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高温环形退火炉内罩压力控制研究

电工钢 2024年第2期6卷 41-43页

作者：郑韩超郝晓鹏肖辉明杨海生王承刚王旭马松新首钢智新电磁材料(迁安)股份有限公司河北迁安064400

详述了硅钢高温环形退火炉旋转周期内及旋转前后内罩压力控制系统工作原理。根据操作人员在实际生产过程中的操作经验和生产中遇到的一些实际情况进行分析,对现场操作遇到的问题进行梳理,并制定内罩压力预检测控制法和操作规范,实现高... 详细信息

详述了硅钢高温环形退火炉旋转周期内及旋转前后内罩压力控制系统工作原理。根据操作人员在实际生产过程中的操作经验和生产中遇到的一些实际情况进行分析,对现场操作遇到的问题进行梳理,并制定内罩压力预检测控制法和操作规范,实现高温环形退火炉内罩压力全自动预警技术,有效提高了内罩压力合格率。

关键词：取向硅钢高温环形退火炉内罩压力控制

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基于多元统计分析对芥菜营养品质的综合评价

中国蔬菜 2024年第1期 29-37页

作者：李建忠戴昀叶鑫雨李国亮章时蕃李菲张慧袁凌云陈国户汪承刚张淑江中国农业科学院蔬菜花卉研究所蔬菜生物育种全国重点实验室北京100081 安徽农业大学园艺学院安徽省园艺作物育种工程实验室安徽合肥230036

为建立芥菜营养品质标准评价体系,筛选优良品质的芥菜品种,采用多元统计分析方法(相关性分析、主成分分析、模糊数学隶属函数分析、聚类分析),对14份芥菜材料的干物质、VC、粗蛋白、粗纤维、葡萄糖、果糖、草酸、苹果酸、柠檬酸9个品质... 详细信息

为建立芥菜营养品质标准评价体系,筛选优良品质的芥菜品种,采用多元统计分析方法(相关性分析、主成分分析、模糊数学隶属函数分析、聚类分析),对14份芥菜材料的干物质、VC、粗蛋白、粗纤维、葡萄糖、果糖、草酸、苹果酸、柠檬酸9个品质指标进行综合评价。结果表明:14份芥菜材料的9个品质指标均存在显著差异,变异系数在16.46%~66.67%之间,说明不同芥菜材料单一指标间的差异较大。主成分分析综合品质得分较高的是1917012、1917396、1917381,较低的是1917351、祥瑞182;通过模糊数学隶属函数分析和聚类分析评价,营养品质优良的芥菜材料为1917396、1917397、1917381,较差的为1917152、祥瑞182。综合来看,芥菜材料1917396和1917381表现优异,营养品质好。这2份材料的干物质、VC等含量较高,也证明该评价体系可以极大的消除单一指标的差异。

关键词：芥菜营养品质多元统计分析综合评价

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Optimizing evasive maneuvering of planes using a flight quality driven model

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Science China(Information Sciences) 2024年第3期67卷 197-208页

作者： Chang LIU Shaoshan SUN chenggang TAO Yingxin SHOU Bin XU School of Automation Northwestern Polytechnical University Chengdu Aircraft Design & Research Institute of AVIC

This paper investigates the optimal evasive maneuver for a plane to avoid an incoming missile. To accurately model the system dynamics while improving computational efficiency, a simplified plane model based on flight quality is established. A missile model with proportional guidance is also *** problem of determining the optimal evasion plane maneuver is formulated. The Gauss pseudospectral method(GPM) is proposed as a solution to find the optimal maneuver. The optimized maneuver is validated by testing it on a high-fidelity 6-degree-of-freedom(6-DOF) model, which demonstrates the effectiveness of the proposed simplified plane model. The Monte Carlo method is employed to evaluate the capability of the plane to evade missiles in various scenarios and elucidate general principles for successful evasion.

关键词： optimal maneuver flying quality evasive strategy pursuit-evasion game air-to-air combat

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Measuring boundary-layer height under clear and cloudy conditions using three instruments

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Particuology 2016年第5期14卷 15-21页

作者： chenggang wang Hongrong Shi Lianji Jin Hongbin Chen Huayang Wen Key LaboratoryforAerosol-Cloud-Predpitation China MeteorologicalAdministratz'on Nanjing University of Information Science and Technology Nanjing210044 China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing100029 China University of Chinese Academy of Sciences Beijing 100049 China Anhui Meteorological Information Center Hefei 230061 China

Boundary-layer height （BLH） under clear, altostratus and low stratus cloud conditions were measured by GPS sounding, wind profiler radar, and micro-pulse lidar during the atmospheric radiation measurement experiment from Sep. to Dec. 2008 in Shouxian, Anhui, China. Results showed that during daytime or nighttime, regardless of cloud conditions, the GPS sounding was the most accurate method for measuring BLH. Unfortunately, because of the long time gap between launchings, sounding data did not capture the diurnal evolution of the BLH. Thus, wind profile radar emerged as a promising instrument for direct and continuous measurement of the mixing height during the daytime, accurately determining BLH using the structure parameter of the electromagnetic refractive index. However, during nighttime, radar was limited by weak signal extraction and did not work well for determining the BLH of the stable boundary layer, often recording the BLH of the residual layer. While micro-pulse lidar recorded the evolution of BLH, it overestimated the BLH of the stable boundary layer. This method also failed to work under cloudy conditions because of the influence of water vapor. Future work needs to develop a method to determine BLH that combines the complimentary features of all three algorithms.

关键词： Boundary-layer height Atmospheric radiation measurement experiment GPS sounding Wind profile radar Micro-pulse lidar

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环形退火炉旋转期间炉内热量损失研究

冶金设备 2024年第3期 30-33页

作者：刘良郝晓鹏刘传鹏李亮亮赵松山王承刚首钢智新迁安电磁材料有限公司河北迁安064404

研究环形退火炉在旋转期间炉内热量损失的原因,以及相应的改进措施。根据台车旋转的动作特性,从优化低焰燃烧参数及台车旋转时序两个方面来降低旋转期间的热量损失。改进后燃烧环路基本同时进入低焰燃烧状态,附属设备动作占用时间降低,... 详细信息

研究环形退火炉在旋转期间炉内热量损失的原因,以及相应的改进措施。根据台车旋转的动作特性,从优化低焰燃烧参数及台车旋转时序两个方面来降低旋转期间的热量损失。改进后燃烧环路基本同时进入低焰燃烧状态,附属设备动作占用时间降低,旋转期间低焰燃烧的持续时间大幅降低。降低低焰燃烧的持续时间可以有效地减少旋转期间炉内的热量损失,为炉况的稳定运行发挥重要作用。

关键词：环形退火炉旋转热量损失

ControlService: a containerized solution for control-algorithm-as-a-service in cloud control systems

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Science China(Information Sciences) 2024年第8期67卷 172-189页

作者： chenggang SHAN Runze GAO Zhen YANG Wei ZHANG Yuanqing XIA School of Artificial Intelligence Zaozhuang University School of Automation Beijing Institute of Technology

As an extension of networked control systems, cloud control systems(CCSs) have emerged as a new control paradigm to improve the service quality of emerging control missions, such as data-driven modeling and automated vehicles. Existing studies have used the workflow-based restructured method to optimize the computation-intensive algorithms in the CCSs. However, the challenges here are how to define and submit these algorithms' workflows as cloud services and execute these algorithms' workflows in a containerized manner. Based on these challenges, we propose a containerized solution for the control-algorithm-as-a-service(C3aS) in the CCSs, namely Control Service. It offers the control algorithm as a cloud workflow service and uses a customized workflow engine to realize the containerized execution. First, we employ a cloud workflow representation method to define a control algorithm into an abstract cloud workflow form. Afterward, we provide a cloud service representation of the abstract cloud workflow. Next, we design a workflow engine and submit the cloud service to this workflow engine to implement containerized execution of this cloud service in the CCSs. In the experiment, we discuss the cloud service form and containerized implementation of the subspace identification method. Experimental results show that the proposed Control Service has significant performance advantages in computational time, reduction percentage, and speedup ratio compared with the baseline method.

关键词： cloud control systems control-algorithm-as-a-service containerization workflow engine cloud workflow service subspace identification

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Nickel/cobalt based materials for supercapacitors

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Chinese Chemical Letters 2018年第12期29卷 1731-1740页

作者： chenggang wang Pengxiao Sun Guangmeng Qu Jiangmei Yin Xijin Xu School of Physics and Technology University of Jinan

The electrode materials as the key component of supercapacitors have attracted considerable research interests, especially for nickel/cobalt based materials by virtue of their superior electrochemical performance with multiple oxidation states for richer redox reactions, abundant natural resources, lower prices and toxicity. There are many advanced electrodes based on the nickel/cobalt materials exploited for the application of supercapacitors, however, some controversial statements have induced some confusion. Herein, we refine the mechanism of energy storage for the nickel/cobalt based materials for supercapacitors and reclassify them into battery-type materials with the corresponding devices named as hybrid supercapacitors.

关键词： Nickel/cobalt based materials Battery-type materials Pseudocapacitors EDLCs Hybrid supercapacitors

Turbulent Convective Heat Transfer of Methane at Supercritical Pressure in a Helical Coiled Tube

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Journal of Thermal Science 2018年第1期27卷 55-63页

作者： wang chenggang SUN Baokun LIN Wei HE Fan YOU Yingqiang YU Jiuyang Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety School of Mechanical and Electrical Engineering Wuhan Institute of Technology

The heat transfer of methane at supercritical pressure in a helically coiled tube was numerically investigated using the Reynolds Stress Model under constant wall temperature. The effects of mass flux(G), inlet pressure(P_(in)) and buoyancy force on the heat transfer behaviors were discussed in detail. Results show that the light fluid with higher temperature appears near the inner wall of the helically coiled tube. When the bulk temperature is less than or approach to the pseudocritical temperature(T_(pc)), the combined effects of buoyancy force and centrifugal force make heavy fluid with lower temperature appear near the outer-right of the helically coiled tube. Beyond the T_(pc), the heavy fluid with lower temperature moves from the outer-right region to the outer region owing to the centrifugal force. The buoyancy force caused by density variation, which can be characterized by Gr/Re^2 and Gr/Re^2.7, enhances the heat transfer coefficient(h) when the bulk temperature is less than or near the T_(pc), and the h experiences oscillation due to the buoyancy force. The oscillation is reduced progressively with the increase of G. Moreover, h reaches its peak value near the T_(pc). Higher G could improve the heat transfer performance in the whole temperature range. The peak value of h depends on P_(in). A new correlation was proposed for methane at supercritical pressure convective heat transfer in the helical tube, which shows a good agreement with the present simulated results.

关键词：压力模型螺旋状热转移试管甲烷对流温度范围入口压力

MiR-182 is up-regulated and targeting Cebpa in hepatocellular carcinoma

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Chinese Journal of Cancer Research 2014年第1期26卷 17-29页

作者： chenggang wang Ren Ren Haolin Hu Changjun Tan Miao Han Xiaolin wang Yun Zheng Department of Interventional Radiology Zhongshan HospitalFudan University Shanghai Institute of Medical Imaging State Key Laboratory of Genetic Engineering and Institute of Developmental Biology and Molecular Medicine School of Life Sciences Fudan University Liver Cancer Institude Fudan University Faculty of Life Science and Technology Kunming University of Science and Technology

MicroRNAs （miRNAs） are endogenous small non-coding RNAs that repress their targets at post transcriptional *** studies have shown that miRNAs are important regulatory genes in hepatocellular carcinoma （HCC）,as either tumor suppressors or ***-122 is normally downregulated in HCC and regarded as a tumor *** miR-122 has been reported to be regulated by CEBPA,which is then involved in a novel pathway to influence proliferation of tumor *** it is unknown whether CEBPA is regulated by miRNAs in *** this study,we find that miR182 is upregulated in HCC model rat,and represses CEBPA in both rat and *** further improves the current CEBPA/miR-122 pathway that controls the proliferation of tumor *** results suggest that miR-182 is a potential oncogene in HCC and could be used as a diagnostic marker and drug target of HCC.

关键词： miR-182 Cebpa miR-122 hepatocellular carcinoma (HCC) oncogene