Linear Position Sensor System

Abstract

A position sensor measures magnetic flux of a magnetic field generated by a magnet system along a first direction and a second direction. A value related to the measured magnetic flux in the first direction is adjusted based on a first gain and a first offset determined based on the reference magnetic flux and the measured magnetic flux in the first direction . A value related to the measured magnetic flux in the second direction is adjusted based on a second gain and a second offset determined based on the reference magnetic flux and the measured magnetic flux in the second direction . The position of the magnet system relative to the position sensor at a given time may then be determined based on the adjusted values ​​of the magnetic flux in the first and second directions at the given time.

Description

technical field [0001] Linear position sensor systems are commonly used to monitor the movement of mechanical components such as hydraulic actuators, braking systems, or transmissions. In known linear position sensor systems comprising a magnet and a position sensor, the position sensor measures the magnetic flux produced by the magnet when the magnet moves in a linear direction relative to the position sensor and produces An electrical signal that varies with the position of the magnet. Background technique [0002] figure 1 is a graph showing the output of a known linear position sensor system. figure 1 The magnetic flux 102 in a first direction as measured by a position sensor is shown versus the position of the magnet relative to the position sensor. figure 1 Additionally shown is the magnetic flux 104 in the second direction as measured by the position sensor versus the position of the magnet relative to the position sensor. The problem is that the current linear po...

AI Technical Summary

Problems solved by technology

The problem is that the current linear position sensor system is only accurate in the region 105 between the approximate first zero crossing point 106 of the magnetic flux along the first direction and the approximate second zero crossing point 108 of the magnetic flux along the first direction, Wherein deviations with respect to ambient temperature, geometry of the linear position sensor system, air gap within the linear position sensor system, material of the magnet, angle of magnetization, and polar magnetization etc. ability to position the sensor with minimal impact on

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