Method for automatically calibrating a camshaft sensor for a motor vehicle engine and associated sensor
US-2018356256-A1 · Dec 13, 2018 · US
Rotation angle detection apparatus
US8942952B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8942952-B2 |
| Application number | US-201213408415-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 29, 2012 |
| Priority date | Mar 9, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 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 first third harmonic component removing portion calculates an approximate value (sin θ) n of a signal sin θ that is an output signal of a first magnetic sensor from which third harmonic components have been removed. A second third harmonic component removing portion calculates an approximate value (cos θ) n of a signal cos θ that is an output signal of a second magnetic sensor from which third harmonic components have been removed. A rotation angle calculation portion calculates a rotation angle θ of a rotor based on the approximate value (sin θ) n of sin θ, which has been calculated by the first third harmonic component removing portion and the approximate value (cos θ) n of cos θ, which has been calculated by the second third harmonic component removing portion.
First claim
Opening claim text (preview).
What is claimed is: 1. A rotation angle detection apparatus, comprising: a magnet that rotates as a rotor rotates, and that has multiple magnetic poles arranged in a circumferential direction of the magnet; a first magnetic sensor that outputs, as the magnet rotates, a sinusoidal signal on which a third harmonic component is superimposed; a second magnetic sensor that outputs, as the magnet rotates, a sinusoidal signal on which a third harmonic component is superimposed and of…
Assignees
Inventors
Classifications
Physics · mapped topic
- G01D5/24471Primary
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 US8942952B2 cover?
- A first third harmonic component removing portion calculates an approximate value (sin θ) n of a signal sin θ that is an output signal of a first magnetic sensor from which third harmonic components have been removed. A second third harmonic component removing portion calculates an approximate value (cos θ) n of a signal cos θ that is an output signal of a second magnetic sensor from which th…
- Who is the assignee on this patent?
- Ueda Takeshi, Jtekt Corp
- What technology area does this patent fall under?
- Primary CPC classification G01D5/24471. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 27 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).