| 引用本文: | 王丹麟,马伟东,杨昕霖.基于位移传感器LVDT的信号断线故障检测[J].电力自动化设备,2011,31(12): |
| WANG Danlin,MA Weidong,YANG Xinlin.Line-break fault detection based on LVDT[J].Electric Power Automation Equipment,2011,31(12): |
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| 摘要: |
| 针对线性可变差动变压器（LVDT）信号断线检测的必要性，以及目前断线检测方法的局限性，提出一种采用软硬件结合的方式实现对LVDT信号断线检测的方法。针对不同信号断线情况采用不同的检测方法：对于反馈线圈断线采用硬件超限检测方法，对于激励线圈断线采用软件判别检测方法。通过对实际电路测试，对目前断线检测方法的局限性进行了验证，并对软硬件结合方式实现LVDT的信号断线检测进行了验证。检测方法已应用到工程应用，可有效实现对LVDT信号断线的检测。 |
| 关键词: 线性可变差动变压器 工业控制 断线 故障检测 |
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| Line-break fault detection based on LVDT |
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WANG Danlin, MA Weidong, YANG Xinlin
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Guodian Nanjing Automation Co.，Ltd.，Nanjing 210003，China
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| Abstract: |
| As it is necessary to detect the line-break fault for LVDT（Linear Variable Differential Transformer）and the current LVDT line-break detection method has limitations，a LVDT line-break detection combining hardware and software methods is presented for different line-break situations：hardware detection for feedback loop line-break and software detection for excitation loop line-break. The limitations of current detection methods and the effectiveness of the proposed method are verified by the tests for actual circuit. The proposed method has been applied to projects for LVDT line-break fault detection. |
| Key words: linear variable differential transformer industrial control line-break fault detection |
