搜索结果: 1-4 共查到“动力与电气工程 PCA”相关记录4条 . 查询时间(0.109 秒)
为避免锅炉燃烧系统智能算法建模中特征变量维度过大造成的模型复杂以及过拟合问题,基于PCA提取主成分,利用PSO算法优化模型参数,建立了PCA-PSO-LSSVM锅炉效率预测模型。研究结果表明:PCA-PSO-LSSVM模型的预测精度更高,泛化能力更强,其中误差最大的锅炉效率模型测试集数据的平均相对误差仅0.002 49%,均方误差为0.004 51;未经过PCA提取主成分的PSO-LSSVM模型测...
DETECTION OF SHIP TARGETS IN POLARIMETRIC SAR DATA USING 2D-PCA DATA FUSION
Polarimetric data fusion 2D-PCA
2015/5/7
Data fusion has lately received a lot of attention as an effective technique for several target detection and classification applications in different remote sensing areas. In this work, a novel dat...
电液伺服阀作为液压伺服系统的核心部件，其性能好坏将直接影响整个液压系统的稳定性和控制精度。具体分析了某型双喷嘴挡板型电液伺服阀的工作原理，建立了液压仿真模型。通过调整模型参数进行故障模拟，进而获取故障数据。最后分别采用支持向量机(SVM)、主元分析法支持向量机(PCA-SVM)和小波包能量特征向量支持向量机(WPEE-SVM)进行故障分类。综合比较分类精度和速度表明，PCA-SVM是最佳诊断算...
PCA based protection algorithm for transformer internal faults
Protection internal faults transformers
2009/7/28
In this paper a new protection scheme is introduced to detect and identify transformer winding faults.
The new approach is based on artificial neural networks (ANNs) using radial basis functions (RBF...