Motor control apparatus, sheet conveying apparatus, document feeding apparatus, document reading apparatus, and image forming apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 28, 2019
Grant Date -
Jan 11, 2018
app pub date -
Jun 15, 2017
filing date -
Jul 7, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to an aspect of the present invention, a motor control apparatus includes a first driving circuit connected to a motor first phase winding and having H bridge circuit first switching elements, a second driving circuit connected to second phase winding of the motor and having H bridge circuit second switching elements, first and second pulse generators. a detector, an estimator, and a selector. The first pulse generator generates a first PWM signal having a first level signal and a second level signal. The second pulse generator generates a second PWM signal having a first and a second level signal. The selector selects whether to detect a driving current flowing through the first phase winding or to estimate a driving current flowing through the first phase winding. The first pulse generator generates the first PWM signal based on a driving current value output from the detector or the estimator.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- H04N Class
- 19055 Applications Filed
- 14406 Patents Issued To-Date
- 75.61 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- H04N Class
- 36.18 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 28, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 28, 2030 |
