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Angle sensor

一种角度传感器、辅助齿轮的技术，应用在转换传感器输出、仪器、采用机械装置传递传感构件等方向，能够解决常规角度传感器有问题、影响准确性、转动量测量误差等问题，达到增加非线性、准确角度测量、减少误差比的效果

Active Publication Date: 2012-07-18
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Here, since the rotation number of the main gear must be measured using the rotation number of the auxiliary gear, the scale factor may affect the accuracy when measuring the rotation number of the main gear
Therefore, the conventional angle sensor is problematic due to the large value of the scale factor, so that a measurement error of the amount of rotation occurs

Method used

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Examples

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Embodiment Construction

[0018] Hereinafter, an angle sensor according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0019] In the following, reference will be made to figure 1 The angle sensor according to the present invention will be described by the construction of the angle sensor shown in .

[0020] In addition, the angle sensor includes a ring-shaped main gear 20 rotating together with a steering shaft of the vehicle, a second auxiliary gear 21 meshing with the main gear 20 , and a first auxiliary gear 22 meshing with the second auxiliary gear 21 .

[0021] Gears 20 , 21 and 22 are rotatably coupled to one surface of the housing 10 . The housing 10 has an approximately disk shape, and an opening is formed in a central portion of the housing 10 to correspond to the hollow portion of the main gear 20 .

[0022] A steering shaft of the vehicle is connected to a central portion of the main gear 20 to rotate together w...

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PUM

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Abstract

Disclosed is an angle sensor, which is capable of accurately measuring an angle of a steering shaft by selecting an optimum gear ratio between main and subsidiary gears constituting the angle sensor, measures a rotation amount of a vehicle steering shaft, and includes a ring-shaped main gear (20) rotating along with the steering shaft, a first subsidiary gear (22) rotated by rotation of the main gear and having a magnet (32) coupled to a surface thereof, and a magnetic device detecting a change in magnetic field of the magnet and outputting data on a rotation amount, so that the first subsidiary gear (22) rotates four times while the main gear (20) rotates once, and a value of a scale factor is minimized during a process of acquiring valid data for measuring the angle of the main gear and thereby an error of a measured value is minimized.

Description

technical field [0001] The present invention relates generally to an angle sensor, and more particularly, to an angle sensor capable of accurately measuring the angle of a steering shaft by selecting an optimal gear ratio between a main gear and an auxiliary gear constituting the angle sensor. Background technique [0002] Generally, an auxiliary steering system supported by additional power is used as a device for ensuring steering stability of a vehicle. Typically, the assisted steering system uses hydraulic pressure. However, in recent years, an electric power steering system that consumes less power and is excellent in accuracy has been used. [0003] This electric power steering system (EPS) uses an electronic control unit to drive a motor according to the driving state detected by a vehicle speed sensor, an angle sensor, and a torque sensor, thereby ensuring stability during steering and providing quick return force, and is composed of This allows the driver to drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/30
CPCB62D15/0215B62D15/0245G01D5/145G01D5/04G01D2205/26
Inventor 申成澈
Owner LG INNOTEK CO LTD
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