Patents
US 10505482 B2: Magnetic pole direction detection device
- Granted
- 2019-12-10
- Filed
- 2018-11-20 application 16196328
- Type
- Utility · 4 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In a magnetic pole direction detection device, a detecting target magnet is attached to a tip of a rotating shaft of the rotor. A magnetic detection unit outputs a detection signal which changes according to a change in a magnetic field. A magnetic pole direction calculation unit calculates a magnetic pole direction of a rotor based on the detection signal. A current detection unit detects a current flowing through each multiphase coil. A rotating magnetic field vector calculation unit calculates a vector of a rotating magnetic field based on magnitude of the detected current. A direction correction amount calculation unit calculates a direction correction amount based on a direction and magnitude of the rotating magnetic field calculated by the rotating magnetic field vector calculation unit. A magnetic pole direction correction unit corrects the calculated magnetic pole direction by using the calculated direction correction amount calculated.
Source: PVGPATDIS, file of 2026-04-10 (ipg191210.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| OMRON AUTOMOTIVE ELECTRONICS CO., LTD. 151 patents | Foreign company or organization | Ebeye, MH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Yoji Mori | Ebeye, MH | 16 | PVGPATDIS, file of 2026-04-10 | |
| Tomoya Yamanaka | Ebeye, MH | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02P | Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils | H02P21/18 | PVGPATDIS, file of 2026-04-10 |
| G01R | Measuring electric variables; measuring magnetic variables | G01R33/0094 | PVGPATDIS, file of 2026-04-10 |
| H02K | Dynamo-electric machines | H02K11/215 | PVGPATDIS, file of 2026-04-10 |
| B62D | Motor vehicles; trailers | B62D5/0463 | PVGPATDIS, file of 2026-04-10 |
| G01D | Measuring not specially adapted for a specific variable; arrangements for measuring two or more variables not covered in a single other subclass; tariff metering apparatus; measuring or testing not otherwise provided for | G01D5/16 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2018-12-18 | Assignment Assignment of assignor's interest | YAMANAKA, TOMOYA signed 2018-10-26 MORI, YOJI signed 2018-10-30 | OMRON AUTOMOTIVE ELECTRONICS CO., LTD. AICHI | 47802/489 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.