针对电涡流传感器的测试行程和测试精度的矛盾,文献［1］ 提出了分级随动式的解决方案,该文给出了分级随动式电涡流传感器系统的设计方法、设计准则,给出了实验结果,提出了几种提高测试精度的方案“,”Based on the article [1],the method was brought forward to solve the dilemma of Eddy Current sensors\'\' accuracy and range of testing, which was making the sensing component move following the object. A brief introduction of design method and principle was given in this paper. The test results were described and some ways to improve testing accuracy were proposed.