Rotation-angle detection device and method, and image processing apparatus
US-2015009517-A1 · Jan 8, 2015 · US
Angle detector, motor drive controller, and motor device
US9529026B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9529026-B2 |
| Application number | US-201514693025-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 22, 2015 |
| Priority date | Apr 25, 2014 |
| Publication date | Dec 27, 2016 |
| Grant date | Dec 27, 2016 |
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Abstract
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An angle detector includes a first signal level detector to detect a sensor processed signal having a maximum signal level of a first set of sensor processed signals obtained by signal processing of multiple sensor signals, each of the multiple sensor signals having a signal level corresponding to a rotational position of a rotor of a motor having multiple coils, a signal level adjuster to adjust each signal level of the first set of the sensor processed signals to match the sensor processed signal having a maximum signal level with a first adjustment level, a signal selector to single out a selection signal from a second set of sensor processed signals adjusted by the signal level adjuster, and a phase detector to output a phase information signal in which the signal level of selection signal selected by the signal selector corresponds to a phase of the rotor.
First claim
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What is claimed is: 1. An angle detector comprising: a first signal level detector to detect a sensor processed signal having a maximum signal level of a first set of sensor processed signals obtained by signal processing of multiple sensor signals, each of the multiple sensor signals having a signal level corresponding to a rotational position of a rotor of a motor having multiple coils, a signal level adjuster to adjust each signal level of the first set of the sensor processe…
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- What does patent US9529026B2 cover?
- An angle detector includes a first signal level detector to detect a sensor processed signal having a maximum signal level of a first set of sensor processed signals obtained by signal processing of multiple sensor signals, each of the multiple sensor signals having a signal level corresponding to a rotational position of a rotor of a motor having multiple coils, a signal level adjuster to adju…
- Who is the assignee on this patent?
- Furuse Katsuhisa, Ricoh Co Ltd
- 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 Dec 27 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).