Encoder
US-2018292238-A1 · Oct 11, 2018 · US
Rotation angle detection device and electric power steering apparatus using same
US8949068B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8949068-B2 |
| Application number | US-201113287341-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 2, 2011 |
| Priority date | Nov 5, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A rotation angle detection device uses a control unit to acquire output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 that are from four half-bridges, from the four half-bridges. The control unit calculates a rotation angle θ of a detection target based on the acquired output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 . The control unit checks whether a mean value fixation abnormality is caused to any one of the four output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 , based on calculation values C 1 or C 4 that are derived/yielded from the four output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 . The mean value fixation abnormality caused to the output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 that yielded the calculation values C 1 and C 4 is appropriately determined.
First claim
Opening claim text (preview).
What is claimed is: 1. A rotation angle detection device comprising: a circuit part having plural sensor element groups for sensing a rotating magnetic field from a detection target, in which impedance of each of sensor elements in the sensor element groups changes according to a rotation angle of the detection target; an output signal acquisition part for acquiring, from each of plural sensor element groups, an output signal; a rotation angle calculation part for calculating…
Assignees
Inventors
Classifications
- G01D5/24457Primary
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8949068B2 cover?
- A rotation angle detection device uses a control unit to acquire output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 that are from four half-bridges, from the four half-bridges. The control unit calculates a rotation angle θ of a detection target based on the acquired output signals Vx 1 , Vx 2 , Vy 1 , Vy 2 . The control unit checks whether a mean value fixation abnormality is caused to any one of the f…
- Who is the assignee on this patent?
- Satou Takafumi, Uryu Nobuhiko, Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification G01D5/24457. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).