位移檢測裝置是電液位置伺服控制、同步控制系統中的關鍵環節。基于霍耳效應,本文提出可集成的液壓缸位移檢測方法,詳細介紹了該方法的原理、傳感器與液壓缸的集成方式、結構、特點和使用場合。通過實驗, 研究了液壓缸運動速度變化、傳感器探頭與活塞桿表面間隙變化及活塞桿凹槽涂層對測量信號的影響,同時設計了傳感器的信號處理電路。
關鍵詞: 液壓缸　位移檢測　霍耳傳感器
Abstract :Position measurement is a key technique of elect ro - hydraulic cont rol system. Based on vortex principle and hall effect , a position measuring method that can be integrated into hydraulic cylinder was presented. In the paper the measuring principles , integrated way of sensor in hydraulic cylinder , feature and applying occasion are analyzed in detail. By means of experiment s , the influ2 ence on measurement signal of hydraulic cylinder velocity , gap between sensor and piston rod and smearing layer on rod surface are studied. At the same time , the elect ronic circuit of measurement sensor is designed.
Keywords : Hydraulic cylinder , position measurement 　Hall t ransducer.