| 可变限幅滤波方法的参数分析与改进 |
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| 引用本文： | 吕文祥,张金柱,杨跃,黄德先.可变限幅滤波方法的参数分析与改进[J].清华大学学报(自然科学版),2012(8):1106-1111. |
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| 作者姓名： | 吕文祥 张金柱 杨跃 黄德先 |
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| 作者单位： | 清华大学自动化系;清华信息科学与技术国家实验室;中石化沧州石化分公司;云南大为制氨有限公司电仪中心 |
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| 基金项目： | 国家“九七三”重点基础研究项目(2012CB720500) |
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| 摘 要： | 针对可变限幅滤波方法,通过与常见数字滤波方法的频域和时域分析对比,证实了其优良性能。从频域和时域角度研究了其参数对截止频率和噪声衰减的影响,分析了其参数的设定原则和对信号真值跟踪性能的影响,提出了结合可变限幅滤波方法和一阶低通滤波方法的改进方法。在煤气化过程的煤粉质量流量滤波上获得了应用,证明了该方法的可实现性和有效性。
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| 关 键 词： | 数字滤波 可变限幅 频域分析 煤气化 |
Parameter analyses of an adaptive amplitude limit filtering method |
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| Lü Wenxiang,ZHANG Jinzhu,YANG Yue,HUANG Dexian.Parameter analyses of an adaptive amplitude limit filtering method[J].Journal of Tsinghua University(Science and Technology),2012(8):1106-1111. |
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| Authors: | Lü Wenxiang ZHANG Jinzhu YANG Yue HUANG Dexian |
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| Institution: | 1,2(1.Department of Automation,Tsinghua University, Beijing 100084,China; 2.Tsinghua National Laboratory for Information Science and Technology,Beijing 100084,China; 3.Cangzhou Petrochemical Company,Sinopec, Cangzhou 061000,China; 4.Yunnan DaWei Ammonia Co.Ltd.,Qujing 655338,China) |
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| Abstract: | An adaptive amplitude limit filtering method and some commonly used digital filtering methods were compared using frequency domain and time domain analyses to approve the better performance of the adaptive amplitude limit filtering method.The influence of the parameters of this method on both cut-off frequency and noise rejection was studied,with the principles of parameter configurations and the parameter influence on signal tracing being analyzed.An improved adaptive amplitude limit filtering method was then developed combined with the first-order low-pass filtering.The improved method is applied to the coal gasification process to show its validity. |
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| Keywords: | digital filtering adaptive amplitude limit frequency domain analysis coal gasification |
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