Estimation apparatus, estimation method, and computer readable medium
US-2024401981-A1 · Dec 5, 2024 · US
Position detector
US9470554B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9470554-B2 |
| Application number | US-201313953074-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 29, 2013 |
| Priority date | Aug 6, 2012 |
| Publication date | Oct 18, 2016 |
| Grant date | Oct 18, 2016 |
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Abstract
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A position detector includes a Hall element that detects a magnetic flux density and a temperature detection element that detects the temperature of the Hall element. In a rotation angle calculation process, a temperature correction value a is calculated by substituting a detection temperature t of the temperature detection element and a reference maximum voltage V 0 at a reference temperature t 0 for a=V 0 ×k (t−t 0 ). Next, a correction maximum voltage Vt is calculated by substituting the temperature correction value a for a temperature characteristic formula of Vt=V 0 +a. Further, a rotation angle θ of a magnet relative to the Hall element is calculated by substituting an output voltage VH of the Hall element and the correction maximum voltage Vt for θ=sin −1 (VH/Vt). Since the correction maximum voltage Vt is corrected according to the temperature, the rotation angle is accurately detected.
First claim
Opening claim text (preview).
What is claimed is: 1. A position detector comprising: a magnetic field generation element; a magnetic field detection element outputting a voltage according to a change in magnetic flux density caused when the magnetic field detection element rotates relative to the magnetic field generation element; a temperature detection element detecting a temperature of the magnetic field generation element and outputs a voltage according to the temperature detected; a storage element…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01D5/145Primary
Physics · mapped topic
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- What does patent US9470554B2 cover?
- A position detector includes a Hall element that detects a magnetic flux density and a temperature detection element that detects the temperature of the Hall element. In a rotation angle calculation process, a temperature correction value a is calculated by substituting a detection temperature t of the temperature detection element and a reference maximum voltage V 0 at a reference temperature…
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification G01D5/145. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 18 2016 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).