| 模糊聚类方法在PIO探测中的应用 |
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| 引用本文： | 颜世伟,高正红,刘艳,田福礼.模糊聚类方法在PIO探测中的应用[J].飞行力学,2011,29(5):5-9. |
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| 作者姓名： | 颜世伟 高正红 刘艳 田福礼 |
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| 作者单位： | 1. 西北工业大学 航空学院,陕西 西安,710072
2. 中国飞行试验研究院总师办,陕西 西安,710089 |
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| 摘 要： | 用于驾驶员诱发振荡(PIO)探测的特征参数可以有效地反映出PIO时飞机在频域和时域的特征,利用模糊逻辑方法对特征参数进行辨识可以有效地识别出是否发生了PIO.模糊逻辑方法中的隶属函数直接反映了特征参数的特点,其设计决定了是否能有效地对PIO进行识别.为了设计有效的隶属函数,根据特征数据的特点采用球壳型模糊聚类算法对数据...
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| 关 键 词： | 短时傅里叶变换 小波变换 模糊逻辑 聚类分析 隶属函数 |
Design of the membership function of fuzzy logic PIO detector |
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| YAN Shi-wei,GAO Zheng-hong,LIU Yan,TIAN Fu-li.Design of the membership function of fuzzy logic PIO detector[J].Flight Dynamics,2011,29(5):5-9. |
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| Authors: | YAN Shi-wei GAO Zheng-hong LIU Yan TIAN Fu-li |
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| Institution: | YAN Shi-wei1,GAO Zheng-hong1,LIU Yan1,TIAN Fu-li2 (1.College of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China,2.Agency of Chief Engineer,Chinese Flight Test Establishment,Xi'an 710089,China) |
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| Abstract: | PIO detector is a kind of pattern-recognition method,which generally consists of data acquisition,data preprocessing,feature extraction and classifying decision.Using the short time Fourier transform(STFT) and wavelet transform to extract the features of PIO events.All these features show different between PIO and normal condition with quantum and quality.Then optimize the membership functions of fuzzy PIO detector with a fuzzy C-spherical shell clustering(FCSS) algorithm.This algorithm could cluster data s... |
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| Keywords: | STFT wavelet transform fuzzy logic clustering analysis membership function |
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