| 转子弯曲信号的特征及其零漂补偿方法 |
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| 引用本文： | 丁天怀,傅尚新,侯汝舜,赵晓明.转子弯曲信号的特征及其零漂补偿方法[J].清华大学学报(自然科学版),1996(7). |
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| 作者姓名： | 丁天怀 傅尚新 侯汝舜 赵晓明 |
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| 作者单位： | 清华大学精密仪器与机械学系 |
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| 基金项目： | 国家“八五”科技攻关项目 |
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| 摘 要： | 在转子弯曲量监测系统中，为防止由电涡流传感器获取的转子弯曲信号零点漂移所引起的对监测结果可靠性和稳定性的损害，根据转子弯曲信号虽是一种缓慢变化的交流电压信号，但信号峰谷对称中心的变化与直流电平的变化规律相似这一特征，充分利用单片微机的软件资源，提出一种以弯曲信号峰谷对称中心线为比较基准实现零漂补偿的新方法及相应的数学模型，并将它用于智能偏心监视仪的研制。分析了算法的原理误差，给出了试验结果
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| 关 键 词： | 转子 弯曲 信号特征 零漂 补偿 |
Features and a zero drift compensation method of rotor bow signals |
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| Ding Tianhuai,Fu Shangxin,Hou Rushun,Zhao Xiaoming.Features and a zero drift compensation method of rotor bow signals[J].Journal of Tsinghua University(Science and Technology),1996(7). |
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| Authors: | Ding Tianhuai Fu Shangxin Hou Rushun Zhao Xiaoming |
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| Institution: | Ding Tianhuai,Fu Shangxin,Hou Rushun,Zhao Xiaoming Department of Precision Instruments and Mechanology,Tsinghua University |
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| Abstract: | In order to protect the reliability and stability of measurement results against the detriment from zero drift of the signal acquired with eddy current sensor in the monitoring system on the rotor deflection, a method and the corresponding mathematical model are provided on the basis of the character of signal which is a slowly changing AC voltage with its symmetric central line similar to DC voltage. The method regards the symmetric central line of the signal of the deflecton as the criterion and is used in the intelligent eccentricity monitor. The theoretical error of the method is analyzed and the preliminary outcome of the experiments is given. |
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| Keywords: | rotors bow feature of the signals zero drift compensation |
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