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Mine-Hoist Active Fault Tolerant Control System and Strategy

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Journal of China University of Mining and Technology 2005年第2期15卷 96-99页

作者： wangzhi-jie WANGYao-cai MENGJiang ZHAOPeng-cheng CHANGYan-wei SchoolofInformationandElectricalEngineering ChinaUniversityofMining＆TechnologyXuzhouJiangsu221008China

Based on fault diagnosis and fault tolerant technologies, the mine-hoist active fault-tolerant control system (MAFCS) is presented with corresponding strategies,, which includes the fault diagnosis module (FDM), the dynamic library (DL) and the fault-tolerant control module (FCM). When a fault is judged from some sensor by FDM, FCM reconfigure the state of MAFCS by calling the parameters from all sub libraries in DL, in order to ensure the reliabil- ity and safety of mine hoist. The simulating result shows that, MAFCS is of certain intelligence, which can adopt the corresponding control strategies according to different fault modes, even when there are quite difference between the real data and the prior fault modes.

关键词： mine hoist reliability fault diagnosis active fault-tolerant control system

Study on Nitrogen Distribution in Leaf, Stem and Sheathat Different Layers in Winter Wheat Canopyand Their Influence on Grain Quality

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Agricultural Sciences in China 2003年第8期2卷 859-866页

作者： wangzhi-jie WANGJi-hua HUANGWen-jiang MAZhi-hong ZHAOMing NationalEngineeringResearchCenterforInformationTechnologyinAgriculture Beijing100089P.R.China CollegeofCropScienceandBio-Technology ChinaAgriculturalUniversityBeijing100094P.R.China

Vertical distribution of nitrogen in wheat canopy, nitrogen remobilization and their influence on grain quality of winter wheat were studied. Two winter wheat cultivars, Jingdong8, a common cultivar, and Zhongyou9507, a high quality cultivar, were selected. Leaf nitrogen showed an obvious decreasing trend from the canopy top to the ground surface for all treatments in growth duration. There was no apparent vertical nitrogen gradient in stem and sheath of Zhongyou9507 compared with Jingdong8. Zhongyou9507 had more nitrogen remobilization from leaf, stem and sheath than Jingdong8 from middle grain filling to waxening, especially the nitrogen remobilization amount in stem and sheath, which was higher than that in Jingdong8 during growth duration. Higher vertical nitrogen gradients in Jingdong8 at anthesis had disadvantages on its grain quality. But higher vertical nitrogen gradients between middle and lower layers of Jingdong8 at grain filling stage enhanced its grain quality. Higher vertical nitrogen gradients in upper layer at anthesis and upper layer leaf and middle layer stem and sheath at grain filling stage had advantages on protein accumulation in grain of Zhongyou9507. There were positive correlations between foliar nitrogen remobilization amount and grain quality at later growth stage for the two cultivars. There was a positive correlation between quality of Jingdong8 and stem and sheath nitrogen remobilization amount from anthesis to early grain filling, and that of Zhongyou9507 emerged from anthesis to early grain filling and from middle grain filling to waxening. Contribution of leaf nitrogen to the quality of Jingdong8 was larger than nitrogen from stem and sheath. High protein content of Zhongyou9507 was attributed to the nitrogen condition in its leaf, stem and sheath. Nitrogen in stem and sheath played a more important role on the grain quality of Zhongyou9507 than on that of Jingdong8.

关键词： Winter wheat Nitrogen concentration Vertical gradients N remobilization amount Processing quality

Changes in Activities of the Key Enzymes Related to Starch Synthesis in Rice Grains During Grain Filling and Their Relationships with the Filling Rate and Cooking Quality

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Agricultural Sciences in China 2005年第1期4卷 26-33页

作者： ZHAOBu-hong ZHANGWen-jie wangzhi-qin ZHUQin-sen YANGJian-chang CollegeofAgriculture YangzhouUniversityYangzhou225009P.R.China

With 10 rice cultivars (lines) as materials, the changes in activities of adenosine diphosphoglucose pyrophosphorylase(ADPGPase), starch synthase (SSase) and starch branching enzyme (Q-enzyme) in the grains during grain filling, and theirrelationships with the filling rate, gel consistency (GC), alkali spreading value (ASV) and amylose content (AC) werestudied. The results showed that changes in activities of ADPGPase, SSase and Q-enzyme exhibited a single peak duringgrain filling, and the time of the activity peaks for the former two enzymes was earlier than that of the maximum grain-fillingrate (Tmax), and the time reaching the peak for Q-enzyme was synchronous with Tmax. The activities at early grain fillingstage, and the mean and maximum activities of each enzyme during grain filling period were positively and significantly orvery significantly correlated with the mean and maximum grain filling rate and starch content (mg grain-1) in the *** of ADPGPase at all grain filling stages and those of Q-enzyme at the early and mid filling stages were notsignificantly correlated the cooking quality (GC, ASV and AC). SSase activities at the early filling stage were significantlyand negatively correlated with GC and ASV, and positively correlated with AC. Activities of SSase at mid and late grainfilling stages and Q-enzyme at the late filling stage were significantly and positively correlated with GC and ASV, andnegatively correlated with AC. Spraying zeatin or abscisic acid at early grain filling stage could obviously regulate theactivities of ADPGPase, SSase and Q-enzyme in the grains.

关键词： Rice ADPGPase Starch synthase Q-enzyme Grain filling rate Cooking quality

Inversion of Biochemical Parameters by Selection of Proper Vegetation Index in Winter Wheat

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Agricultural Sciences in China 2004年第3期3卷 178-185页

作者： HUANGWen-jiang WANGJi-hua LIULiang-yun ZHAOChun-jiang wangzhi-jie WANGJin-di ResearchCenterforRemoteSensingandGIS SchoolofGeographyBeijingNormalUniversityBeijing100875P.R.China NationalEngineeringResearchCenterforInformationTechnologyinAgriculture Beijing100089P.R.China

Recent studies have demonstrated the application of vegetation indices from canopy reflectedspectrum for inversion of chlorophyll concentration. Some indices are both response tovariations of vegetation and environmental factors. Canopy chlorophyll concentration, anindicator of photosynthesis activity, is related to nitrogen concentration in green vegetationand serves as an indicator of the crop response to soil nitrogen fertilizer application. Thecombination of normalized difference vegetation index (NDVI) and photochemical reflectanceindex (PRI) can reduce the effect of leaf area index (LAI) and soil background. The canopychlorophyll inversion index (CCII) was proved to be sensitive to chlorophyll concentration andvery resistant to the other variations. This paper introduced the ratio of TCARI/OSAVI to makeaccurate predictions of winter wheat chlorophyll concentration under different cultivars. Itindicated that canopy chlorophyll concentration could be evaluated by some combined vegetationindices.

关键词： Winter wheat,Canopy reflected spectrum,Structure Insensitive Vegetation Index Chlorophyll concentration

Cultivar,Nitrogen and Irrigation Influence on Grain Quality and Its Forecasting Methods by In situ Reflected Spectrum of Winter Wheat

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Agricultural Sciences in China 2004年第11期3卷 831-841页

作者： HUANGWen-jiang WANGJi-hua LIULiang-yun wangzhi-jie TANChang-wei SONGXiao-yu WANGJing-di NationalEngineeringResearchCenterforInformationTechnologyinAgriculture P.O.Box2449-26Beijing100089P.R.China ResearchCenterforRemoteSensingandGIS SchoolofGeographyBeijingNormalUniversityBeijing100875P.R.China

Field experiments were conducted to examine the influence factors of cultivar, nitrogen application and irrigation on grain protein content, gluten content and grain hardness in three winter wheat cultivars under four levels of nitrogen and irrigation treatments. Firstly, the influence of cultivars and environment factors on grain quality were studied, the effective factors were cultivars, irrigation, fertilization, etc. Secondly, total nitrogen content around winter wheat anthesis stage was proved to be significantly correlative with grain protein content, and spectral vegetation index significantly correlated to total nitrogen content around anthesis stage were the potential indicators for grain protein content. Accumulation of total nitrogen content and its transfer to grain is the physical link to produce the final grain protein, and total nitrogen content at anthesis stage was proved to be an indicator of final grain protein content. The selected normalized photochemical reflectance index (NPRI) was proved to be able to predict grain protein content on the close correlation between the ratio of total carotenoid to chlorophyll a and total nitrogen content. The method contributes towards developing optimal procedures for predicting wheat grain quality through analysis of their canopy reflected spectrum at anthesis stage. Regression equations were established to forecast grain protein and dry gluten content by total nitrogen content at anthesis stage, so it is feasible for forecasting grain quality by establishing correlation equations between biochemical constitutes and canopy reflected spectrum.

关键词： Winter wheat Canopy reflected spectrum Normalized photochemical reflectance index (NPRI) Grain quality indicators Forecasting

Cloning, Expression of Crocus sativus Phytoene Desaturase Gene and Preparation of Antiserum against It

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Wuhan University Journal of Natural Sciences 2004年第2期9卷 252-258页

作者： Baijie MiaoChen XuYing TangLin wangzhi-tao ChenFang CollegeofLifeSciences SichuanUniversityChengdu610064SiehuanChina

A 2 149 bp full length phytoene desaturase (PDS) cDNA was first cloned from saffron (Crocus sativus L.) stigma using RT-PCR technique and a rapid amplification of cDNA end (RACE) strategy. The cDNA has an open reading frame of 1 697 bp, which encodes a polypeptide of 565 amino acids. The coding region of the cDNA was inserted into a prokaryotic expression vector pET-21a(+) and over-expressed inE. coli BL21 (DE3). The fusion proteins were found largely in an insoluble inclusion bodies. The purified fusion protein was used to immunize rabbits to obtain polyclonal antiserum with titer of 1×105. Western blot analysis by using this particular antiserum showed that the higher expression level of PDS in mature stigma than in leaves and stamen, and the higher expression level of PDS in mature stigma than in young stigma. Key words saffron - carotenoids - phytoene desaturase - gene expression - antiserum - Western blot CLC number Q 781 - Q 786 Foundation item: Supported by the Doctoral Foundation of the Ministry of Education, P. R. China and the Young Science Foundation of Sichuan University (Grant 0020405505012)Biography: Bai jie (1968-), female, Ph. D candidate, research direction: plant developmental biology and reproductive engineering.

关键词： saffron carotenoids phytoene desaturase gene expression antiserum Western blot

Discussion on Abnormal Corrosion and Material Selection of Hot Iron Ladles with Steel Scrap Addition

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China's Refractories 2023年第1期32卷 1-5页

作者： XU Guotao ZHAO Yuan WU jie ZHANG Honglei LIU Li ZHANG Yanwen ZHOU wangzhi Baosteel Central Research Institute Wuhan 430080China Manufacturing Department of Wuhan Iron and Steel Company Limited Wuhan 430080China Technical Center of Wuhan Iron and Steel Company Limited Wuhan 430080China

The abnormal corrosion of hot iron ladles was *** performance,the composition and the structure of bricks for hot iron ladles were *** results show that(1)compared with the alumina-silicon carbide-carbon bricks for the ladle bottom,those for the ladle wall have more pyrophyllite and the Al2O3 content of 36.32 mass%;their bulk density,apparent porosity and cold compressive strength are lower than the requirement of industry standard;they have poor anti-oxidation performance and are oxidized to form a porous layer during service,which loosens the brick lining structure thus leading to fracture,local wear and structural damage of bricks;(2)without preheating,steel scraps are not completely melted,resulting in slag or steel attachment at the mouth or the bottom of ladles thus increasing damage of ladles;(3)and the residual bricks react with the attached slag to form low melting point phases affecting their hot *** refractories for the lining of hot iron ladles must be improved in combination with process changes,not entirely by raw materials replacement to reduce costs.

关键词： steel scraps hot iron ladles refractories alumina-silicon carbide-carbon bricksot

基于SSWD优化LMD的高速电梯滚动导靴振动信号特征提取

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振动与冲击 2021年第10期40卷 196-203页

作者：陶然许有才和杰鲁云波乔王治杨春宇张俊喃李珺王华昆明理工大学质量发展研究院昆明650500 云南省特种设备安全检测研究院昆明650228 云南惠民劳务服务有限公司昆明650228

针对奇异值分解(SVD)优化局部均值分解(LMD)方法提取高速电梯滚动导靴振动信号故障特征分量的模态混淆现象,提出一种基于自适应增强小波分解(SSWD)优化LMD的高速电梯滚动导靴振动信号特征提取方法。该方法构建低通滤波器、高通滤波器、... 详细信息

针对奇异值分解(SVD)优化局部均值分解(LMD)方法提取高速电梯滚动导靴振动信号故障特征分量的模态混淆现象,提出一种基于自适应增强小波分解(SSWD)优化LMD的高速电梯滚动导靴振动信号特征提取方法。该方法构建低通滤波器、高通滤波器、小波基函数、尺度函数,利用小波分解(WD)的多分辨率滤波特性将原始信号分解为高频细节特征信号和低频近似信号;对高频细节特征信号进行信号增强、将增强后的高频细节特征信号与低频近似信号进行重构;采用LMD从重构信号中提取能够表征滚动导靴故障特征PF分量,求取PF分量的瞬时Teager能量波形进行对比分析。通过对实际工况信号处理、分析,实验结果表明,相比于SVD优化LMD方法,该方法完整地提取了滚动导靴振动信号的故障特征分量,避免了模态混淆现象出现。

关键词：高速电梯滚动导靴局部均值分解(LMD) 自适应增强小波分解(SSWD) 小波分解(WD)

加废钢条件下铁水包的异常侵蚀与用材问题探讨

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耐火材料 2022年第1期56卷 56-60页

作者：徐国涛赵元吴杰张洪雷刘黎张彦文周旺枝宝钢股份中央研究院湖北武汉430080 武汉钢铁有限公司湖北武汉430080

对铁水包的异常侵蚀进行了调研,对铁水包用砖的性能、组成与结构进行分析。结果表明:1)铁水包包壁采用的铝碳化硅碳砖与包底用铝碳化硅碳砖不同,含较多的叶蜡石,Al_(2)O_(3)含量只有36.32%(w);体积密度、显气孔率、耐压强度均低于行业... 详细信息

对铁水包的异常侵蚀进行了调研,对铁水包用砖的性能、组成与结构进行分析。结果表明:1)铁水包包壁采用的铝碳化硅碳砖与包底用铝碳化硅碳砖不同,含较多的叶蜡石,Al_(2)O_(3)含量只有36.32%(w);体积密度、显气孔率、耐压强度均低于行业标准的要求;其抗氧化性差,使用过程中氧化形成多孔层,造成砖衬结构疏松,引起断砖、局部磨损及结构破坏;2)在废钢没有加热条件下,废钢熔化不彻底,造成包口、包底黏钢,黏渣,加剧了铁水包的破损;3)残砖与附渣反应形成低熔点物质,影响其高温性能。铁水包衬的耐火材料必须结合工艺条件的变化加以改进,而不完全是靠原料替代来降低成本。

关键词：废钢铁水包耐火材料铝碳化硅碳砖