ZERO-CROSSING

作品数：13被引量：25H指数：2
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相关期刊：《Computer Modeling in Engineering & Sciences》《Chinese Physics B》《Chinese Physics Letters》《Earthquake Engineering and Engineering Vibration》更多>>
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Optimal zero-crossing group selection method of the absolute gravimeter based on improved auto-regressive moving average model
《Chinese Physics B》2023年第11期347-354,共8页牟宗磊 韩笑 胡若 
Project supported by the National Key R&D Program of China (Grant No. 2022YFF0607504)。
An absolute gravimeter is a precision instrument for measuring gravitational acceleration, which plays an important role in earthquake monitoring, crustal deformation, national defense construction, etc. The frequency...
关键词：absolute gravimeter laser interference fringe Fourier series fitting honey badger algorithm mul-tiplicative auto-regressive moving average(MARMA)model 
A User-Transformer Relation Identification Method Based on QPSO and Kernel Fuzzy Clustering被引量：1
《Computer Modeling in Engineering & Sciences》2021年第3期1293-1313,共21页Yong Xiao Xin Jin Jingfeng Yang Yanhua Shen Quansheng Guan 
supported by the National Natural Science Foundation of China(61671208).
User-transformer relations are significant to electric power marketing,power supply safety,and line loss calculations.To get accurate user-transformer relations,this paper proposes an identification method for user-tr...
关键词：User-transformer relation identification zero-crossing shift fuzzy C-means clustering quantum particle swarm optimization attractor multiple update strategy dynamic crossover strategy perturbation strategy of potential-well characteristic length 
Prosthetic Leg Locomotion-Mode Identification Based on High-Order Zero-Crossing Analysis Surface Electromyography被引量：2
《Journal of Shanghai Jiaotong university(Science)》2021年第1期84-92,共9页LIU Lei YANG Peng LIU Zuojun SONG Yinmao 
the Center Plain Science and Technology Innovation Talents(No.194200510016);the Science and Technology Innovation Team Project of Henan Province University(No.19IRTSTHN013);the Key Scien-tific Research Support Project for Institutions of Higher Learning in Henan Province(No.18A413014)。
The research purpose was to improve the accuracy in identifying the prosthetic leg locomotion mode.Surface electromyography(sEMG)combined with high-order zero-crossing was used to identify the prosthetic leg locomotio...
关键词：intelligent prosthesis surface electromyography(sEMG) relevance vector machine(RVM) high-order zero-crossing bat algorithm(BA) locomotion-mode identification 
Relative energy zero ratio-based approach for identifying pulse-like ground motions被引量：2
《Earthquake Engineering and Engineering Vibration》2020年第1期1-16,共16页Liu Ping Li Ning Ma Hua Xie Lili Zhou Baofeng 
Supported by:National Natural Science Foundation of China under Grant Nos.51378341,51427901 and 51678407;National Key Research and Development Program under Grant No.2016YFC0701108
Pulse-like ground motions are capable of inflicting significant damage to structures. Efficient classification of pulse-like ground motion is of great importance when performing the seismic assessment in near-fault re...
关键词：pulse-like ground motion velocity pulse relative energy zero-crossing ratio short-time input energy shorttime zero crossing rate 
Multidimensional zero-crossing interval points: a low sampling rate acoustic fingerprint recognition method被引量：1
《Science China(Information Sciences)》2019年第1期219-221,共3页Xianghu YUE Fang DENG Yue XU 
supported by National Natural Science Foundation of China (Grant Nos. 61304254, 61321002);Beijing NOVA Program (Grant No. xx2016B027)
Dear editor,In recent years,acoustic fingerprint,recognition technique has been widely utilized in areas such as battle environments,environmental monitoring,security systems,and personal identification[1],which plays...
关键词：MULTIDIMENSIONAL ZERO-CROSSING ACOUSTIC FINGERPRINT recognition method 
Precise calibration of zero-crossing temperature and drift of an ultralow expansion cavity with a clock transition spectrum被引量：1
《Chinese Physics B》2018年第5期150-154,共5页Hui Liu Kun-Liang Jiang Jin-Qi Wang Zhuan-Xian Xiong Ling-Xiang He Bao-Long Lu 
Project supported by the National Natural Science Foundation of China(Grant Nos.61227805,11574352,91536104,and 91636215);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB21030100)
We report a clock transition spectrum approach,which is used to calibrate the zero-crossing temperature and frequency drift of an ultralow expansion(ULE)cavity with a Hertz level resolution.With this approach,the line...
关键词：clock transition spectra ULE cavity frequency drift zero-crossing temperature 
Research on fast solid state DC breaker based on a natural current zero-crossing point被引量：10
《Journal of Modern Power Systems and Clean Energy》2014年第1期30-38,共9页Wang XIANG Yu HUA Jinyu WEN Meiqi YAO Naihu LI 
This work is supported by National Natural Science Foundation of China under the contract 51261130484;by State Grid Corporation of China under the contract State Grid Research 304(2013).
The DC fault characteristics of voltage source converter based high voltage direct current(VSC-HVDC)systems are analyzed in this paper.The phenomenon whereby the capacitor on DC side discharges quickly during a DC fau...
关键词：VSC-HVDC Multi-terminal HVDC DC short circuit fault DC breaker 
Performance Comparison of Three Algorithms Applied to UM2000 Signal Demodulation
《Journal of Signal and Information Processing》2013年第3期58-61,共4页Zhichao Qiao Fuping Wang 
UM2000 signal is a type of multi-audio frequency-modulated signal which is widely used for railway blocking. Principles of three typical demodulating algorithms are presented in details in this paper. Bit error rates ...
关键词：UM2000 SIGNAL DIFFERENTIAL Frequency DETECTION ZERO-CROSSING DETECTION QUADRATURE DEMODULATION 
Measurement of the Velocities of Nanoparticles in Flowing Nanofluids using the Zero-Crossing Laser Speckle Method
《Chinese Physics Letters》2012年第4期92-95,共4页AN Qin LU Jian NI Xiao-Wu 
Supported by the Natural Science Foundation of Jiangsu Province under Grant No BK2008409;the National Natural Science Foundation of China under Grant No 11174151.
A zero-crossing dynamic speckle method is proposed to determine the velocities of nanoparticles in nanofluids.A Gaussian laser beam is used to illuminate nanofluids in a pipe,and the dynamic speckles are detected by a...
关键词：NANOPARTICLES SPECKLE integrating 
A robust feature extraction approach based on an auditory model for classification of speech and expressiveness被引量：5
《Journal of Central South University》2012年第2期504-510,共7页孙颖 V.Werner 张雪英 
Project(61072087)supported by the National Natural Science Foundation of China;Project(2010011020-1)supported by the Natural Scientific Foundation of Shanxi Province,China;Project(20093010)supported by Graduate Innovation Fundation of Shanxi Province,China
Based on an auditory model, the zero-crossings with maximal Teager energy operator (ZCMT) feature extraction approach was described, and then applied to speech and emotion recognition. Three kinds of experiments were ...
关键词：speech recognition emotion recognition zero-crossings Teager energy operator speech database 
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