针对电动汽车单一电源电流冲击大的问题,构建了电容半主动拓扑的复合电源,并提出一种基于小波变换与遗传算法(genetic algorithm,GA)优化模糊控制的能量管理策略。利用Haar小波分解需求功率,以高频分量及储能元件荷电状态(state of char...针对电动汽车单一电源电流冲击大的问题,构建了电容半主动拓扑的复合电源,并提出一种基于小波变换与遗传算法(genetic algorithm,GA)优化模糊控制的能量管理策略。利用Haar小波分解需求功率,以高频分量及储能元件荷电状态(state of charge,SOC)为输入,通过GA优化隶属度函数参数实现功率精准分配。在新欧洲驾驶循环(new European driving cycle,NEDC)及中国轻型汽车行驶工况-乘用车(China light-duty vehicle test cycle-passenger car,CLTC-P)等工况下的仿真表明,相比单一电源策略,所提策略峰值电流平均降低约28.0%,均方根(root mean square,RMS)电流平均降低约21.0%,并将高电流区间占比压缩至6%以内,电池温升幅度降低34.8%和37.8%;在不同SOC条件下均表现出鲁棒性,对电流指标的优化幅度稳定保持在20%~28%区间,有效延长了电池循环寿命。展开更多
工业产品表面缺陷检测是保障最终产品质量一致性的关键环节。针对传统检测方法对小尺寸缺陷敏感度低、细长型缺陷定位不准等问题,本文提出一种基于改进YOLOv8(You Only Look Once Version 8)的工业产品表面缺陷检测方法。该方法嵌入ViT(...工业产品表面缺陷检测是保障最终产品质量一致性的关键环节。针对传统检测方法对小尺寸缺陷敏感度低、细长型缺陷定位不准等问题,本文提出一种基于改进YOLOv8(You Only Look Once Version 8)的工业产品表面缺陷检测方法。该方法嵌入ViT(Vision Transformer)模块,增强对微小缺陷的特征判别力,提高复杂背景干扰的鲁棒性。由于传统CIoU(Complete Intersection over Union)损失函数难以直接量化宽度/高度的绝对偏差,将其替换为形状感知损失函数。同时在公开数据集MVTec AD上验证该方法在工业产品缺陷检测中的有效性。实验结果表明,相比于基础YOLOv8网络,改进后的YOLOv8网络在精确度和平均精度均值上表现出优势,分别提升0.0195和0.0157。展开更多
Professor SHAO Jing-ming has obtained more significant effect during the clinical practice in treatment of wheezing diseases by adopting ＂three-acupoint and five-needling method＂ created by himself, and the effect h...Professor SHAO Jing-ming has obtained more significant effect during the clinical practice in treatment of wheezing diseases by adopting ＂three-acupoint and five-needling method＂ created by himself, and the effect has been widely recognized by doctors and patients. After decades of development, Shao＇s ＂three-acupoint and five-needling method＂ has become a therapy with complete theoretical system and a large number of clinical research achievements, and its application scope has been expanded. In this paper, the achievements of Shao＇s ＂three-acupoint and five-needling method＂ during clinical studies in the early, middle and current development stages and related problems were reviewed comprehensively.展开更多
文摘针对电动汽车单一电源电流冲击大的问题,构建了电容半主动拓扑的复合电源,并提出一种基于小波变换与遗传算法(genetic algorithm,GA)优化模糊控制的能量管理策略。利用Haar小波分解需求功率,以高频分量及储能元件荷电状态(state of charge,SOC)为输入,通过GA优化隶属度函数参数实现功率精准分配。在新欧洲驾驶循环(new European driving cycle,NEDC)及中国轻型汽车行驶工况-乘用车(China light-duty vehicle test cycle-passenger car,CLTC-P)等工况下的仿真表明,相比单一电源策略,所提策略峰值电流平均降低约28.0%,均方根(root mean square,RMS)电流平均降低约21.0%,并将高电流区间占比压缩至6%以内,电池温升幅度降低34.8%和37.8%;在不同SOC条件下均表现出鲁棒性,对电流指标的优化幅度稳定保持在20%~28%区间,有效延长了电池循环寿命。
文摘工业产品表面缺陷检测是保障最终产品质量一致性的关键环节。针对传统检测方法对小尺寸缺陷敏感度低、细长型缺陷定位不准等问题,本文提出一种基于改进YOLOv8(You Only Look Once Version 8)的工业产品表面缺陷检测方法。该方法嵌入ViT(Vision Transformer)模块,增强对微小缺陷的特征判别力,提高复杂背景干扰的鲁棒性。由于传统CIoU(Complete Intersection over Union)损失函数难以直接量化宽度/高度的绝对偏差,将其替换为形状感知损失函数。同时在公开数据集MVTec AD上验证该方法在工业产品缺陷检测中的有效性。实验结果表明,相比于基础YOLOv8网络,改进后的YOLOv8网络在精确度和平均精度均值上表现出优势,分别提升0.0195和0.0157。
基金Supported by The Workstation of Affiliated Hospital of Gansu University of Chinese Medicine,Henan Shao’s Acupuncture-Moxibustion School Studio:LP0116036-Z8
文摘Professor SHAO Jing-ming has obtained more significant effect during the clinical practice in treatment of wheezing diseases by adopting ＂three-acupoint and five-needling method＂ created by himself, and the effect has been widely recognized by doctors and patients. After decades of development, Shao＇s ＂three-acupoint and five-needling method＂ has become a therapy with complete theoretical system and a large number of clinical research achievements, and its application scope has been expanded. In this paper, the achievements of Shao＇s ＂three-acupoint and five-needling method＂ during clinical studies in the early, middle and current development stages and related problems were reviewed comprehensively.
