改进的双Sigmoid函数变步长自适应算法及在OCT中的应用
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摘要
为提高光学电流互感器(Optical Current Transducer,OCT)在低信噪比环境下的测量准确度和长期稳定性,该文从影响OCT性能关键因素之一的算法入手,在分析现有的变步长自适应算法的基础上,结合OCT输出信号的特征和OCT工作的环境,提出一种改进的双Sigmoid函数变步长自适应算法,并将这种算法与现有的变步长自适应算法进行了仿真对比分析以及利用Active X技术将该算法在OCT中进行了应用测试,证明了该算法在低信噪比环境下提高OCT的测量准确度和长期稳定性的优势.
In order to improve the measurement accuracy and long-term stability of OCT in low SNR( signal-noise ratio)environment, this paper starts from the algorithm that one of the key factors affects the performance of OCT. Basing on the analysis on existing variable step size adaptive algorithm, combining the characteristics of the output signal of OCT and the working circumstance of OCT,we proposed an improved double Sigmoid function variable step size adaptive algorithm,and compared this algorithm with the existing variable step size adaptive algorithm through simulation. Then, the algorithm is tested in OCT based on ActiveX. The results demonstrated the advantage of this algorithm in improving the measurement accuracy and long-term stability of OCT in low SNR environment.
In order to improve the measurement accuracy and long-term stability of OCT in low SNR( signal-noise ratio)environment, this paper starts from the algorithm that one of the key factors affects the performance of OCT. Basing on the analysis on existing variable step size adaptive algorithm, combining the characteristics of the output signal of OCT and the working circumstance of OCT,we proposed an improved double Sigmoid function variable step size adaptive algorithm,and compared this algorithm with the existing variable step size adaptive algorithm through simulation. Then, the algorithm is tested in OCT based on ActiveX. The results demonstrated the advantage of this algorithm in improving the measurement accuracy and long-term stability of OCT in low SNR environment.
引文
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[11]王慧武,丛超.一种基于Duffing系统的信号检测与参数估计新方法[J].电子学报,2016,44(6):1450-1457.WANG Hui-w u,CONG Chao. A new signal detection and estimation method by using duffing system[J]. Acta Electronica Sinica,2016,44(6):1450-1457.(in Chinese)
[12]吕广强,刘娱,段海军. APF中一种改进的变步长LMS自适应谐波检测算法[J].电力系统保护与控,2016,44(7):96-101.LV Guang-qiang,LIU Yu,DUAN Hai-jun. An improved variable step-size LM S adaptive harmonic detection algorithm for active pow er filters[J]. Pow er System Protection and Control,2016,44(7):96-101.(in Chinese)
[13]张兰勇,王帮民,刘胜,等.一种新的变步长自适应噪声消除算法[J].电子学报,2017,45(2):321-327.ZHANG Lan-yong,WANG Bang-min,LIU Sheng,et al.A novel variable step-size adaptive interference cancellation algorithm[J]. Acta Electronica Sinica,2017,45(2):321-327.(in Chinese)
[14]刘荣胜,彭敏放,肖祥慧.基于谱聚类集成的变压器在线故障检测[J].电子学报,2017,45(10):2491-2497.LIU Rong-sheng,PENG M in-fang,XIAO Xiang-hui. The transformer on-line fault diagnosis based on spectral clustering ensemble[J]. Acta Electronica Sinica,2017,45(10):2491-2497.(in Chinese)
[15] WANG Rui,ZHANG Zhi-jie,ZHAO Chen-yang,et al.M ixed programming w ith lab VIEW&M atlab and its application in explosion field test[J]. Journal of M easurement Science and Instrumentation,2016,7(1):13-17.
[2] HE Hong-peng,LIU Jun. Reserch on the improvement of OCT used in pow er system[J]. Applied M echanics and M aterials,2013,2601(385):995-998.
[3]王佳颖,郭志忠,张国庆,等.光学电流互感器长期运行稳定性的试验研究[J].电网技术,2012,36(6):37-41.WANG Jia-ying,GUO Zhi-zhong,ZHANG Guo-qing,et al. Experimental investigation on optical current transducer’s long-term operation stability[J]. Pow er System Technology,2012,36(6):37-41.(in Chinese)
[4] ABBAS Hussain,HUANG Hai. Weight size determined variable step size LM S method for identifying under damped systems[J]. Applied M echanics and M aterials,2014,3006(511):238-241.
[5]LIU Li,WANG Qiong,BAI Hong-ping. An improved variable step size LM S algorithm based on sigmoid function[J]. Applied Mechanicsand Materials,2014,3365(602):3593-3596.
[6]陈泳,田金鹏,刘燕平.一种新的变步长LMS自适应滤波算法[J].电子测量技术,2015,38(4):27-31.CHEN Yong,TIAN Jin-peng,LIU Yan-ping. New variable step size LM S adaptive filtering algorithm[J]. Electronic M easurement Technology,2015,38(4):27-31.(in Chinese)
[7]张红梅,韩万刚.一种新的变步长LMS自适应滤波算法研究及其应用[J].仪器仪表学报,2015,36(8):1822-1829.ZHANG Hong-mei,HAN Wan-gang. A new variable step LM S algorithm and its application[J]. Chinese Journal of Scientific Instrument,2015,36(8):1822-1829.(in Chinese)
[8]TIAN Fu-qing,LUO Rong. A nover variable step size LMS algorithm based on modified hyperbolic tangent and its simulation[J]. Advanced M aterials Research,2012,1700(490):1423-1430.
[9]靳翼,邵怀宗.一种新的变步长LMS自适应滤波算法及其仿真[J].信号处理,2010,26(9):1385-1388.JI Yi,SHAO Huai-zong,A novel variable step size LM S adaptive filter algorithm and its simulation[J]. Signal Processing,2010,26(9):1385-1388.(in Chinese)
[10]唐建锋,张登玉,罗湘南.一种基于多尺度小波的自适应滤波新算法[J].通信技术,2008,41(12):405-407.TANG Jian-feng,ZHANG Deng-yu,LUO Xiang-nan. A new adaptive filtering algorithm based on muti-scale w avelet transform[J]. Communications Technology,2008,41(12):405-407.(in Chinese)
[11]王慧武,丛超.一种基于Duffing系统的信号检测与参数估计新方法[J].电子学报,2016,44(6):1450-1457.WANG Hui-w u,CONG Chao. A new signal detection and estimation method by using duffing system[J]. Acta Electronica Sinica,2016,44(6):1450-1457.(in Chinese)
[12]吕广强,刘娱,段海军. APF中一种改进的变步长LMS自适应谐波检测算法[J].电力系统保护与控,2016,44(7):96-101.LV Guang-qiang,LIU Yu,DUAN Hai-jun. An improved variable step-size LM S adaptive harmonic detection algorithm for active pow er filters[J]. Pow er System Protection and Control,2016,44(7):96-101.(in Chinese)
[13]张兰勇,王帮民,刘胜,等.一种新的变步长自适应噪声消除算法[J].电子学报,2017,45(2):321-327.ZHANG Lan-yong,WANG Bang-min,LIU Sheng,et al.A novel variable step-size adaptive interference cancellation algorithm[J]. Acta Electronica Sinica,2017,45(2):321-327.(in Chinese)
[14]刘荣胜,彭敏放,肖祥慧.基于谱聚类集成的变压器在线故障检测[J].电子学报,2017,45(10):2491-2497.LIU Rong-sheng,PENG M in-fang,XIAO Xiang-hui. The transformer on-line fault diagnosis based on spectral clustering ensemble[J]. Acta Electronica Sinica,2017,45(10):2491-2497.(in Chinese)
[15] WANG Rui,ZHANG Zhi-jie,ZHAO Chen-yang,et al.M ixed programming w ith lab VIEW&M atlab and its application in explosion field test[J]. Journal of M easurement Science and Instrumentation,2016,7(1):13-17.