通过反馈随动机构改善霍尔传感器位移测量范围

Abstract

霍尔器件可用于微位移测量,但实用时要设计复杂的磁路以保证在测量范围内为均匀梯度磁场。通常只能测1MM左右的位移,这限制了其应用范围。采用反馈随动机构带动霍尔传感器跟踪被测体的位移,从而大大扩大了位移的测量范围,且不需要在测量中保持均匀梯度磁场。

Hore unit can be used to microdisplacement measurement.But it is necessary to design a complex magnetic route to ensure the even grad magnetic field within measuring field.Usually it can only measure about 1 mm displacement,which deeply restrict its application.In this paper a feedback random framework is used to drive Hore sensor to track the displacement of the measured object.This framework greately enlarges the measure range and it can also work in non-even grade magnetic field.