| 一种电感式位移测量装置的设计 |
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| 引用本文： | 江学焕,关新,钟蕾,程福明. 一种电感式位移测量装置的设计[J]. 湖北汽车工业学院学报, 2011, 25(2): 46-49,61 |
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| 作者姓名： | 江学焕 关新 钟蕾 程福明 |
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| 作者单位： | 1. 武汉大学计算机学院,湖北武汉430072;湖北汽车工业学院电气与信息工程学院,湖北十堰442002
2. 湖北汽车工业学院电气与信息工程学院,湖北十堰,442002 |
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| 摘 要： | 介绍了差动变压器式位移传感器的结构和原理,给出了电感式位移测量装置的系统设计方案.该系统通过FPGA产生稳定的DDS信号作为激励源,经差分电路输出2路平衡信号:通过过采样平均滤波的方法实现噪声抑制:采用线性拟合的方法对非线性数据进行补偿,实现了位移的精确测量,测量精度较高.
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| 关 键 词： | 差动变压器 DDS信号 过采样 线性拟合 |
Design of Inductive Displacement Measuring Device |
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| Jiang Xuehuan,Guan Xin,Zhong Lei,Cheng Fumin. Design of Inductive Displacement Measuring Device[J]. Journal of Hubei Automotive Industries Institute, 2011, 25(2): 46-49,61 |
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| Authors: | Jiang Xuehuan Guan Xin Zhong Lei Cheng Fumin |
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| Affiliation: | Jiang Xuehuan1,Guan Xin,Zhong Lei,Cheng Fumin |
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| Abstract: | The structure and principle of differential transformer-type displacement sensor were introduced,and the system design scheme of the inductive displacement measuring device was given.A stable DDS signal was produced by FPGA as the excitation source,and through differential circuit,two balanced signals were output.Noise suppression was achieved by the method of average over-sampling filter.The nonlinear data was compensated by the linear fitting method,and then the accurate measurement of displacement with a high precision was realized. |
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| Keywords: | differential transformer DDS signal over-sampling linear fitting |
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