Ripple minimization by proper as/ts magnet arrangement in electric power assisted steering apparatus
US-2019047619-A1 · Feb 14, 2019 · US
Absolute steering angle sensor assembly
US11292518B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11292518-B2 |
| Application number | US-201816105011-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 20, 2018 |
| Priority date | Aug 18, 2017 |
| Publication date | Apr 5, 2022 |
| Grant date | Apr 5, 2022 |
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- Title
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Abstract
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An absolute steering angle sensor includes a single main gear having first gear teeth with a first pitch, second gear teeth with a second pitch, wherein the first and second gear pitches are different. A first magnet gear is driven by the first gear teeth, wherein the first magnet gear has a first gear profile and a first diameter. A second magnet gear is driven by the second gear teeth, wherein the second magnet gear has a second gear profile and a second diameter. The first and second gear profiles are different, and the first and second diameters are different. A first magnet rotates with the first magnet gear and emits a first magnetic field, and a second magnet rotates with the second magnet gear and emits a second magnetic field. A sensor assembly measures strengths of the first and second magnetic fields and calculates an absolute steering angle.
First claim
Opening claim text (preview).
What is claimed is: 1. An absolute steering angle sensor assembly comprising: a single main gear, wherein the main gear has first gear teeth with a first pitch, second gear teeth with a second pitch, and the first and second gear pitches are different; a first magnet gear driven by the first gear teeth, wherein the first magnet gear has a first gear profile and a first diameter; a second magnet gear driven by the second gear teeth, wherein the second magnet gear has a second gear profile and a second diameter, the first and second gear profiles are different, and the first and second diameters are different; wherein at least one of the first and second magnet gears engages into the single main gear with an anti-backlash gear, the at least one of the magnet gears and the anti-backlash gear being elastically biased relative to each other around a joint central axis to reduce play between the at least one magnet gear and the single main gear; a first magnet rotating with the first magnet gear and emitting a first magnetic field; a second magnet rotating with the second magnet gear and emitting a second magnetic field; and a sensor assembly measuring strengths of the first and second magnetic fields and calculating an absolute steering angle.
Assignees
Inventors
Classifications
- B62D15/0215Primary
by measuring on the steering column · CPC title
Means or methods for determination of the central position of the steering system, e.g. straight ahead position · CPC title
for measuring angles or tapers; for testing the alignment of axes · CPC title
using levers; using cams; using gearing · CPC title
- B62D15/021Primary
Determination of steering angle · CPC title
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- What does patent US11292518B2 cover?
- An absolute steering angle sensor includes a single main gear having first gear teeth with a first pitch, second gear teeth with a second pitch, wherein the first and second gear pitches are different. A first magnet gear is driven by the first gear teeth, wherein the first magnet gear has a first gear profile and a first diameter. A second magnet gear is driven by the second gear teeth, wherei…
- Who is the assignee on this patent?
- Kelsey Hayes Co
- What technology area does this patent fall under?
- Primary CPC classification B62D15/0215. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 05 2022 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).