Non-contact compound torque and angle position sensor

Abstract

The invention discloses a non-contact compound torque and angle position sensor, which comprises a driving gear assembly, a driven gear assembly, a measuring circuit and tested elements, wherein the driving gear assembly comprises two driving gears which are in coaxial rotation, the driven gear assembly is engaged with the driving gear assembly and is driven to rotate by the driving gear assembly, the measuring circuit is arranged between the two driving gears, the tested elements are arranged on the driven gear assembly and is driven to rotate by the driven gear assembly, the measuring circuit measures the rotating angle of the tested elements, and the torque and the angle position are calculated according to the rotating angle. The non-contact compound torque and angle position sensor has the advantages that the torque and the angle position are simultaneously calculated, the measuring range is wide, the precision is high, the structure is compact, and the assembly is simple.

Description

technical field [0001] The invention belongs to the electric power steering system (EPS) technology of automobiles, in particular to a non-contact composite torque and angle position sensor which uses a magnetically sensitive angle chip to measure angle difference and simultaneously measures steering wheel steering torque and steering wheel angle position. Background technique [0002] Knownly, the automobile electric power steering system EPS generally consists of a power steering motor controller ECU, a torque sensor, a DC motor with a clutch, a reduction gear worm gear, a mechanical steering device (including a steering wheel input and output shaft, a steering torsion bar, a steering column, Steering transmission shaft, gear, rack, etc.) consists of five parts. The controller ECU determines the size of the power assist through the torsion bar deformation signal detected by the torque sensor, and sends a current command to control the action of the power steering motor. F...

AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the defects of the contact potentiometer type sensor in the prior art, such as fast wear and tear, high maintenance cost, complex structure of the torque sensor, and singleness of torque and angle position measurement, etc., and proposes a device capable of simultaneously measuring steering wheel operating torque and steering wheel angle position Non-contact combined torque and angular position sensor

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