Recording apparatus, motor control apparatus, and motor control method
US6853161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2003 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jul 25, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/0009
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A motor control apparatus which can improve detection accuracy of control information and stabilize a control system includes a detector for detecting first pulse information which corresponds to the drive speed of a driven object and second pulse information out of phase with the first pulse information; edge detectors for detecting rising edges and falling edges of the detected first pulse information and second pulse information; edge interval measuring units for measuring edge-to-edge periods using the detected rising edges and falling edges; a calibrator for calibrating the measured edge-to-edge periods with a reference period for driving the driven object at constant speed; a corrector for correcting the first pulse information and second pulse information based on the calibration; and a controller for generating control commands to drive the driven object based on the corrected first pulse information and second pulse information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.