Linear Position Sensing through Conductive Wall without Permanent Magnet

Proceedings

Vyhnanek, Jan¹ 

关键词: position sensor;    fluxgate;    pneumatic actuator;   

DOI  :  10.3390/proceedings1040390

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

A linear position sensor for pneumatic actuators is presented. Position of the piston rod made of ferromagnetic material is detected by low frequency magnetic field which penetrates the aluminum wall of the cylinder. The sensor consists of an array of integrated fluxgate sensors and two excitation saddle coils mounted outside the actuator. The method does not need a permanent magnet attached to the piston as required by common magnetic position sensors.

【 授权许可】

CC BY