Absolute angle output sensor for planet magnet wheel of steering system of automobile

An automobile steering system and absolute angle technology, applied in the field of sensors, can solve the problems of small measurement range, high installation requirements, temperature sensitivity, etc., and achieve the effect of small measurement error, low working environment requirements, and no wear output waveform

Inactive Publication Date: 2010-12-29
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The resistive steering angle sensor is composed of a resistor and a sliding contact, and its defects are: first, it is sensitive to temperature; second, the deviation is relatively large, about ±1 degree; third, the measurement range is too small, only ±100 degrees
The defects of the photoelectric steering angle sensor are: first, the installation requirements are high and a light source is needed; second, the price is expensive

Method used

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  • Absolute angle output sensor for planet magnet wheel of steering system of automobile
  • Absolute angle output sensor for planet magnet wheel of steering system of automobile
  • Absolute angle output sensor for planet magnet wheel of steering system of automobile

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Embodiment Construction

[0023] The automobile steering system planetary magnetic wheel absolute angle output sensor provided by the present invention has a structure such as figure 1 , figure 2 and image 3 As shown: it is composed of outer magnetic ring 1, inner magnetic ring 3, planetary magnetic wheel 7, CPU control unit 11 and Hall sensor, wherein: inner magnetic ring is fixed on steering column 9, and the steering column is fixedly connected with steering wheel ; There are 3 planetary magnetic wheels, which are evenly distributed. They are installed on the planet carrier 6 and can only rotate, and are engaged with the inner magnetic ring for transmission, and are also engaged with the outer magnetic ring for transmission; the planet carrier is fixed on the upper part of the sleeve; when the steering wheel When driving the inner magnetic ring to rotate at a speed of 1:1, the inner magnetic ring drives the planetary magnetic wheel to rotate by meshing, and then the planetary magnetic wheel drive...

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Abstract

The invention relates to an absolute angle output sensor for a planet magnet wheel of a steering system of an automobile, comprising an outer magnet coil (1), an inner magnet ring(3), planet magnet wheels (7), a CPU control unit (11) and Hall sensors, wherein the inner magnet ring is fixed on a steering column (9) fixedly connected with a steering wheel of the automobile; the three planet magnet wheels are uniformly distributed, are installed on a planet carrier (6), can only perform autorotation, and are respectively in mesh transmission with the inner magnet ring and the outer magnet coil; the planet carrier is fixed on the upper part of a sleeve barrel; a pair of Hall sensors are respectively installed adjacently to the magnetic poles of the inner magnet ring and the outer magnet coil,and are arranged to form a right angle; and each pair of the Hall sensors are connected with the CPU control unit by data wires. The invention has the advantages of low requirement on environment, high cost performance, wide range of measurement, insensitivity to error caused by temperature, convenient installation, less measurement error, etc.

Description

technical field [0001] The invention relates to a sensor, in particular to an absolute angle output sensor of a planetary magnetic wheel in an automobile steering system, which is a sensor for measuring the rotation angle in the automobile steering system. Background technique [0002] Currently used resistive and photoelectric steering angle sensors. [0003] The resistive steering angle sensor is composed of a resistor and a sliding contact. Its defects are: first, it is sensitive to temperature; second, the deviation is relatively large, about ±1 degree; third, the measurement range is too small, only ±100 degrees. [0004] The photoelectric steering angle sensor consists of a photosensitive element, a light-transmitting film and a corresponding signal processing circuit. The photoelectric sensor includes at least two photosensitive elements, a light-transmitting film and a corresponding signal processing circuit. The light-transmitting film refers to a film in which som...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30
Inventor 杨胜兵过学迅徐涛
Owner WUHAN UNIV OF TECH
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