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Aeroengine thrust estimation and embedded verification based on improved temporal convolutional network

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Chinese Journal of Aeronautics 2024年第1期37卷 106-117页

作者： Wanzhi MENG Zhuorui pan Sixin WEN pan QIN Ximing SUN Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of TechnologyDalian 116024China School of Control Science and Engineering Dalian University of TechnologyDalian 116024China

Thrust estimation is a significant part of aeroengine thrust control *** traditional estimation methods are either low in accuracy or large in *** further improve the estimation effect,a thrust estimator based on Multi-layer Residual Temporal Convolutional Network(M-RTCN)is *** solve the problem of dead Rectified Linear Unit(ReLU),the proposed method uses the Gaussian Error Linear Unit(GELU)activation function instead of ReLU in residual *** the overall architecture of the multi-layer convolutional network is adjusted by using residual connections,so that the network thrust estimation effect and memory consumption are further ***,the comparison with seven other methods shows that the proposed method has the advantages of higher estimation accuracy and faster convergence ***,six neural network models are deployed in the embedded controller of the micro-turbojet *** Hardware-in-the-Loop(HIL)testing results demonstrate the superiority of M-RTCN in terms of estimation accuracy,memory occupation and running ***,an ignition verification is conducted to confirm the expected thrust estimation and real-time performance.

关键词： Thrust estimation Temporal convolutional network Embedded deployment Hardware-in-the-loop testing Ignition verification

A Sheath Blight Resistance QTL qSB-11LE Encodes a Receptor Like Protein Involved in Rice Early Immune Response to Rhizoctonia solani

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A Sheath Blight Resistance QTL qSB-11LE Encodes a Receptor L...

中国植物病理学会2017年学术年会

作者： Xue Xiang Wang Yu Feng Zhiming Zhang Huimin Shan Wenfeng Cao Wenlei Zhang Yafang Chen Zongxiang pan xuebiao Zuo Shimin Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University

Sheath blight(SB) is one of the three most serious diseases,which leads to severe grain loss *** resistance to SB disease is a typical of quantitative trait controlled by polygenes or quantitative trait loci(QTLs).Lots of QTLs for SB resistance have been reported while none of them was isolated so far,which significantly hinders the elucidation of resistant ***,we have mapped an SB resistance QTL on chromosome 11 into a 78 kb region,in which the resistant allele(here after called qSB-11) is from Lemont(LE).Here,through a series of experiments like RNA interference,overexpression and complementation tests,we confirmed that a receptor-like protein lack of intracellular domain in the fine mapping region is ***-PCR data showed that qSB-lltranscription was significantly induced by SB pathogen Rhizoctonia solani but not by rice blight pathogen *** qSB-11is highly expressed in leaf sheath at the booting *** localization assay indicated that qSB-11protein localizes in both nucleus and *** the treatments of known pathogen associated molecular patterns(PAMPs),chitin and fig22,we found that knock down of qSB-11significantly affected rice innate immune response to *** known receptor/co-receptor like kinase proteins were found no interaction with qSB-11protein in *** the infection of SB fungus,the synthesis of hormone ethylene(ET) was apparently induced in wild plants,while it was only weakly increased in qSB-11RNAi plants as well as in susceptible near isogenic line(NIL).Spray of ET was able to recover the resistance phenotype of qSB-11 RNAi and NIL ***,we conclude that qSB-11is involved in rice early immune response to SB fungus and regulates ET synthesis upon SB pathogen infection to activate ET-dependent defense response.

关键词： Rice sheath blight QTL qSB-11LE Receptor like protein Early immune response Ethylene

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作物残茬与生物篱组合对减轻土壤风蚀的作用

农业工程学报 2009年第8期25卷 231-235页

作者：赵沛义李焕春妥德宝潘学标闫伟段玉内蒙古农业大学林学院呼和浩特010018 农业部农牧交错带生态环境重点野外科学观测试验站内蒙古旱作农业重点实验室内蒙古农牧业科学院植物营养与分析研究所呼和浩特010031 中国农业大学资源与环境学院北京100094

为了探究中国北方农牧交错带冬春风蚀季节生物篱与作物残茬组合对间作裸露秋翻地的防护作用,采用风蚀圈和野外移动式风洞试验的方法对研究区土壤风蚀情况进行监测,利用PC-3型自动气象站进行风速测定。结果表明,油葵秆生物篱减小了间作... 详细信息

为了探究中国北方农牧交错带冬春风蚀季节生物篱与作物残茬组合对间作裸露秋翻地的防护作用,采用风蚀圈和野外移动式风洞试验的方法对研究区土壤风蚀情况进行监测,利用PC-3型自动气象站进行风速测定。结果表明,油葵秆生物篱减小了间作裸地近地面风速,提高了地表粗糙度;从防风蚀效果看草谷子茬优于油葵秆生物篱;在距油葵秆生物篱或草谷子茬下风向裸地不同位置处,土壤风蚀量基本呈先增加后减小的单峰曲线变化趋势,在4m左右土壤风蚀量最大,在篱和茬的双重保护下,距茬5m处发生了风积现象;土壤风蚀量降低率基本呈"V"字型分布;土壤风蚀模数随风速增大而增加,在生物篱的保护下5～15m/s风速时土壤风蚀降低率为5.03%～20.53%。因此,油葵秆生物篱具有防风蚀作用,而且与草谷子残茬组合对间作裸地会起到更好的固土防蚀作用。

关键词：土壤风蚀生物篱作物残茬移动式风洞风蚀圈

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向日葵和马铃薯间作模式的生产力及水分利用

农业工程学报 2012年第18期28卷 127-133页

作者：董宛麟张立祯于洋苟芳赵沛义妥德宝潘学标中国农业大学资源与环境学院农业气象系北京100193 农业部武川农业环境科学观测实验站北京100193 内蒙古农牧业科学院植物营养与分析研究所呼和浩特010031

本研究通过对不同间作模式中作物水分吸收和利用的分析比较,探讨间作提高产量的机理,提出适合当地生态环境的最优间作模式,并提供一定理论依据。于2009年和2010年在内蒙古武川进行了大田试验,研究马铃薯/向日葵不同间作模式水分吸收和利... 详细信息

本研究通过对不同间作模式中作物水分吸收和利用的分析比较,探讨间作提高产量的机理,提出适合当地生态环境的最优间作模式,并提供一定理论依据。于2009年和2010年在内蒙古武川进行了大田试验,研究马铃薯/向日葵不同间作模式水分吸收和利用,结果表明,马铃薯/向日葵2种间作模式:2行马铃薯:2行向日葵(2P:2S)和4行马铃薯:4行向日葵(4P:4S)的土地当量比LER为1.2～1.3,都具有较强的间作产量优势。其中,4P:4S间作体系2年平均的LER为1.26,间作优势最大。4P:4S间作马铃薯的农田蒸散量ET与单作马铃薯的ET相比差异不显著。单作向日葵和间作向日葵的农田蒸散量ET无显著差异。虽然,2P:2S间作模式和4P:4S间作模式的马铃薯水分利用效率WUE比单作分别降低了81%和66%,但2种间作模式下向日葵的水分利用效率与单作相当。因此,在马铃薯和向日葵间作模式中,整体的水分利用效率提高了,水分当量比WER在1.2～1.3,其中4P:4S间作系统的水分当量比2a均为1.3,说明该体系具有显著的水分利用优势。综合分析认为,马铃薯/向日葵间作特别是4P:4S间作模式有利于提高土地生产力和农田水分的利用效率,在可持续雨养农业发展中具有很好的应用价值。

关键词：蒸散量水分土壤马铃薯/向日葵间作水分当量比土地当量比风障

Shape optimisation of basin insulator for DC gas insulated switchgear/gas insulated transmission lines based on artificial bee colony algorithm

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High Voltage 2024年第2期9卷 275-286页

作者： Yi Luo Shiyi Mao Ju Tang Zijun pan Cheng pan State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and AutomationWuhan UniversityWuhanChina

The surface charge accumulation on the basin insulator is a particular problem in high-voltage direct current(HVDC)gas insulated switchgears(GIS)and gas insulated trans-mission lines(GIL),which restricts the development and application of extra/ultra high-voltage(EHV/UHV)*** surface charge distribution and anti-flashover performance are closely related to the insulator *** obtain the optimal basin insulator,a shape optimisation model based on artificial bee colony algorithm was established,and the minimisation objective functions based on capacitive(initial)electric field distribution and resistive(steady-state)electric field distribution were respectively *** optimisation results of the two objective functions were calculated,and the electric field and charge distribution on the surface of the insulator before and after optimisation were evaluated and compared using the simulation *** results indicated that the optimisation based on the capacitive electric field can significantly inhibit the surface charge accumulation,and the optimised insulator can significantly reduce the surface normal electric field and make the distribution of the tangential electric field more uniform,and the maximum tangential electric field can be reduced by 10%;the optimisation based on resistive electric field can achieve similar results,but requires more computational *** on the results,the‘anti-charge’basin insulator structure suitable for the DC field was given.

关键词： insulator artificial charge

基于COSIM模型的棉花区域产量动态预测研究——以新疆阿克苏市为例

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棉花学报 2018年第1期30卷 83-91页

作者：胡莉婷潘学标王雪姣胡琦中国农业大学资源与环境学院北京100193 新疆维吾尔自治区气象局农业气象台乌鲁木齐830002

【目的】提高基于作物生长模型进行产量动态预测的准确率。【方法】以新疆阿克苏市为例,采用1991―2014年的气象资料、棉花产量资料和棉花的物候资料,通过应用COSIM棉花模型分别以多年平均播种期和适宜播种区间内多个播种期作为播种期输... 详细信息

【目的】提高基于作物生长模型进行产量动态预测的准确率。【方法】以新疆阿克苏市为例,采用1991―2014年的气象资料、棉花产量资料和棉花的物候资料,通过应用COSIM棉花模型分别以多年平均播种期和适宜播种区间内多个播种期作为播种期输入,比较分析两种产量预测方法的效果。【结果】结果表明:两种方法的预报准确率均在90.0%以上,在阿克苏市均有很好的适用性。但对比分析得出,在棉花生育期内按照月份进行产量动态预测时,以及预报年份实际播种期不确定时,基于适宜播种期区间的多播种期预测方法的预报准确率更高。【结论】研究结果为阿克苏市提供了两种基于作物生长模型的棉花产量预报方法 ,针对不同预报年的特征选择合适的预报方法可以提高预报准确率,同时可为其他棉花产区的产量动态预测提供参考和借鉴。

关键词：棉花 COSIM模型播种期产量预测

New opportunities for ferroelectric deep-UV nonlinear optical crystals

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Science China Materials 2024年第3期67卷 1004-1005页

作者： Miriding Mutailipu Shilie pan Research Center for Crystal Materials Xinjiang Technical Institute of Physics and ChemistryChinese Academy of SciencesUrumqi 830011China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Deep-ultraviolet(deep-UV)light with the wavelength below200 nm is one of the most crucial elements of both laser-driven industrial and scientific applications in recent years[1].DeepUV light has been produced using a variety of techniques,such as gas discharge lamps,synchrotron radiation,excimer lasers,free electron lasers,and nonlinear frequency conversion.

关键词： nonlinear optical ferroelectric

Time-domain Differential Protection Based on Operating and Restraining Trajectory Indices for Lines Connecting Battery Storage Energy Stations

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1074-1086页

作者： Yingyu Liang Cunyue pan School of Mechanical and Electrical Engineering China University of Mining and Technology(Beijing)BeijingChina

Battery energy storage stations(BESSs)pose sever-al challenges for both phasor-based differential protection and the newly-proposed time-domain differential *** challenges include low sensitivity and even ***,the negative impact of various nonideal conditions,including current transformer(CT)saturation,errors,and outliers,on the security of differential protection remains an important *** by the aforementioned issues,this study ac-counts for the trajectory distribution discrepancy on Cartesian plane under various conditions and proposes a time-domain dif-ferential protection *** this paper,the trajectory formed by operating and restraining current samples is ***,after considering different operating states,the fault severity levels,and nonideal conditions,the variances in trajectory distribution between internal and external faults are extensively *** this basis,the Cartesian plane is divided into operating,uncertainty,and restraining ***-ther,the operating and restraining trajectory indices are meticu-lously designed and a protection criterion based on these indi-ces is formed to accurately separate internal faults from other events,unaffected by CT saturation,errors,and *** exceptional performance of the proposed protection method is extensively validated through PSCAD simulations and a hard-ware-in-the-loop testing *** the dependability,sensitivity,and security,the proposed protection method outper-forms three state-of-the-art differential protection methods.

关键词： Battery energy storage station time-domain differential protection operating trajectory index(OTI) restraining trajectory index(RTI)

A Time-Domain Numerical Simulation for Free Motion Responses of Two Ships Advancing in Head Waves

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China Ocean Engineering 2024年第3期38卷 519-530页

作者： pan Su-yong CHENG Yong School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

The constant panel method within the framework of potential flow theory in the time domain is developed for solving the hydrodynamic interactions between two parallel ships with forward *** solving problems within a time domain framework,the free water surface needs to simultaneously satisfy both the kinematic and dynamic boundary conditions of the free water *** provides conditions for adding artificial damping *** the Runge−Kutta method to solve equations related to *** upwind differential scheme is used in the present method to deal with the convection terms on the free surface to prevent waves *** the comparison with the available experimental data and other numerical methods,the present method is proved to have good mesh convergence,and satisfactory results can be *** constant panel method is applied to calculate the hydrodynamic interaction responses of two parallel ships advancing in head *** simulations are conducted on the effects of forward speed,different longitudinal and lateral distances on the motion response of two modified Wigley ships in head *** further investigations are conducted on the effects of different ship types on the motion response.

关键词： ship motions time domain simulation forward speed different distances wave loads