Motor control device and image forming apparatus with the same
US9448519B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A motor control device includes a motor device, a speed command section, and a load detecting section. The motor control device includes: a motor configured to drive a rotating body and output a speed notification signal having an oscillation frequency corresponding to a rotational speed of the rotating body; and a driver IC configured to control a rotational speed of the motor. The speed command section is provided outside the motor device and configured to output a speed command signal designating a rotational speed of the motor to the driver IC. The load detecting section is provided outside the motor device and configured to derive a phase difference between the speed command signal and the speed notification signal and detect a load on the motor based on the phase difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.