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本文介绍了国内外液压缸行程测量的方法和发展趋势。着重介绍了现有行程传感液压缸的原理、结构，并对几种行程测量方法进行了比较，指出了行程传感器检测液压缸行程的设计过程中必须解决的问题和发展方向。
This article introduces the methods and trends of cylinder stroke measurement at home and abroad. The principle and structure of the existing stroke sensing hydraulic cylinder are emphatically introduced, and several stroke measuring methods are compared. The problems and development directions that the stroke sensor needs to solve in the process of detecting the stroke of the hydraulic cylinder are pointed out.