. A computation device computes a voltage command value indicating the voltage to impose on a motor. Based on the voltage command value, the computation device generates a control signal that controls a drive device. When the diagnosis results of the monitoring device are normal, the computation device computes the voltage command value so that the absolute value of the detection value of current flowing to the motor is no greater than a second threshold, and when the diagnosis results of the monitoring device are abnormal, the computation device computes the voltage command value so that this absolute value is no greater than a third threshold that is smaller than the second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.