Motor controller, sheet conveying device, and image forming apparatus
US9670017B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2016 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Feb 17, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/262
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A motor controller includes a drive control portion. The drive control portion is configured to: execute feedback control of a drive current to be supplied to a drive motor, by using an inputted control signal indicating a target rotation speed for the drive motor and a detection signal of a rotation speed detection portion configured to detect a rotation speed of the drive motor; control the drive current in a first control period in which the target rotation speed is changed, such that the drive current is equal to or less than a predetermined first upper limit; and control the drive current in a second control period in which the target rotation speed is constant, such that the drive current is equal to or less than a predetermined second upper limit less than the first upper limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.