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Sensing device

A sensing device and sensor technology, applied in the direction of measuring devices, transportation and packaging, instruments, etc., can solve the problems of the influence of the magnetic flux value of the Hall integrated circuit and the impossibility of accurately measuring the torsion degree of the torsion bar

Active Publication Date: 2021-02-26
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when an external magnetic field is generated, since the collector in this structure functions as a path of the external magnetic field, there is a problem that the magnetic flux value of the Hall IC is affected
Therefore, the output value of the torque sensor changes, and there arises a problem that it is impossible to accurately measure the degree of torsion of the torsion bar

Method used

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Embodiment Construction

[0061] Hereinafter, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0062] However, the technical idea of ​​the present invention is not limited to certain embodiments described herein, and may be implemented in various forms. One or more elements of different embodiments may be selectively combined or replaced within the technical idea of ​​the present invention.

[0063] Also, unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention can be interpreted as having meanings that can be commonly understood by those of ordinary skill in the art to which this invention belongs, and are commonly used The meaning of terms (eg, terms defined in dictionaries) can be interpreted in consideration of the meaning in the context of related art.

[0064] In addition, terms used in the embodiments of the present invention are for describing ...

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Abstract

An embodiment relates to a sensing device comprising: a stator; and a rotor, at least a part of which is arranged on the stator. The stator comprises a stator holder, a stator body coupled to the stator holder, and a first stator tooth and a second stator tooth arranged on the stator body. The rotor comprises a rotor holder, a rotor body coupled to the rotor holder, and a magnet coupled to the rotor body. The first stator tooth comprises a first body and multiple first teeth connected to the first body and spaced apart from each other. The second stator tooth comprises a second body and multiple second teeth connected to the second body and spaced apart from each other. The multiple first teeth and the multiple second teeth overlap in the radial direction. Accordingly, the sensing device can prevent or minimize magnetic-field interference resulting from an external magnetic field generated outside during torque measurement.

Description

technical field [0001] An embodiment relates to a sensing device. Background technique [0002] Electronic Power Steering (hereafter referred to as "EPS") operates a motor in an electronic control unit according to operating conditions to ensure steering stability and provide a high degree of elasticity, thereby enabling a driver to drive safely. [0003] In order to provide appropriate torque, the EPS includes a sensor assembly configured to measure torque of a steering shaft, steering angle, and the like. The sensor assembly may include: a torque sensor configured to measure torque acting on the steering shaft; and an index sensor configured to measure angular acceleration of the steering shaft. Additionally, the steering shaft may include: an input shaft connected to the handle; an output shaft connected to the wheelside power transmission structure; and a torsion bar configured to connect the input shaft and the output shaft. [0004] The torque sensor measures the twi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/10G01L19/14
CPCG01L3/104G01L3/10G01L19/14B62D6/10
Inventor 卞晟煜
Owner LG INNOTEK CO LTD
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