Steering system planetary gear absolute angle output corner sensor

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...

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

Images