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Steering system planetary gear absolute angle output corner sensor

A technology of rotation angle sensor and planetary gear, which is applied in the field of sensors, can solve the problems of high installation requirements, small measurement range, and the need for light sources, etc., and achieve the effects of low environmental requirements, high position repeatability accuracy, and wide measurement range

Inactive Publication Date: 2011-08-03
WUHAN UNIV OF TECH +1
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  • Description
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AI Technical Summary

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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  • Steering system planetary gear absolute angle output corner sensor
  • Steering system planetary gear absolute angle output corner sensor
  • Steering system planetary gear absolute angle output corner sensor

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Embodiment Construction

[0022] The steering system planetary gear absolute angle output rotation angle sensor provided by the present invention is mainly composed of a ring gear 1, a sun gear 3, a planetary gear 7, a CPU control unit 11 and a Hall sensor. Such as figure 1 , figure 2 and image 3 As shown: there is a pair of magnetic poles on the ring gear 1 and the sun gear 3 respectively, and Hall sensors are arranged at a distance of 2mm from the magnetic poles, a total of four Hall sensors. The four Hall sensors are divided into two groups, and each group forms a 90-degree angle with each other to measure the angular rotation of the sun gear and the ring gear respectively. When the steering wheel of the car rotates, the sun gear rotates at a speed of 1:1. The sun gear is fixed on the steering column 9, and the steering column is fixedly connected with the steering wheel. There are 3 planetary gears, which are evenly distributed. They are fixedly installed on the planet carrier 6, can only rota...

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Abstract

The invention relates to a steering system planetary gear absolute angle output corner sensor, mainly composed of a gear ring (1), a sun gear (3), planetary gears (7), a CPU control unit (11) and Hall sensors; wherein the sun gear is a magnetic gear, and the sun gear and the gear ring are all provided with a pair of magnetic poles; the sun gear is fixed on a steering column (9), and the steering column is fixedly connected with an auto steering wheel; the quantity of the planetary gears is three, the planetary gears are evenly distributed and fixedly arranged on a planet carrier (9) and are connected with the sun gear and the gear ring in a meshed way, and the planet carrier is fixed at the upper part of a sleeve; a pair of Hall sensors are respectively arranged near the sun gear and the magnetic poles of the gear ring, and each pair of Hall sensors are arranged in 90 degrees; and the Hall sensors are connected with the CPU control unit (11) by a data line. The invention has the advantages of low requirement on environment, high cost performance, wide measurement range, insensitivity to error caused by temperature and convenient installation.

Description

technical field [0001] The invention relates to a sensor, in particular to a steering system planetary gear absolute angle output rotation angle sensor, which is a sensor for measuring the rotation angle in an 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 some light-transmittin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30B62D5/04B62D15/02
Inventor 杨胜兵
Owner WUHAN UNIV OF TECH
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