Results 41 to 50 of about 480 (135)
Shelf Life Identification and Quality Analysis of Golden Delicious Apples Based on Hyperspectral Imaging and Near Infrared Spectroscopy [PDF]
In order to achieve non-destructive analysis of shelf life, soluble solid content (SSC) and pH of Golden Delicious apples, the spectral information of six different shelf life (postharvest 0, 7, 14, 21, 28 and 35 d) of apple was collected by ...
Han CHEN +5 more
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Optimization for Raman Fiber Amplifiers Based on Least Squares Support Vector Regression Model [PDF]
, 2015 在现有拉曼光纤放大器优化设计中,对拉曼散射耦合模型的求解是制约各种优化算法求解效率的瓶颈。提出运用最小二乘支持向量回归机,建立多抽运拉曼光纤放大器的输入输出回归模型,并利用该模型直接替代对拉曼散射耦合模型的求解,实现了优化速率数量级的提升。采用该方法对C波段的多波长反向抽运拉曼光纤放大器进行了优化实验,仅使用2个抽运源就可以迅速得到增益波动小于±0.5 d b的优化设计,并且其平均开关增益可以直接使用该模型进行快速调节。实验结果表明,相比传统的打靶法和平均功率法 ...
刘暾东, 孙巧, 江灏, 陈静
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Zhendong Ceshi yu Zhenduan针对螺杆转子铣削加工过程中的颤振问题，提出了一种基于RelifF算法优化最小二乘支持向量机（RelifF‑least square support vector machine， 简称RF‑LSSVM）的颤振监测方法。首先，使用变分模态分解（variational modal decomposition， 简称VMD）和RelifF算法对螺杆转子铣削过程中的振动信号进行分解、特征提取与选择；其次，利用增强鲸鱼算法（enhanced whale optimization algorithm， 简称E ...
doaj +1 more source
Dianci bileiqi, 2019 电气化铁路绝缘子智能冲洗的关键在于绝缘子跟踪、定位,通过对现有冲洗研究的分析,提出一种基于最小二乘支持向量机（LS-SVM）和Q（λ）学习的铁路绝缘子水冲洗定位方法。将水炮连续动作空间下的冲洗行为离散化,针对连续状态空间下Q（λ）学习可能面临维数灾难等问题,利用LS-SVM对Q值进行在线估计,为节省估计时间,训练样本采用滚动时间窗机制进行整体更新。Matlab仿真结果表明:该方法可将绝缘子定位时间缩短为0. 006 s,能够达到工程识别要求。
王国志 +4 more
doaj
Spatial Load Forecasting Method Based on Multiscale LDTW and TCN [PDF]
Spatial Load Forecasting(SLF) provides necessary guidance for the rational construction and use of substations and feeders, and it has become an indispensable aspect of distribution network planning.
Yue MA, Mi WEN
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Photovoltaic Output Prediction Based on Improved Long Short-Term Memory Network Using White Shark Optimization Algorithm [PDF]
ObjectivesIn order to ensure the safety, stability, and economic operation of the power system after photovoltaic integration, a photovoltaic power prediction model based on improved long short-term memory (LSTM) network using white shark optimization ...
LI Lanqing +5 more
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Kalman filter algorithm for short-term jam traffic prediction based on traffic parameter correlation [PDF]
, 2014 A Kalman filter model considering the correlation property of traffic flow parameters is proposed to realize network short-term traffic flow prediction under jam traffic.
Dong, Chunjiao +4 more
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Zhongguo youzhi为满足工业化生产过程中对植物油基多元醇性能的在线快速检测，以环氧大豆油为原料，合成了57个不同羟基含量的植物油基多元醇〔羟基值（KOH）94.1~229.4 mg/g、环氧值0~3.68%、聚合羟基值（KOH）85.1~207.5 mg/g〕，采用傅里叶红外光谱（FTIR）仪对样品进行扫描，以43个样品作为建模集，14个样品作为验证集，建立基于FTIR的不同植物油基多元醇的羟基值、环氧值和聚合羟基值的定量模型。考察了归一化、二阶导数、标准正态变量变换、多元散射校正、正交散射校正（OSC ...
李文龙1，叶子寒2，王琰1，孙悦文1，毕艳兰1，彭丹1，李军1LI Wenlong1, YE Zihan2, WANG Yan1, SUN Yuewen1, BI Yanlan1, PENG Dan1, LI Jun1
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A Novel Distributed Photovoltaic Output Interval Prediction Method [PDF]
ObjectivesDistributed photovoltaic power prediction is of great significance for the operation and scheduling of photovoltaic power plants. Point prediction methods are difficult to comprehensively describe the uncertainty of distributed photovoltaic ...
CHEN Jin +7 more
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