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沈阳理工大学学报 2007年第4期26卷 71-73页

作者：徐英凤龚民陈白宁赵碧沈阳理工大学机械工程学院辽宁沈阳110168

设计一种基于单尤片机的直流调速控制装置,装置以AT89C51单片机为核心,以小型直流电机为控制对象,实现双闭环PI控制.装置包括转速给定、转速显示、转速检测、电流检测和转速控制的硬件、软件设计,其中转速控制是通过改变三相整流电路中... 详细信息

设计一种基于单尤片机的直流调速控制装置,装置以AT89C51单片机为核心,以小型直流电机为控制对象,实现双闭环PI控制.装置包括转速给定、转速显示、转速检测、电流检测和转速控制的硬件、软件设计,其中转速控制是通过改变三相整流电路中可控硅的移相触发脉冲来改变整流电压,进而实现调速的目的.

关键词：直流电机单片机直流调速双闭环控制可控硅触发

Double DQN Method For Botnet Traffic Detection System

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Computers, Materials & Continua 2024年第4期79卷 509-530页

作者： Yutao Hu Yuntao Zhao yongxin feng Xiangyu Ma School of Information Science and Engineering Shenyang Ligong UniversityShenyang110159China Graduate School Shenyang Ligong UniversityShenyang110159China

In the face of the increasingly severe Botnet problem on the Internet,how to effectively detect Botnet traffic in realtime has become a critical *** the existing deepQnetwork(DQN)algorithminDeep reinforcement learning can solve the problem of real-time updating,its prediction results are always higher than the actual *** Botnet traffic detection,although it performs well in the training set,the accuracy rate of predicting traffic is as high as%;however,in the test set,its accuracy has declined,and it is impossible to adjust its prediction strategy on time based on new data ***,in the new dataset,its accuracy has declined ***,this paper proposes a Botnet traffic detection system based on double-layer DQN(DDQN).Two Q-values are designed to adjust the model in policy and action,respectively,to achieve real-time model updates and improve the universality and robustness of the model under different data *** show that compared with the DQN model,when using DDQN,the Q-value is not too high,and the detectionmodel has improved the accuracy and precision of Botnet ***,when using Botnet data sets other than the test set,the accuracy and precision of theDDQNmodel are still higher than DQN.

关键词： DQN DDQN deep reinforcement learning botnet detection feature classification

Attack Technology Research for Web Service

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维普期刊数据库

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沈阳理工大学学报 2014年第2期33卷 88-94页

作者： SU Guangnan feng yongxin shenyang ligong university

Web service is characterized by its isomerism and loose coupling;thus greatly facilitate the application of operation in distributed situation,but its disadvantages cause serious safety *** principium and characteristic of Web service classical attack technology are expatiated,classical attack techniques are classified,and attack technology is simulated,and then,the directions and the future of Web security are discussed.

关键词： Web service attack technology simulation security

Research on Synchronization Technology of DSSS Signal Based on UQPSK

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沈阳理工大学学报 2015年第3期34卷 90-94页

作者： ZHANG Bo feng yongxin shenyang ligong university

In communication systems operating over satellite links,increasing requirement is now being made of unbalanced quaternary phase shift keyed(UQPSK)*** signal format is a QPSK signal in w here the tw o orthogonal components of the carrier have unequal pow er and are modulated w ith independent binary data streams of different *** transmission scheme is most useful w hen the data of tw o different sources w ith possibly varying rates have to be transmitted in the same frequency *** feature can be applied to solve the problem of parallel transmission of inter-satellite link(ISL)ranging signal and data *** direct sequence spread spectrum(DSSS)signal based on UQPSK is introduced into inter-satellite link communication system of navigation *** research is focused on synchronization technology of UQPSK DSSS signal and design of synchronization *** establishment of communication system proves the correctness of the synchronization loop.

关键词：土壤重金属铬光谱分析标准加入法

Experimental Study on Infrared Extinction Ability of Foams Cloud

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Experimental Study on Infrared Extinction Ability of Foams C...

Research on dynamic response characteristics of CFRP/Al HC SPs subjected to high-velocity impact

真空与表面工程——第十届国际真空冶金与表面工程学术会议、2011年真空工程学术会议、2011年真空咨询工作会议

作者： DU Xue-feng~(1,2) PAN Gong-pei~1 QU Jia-hui~2 ZHAO Xin-ying~2 WU Chun-mei~3 (1.308 Researches,School of Chemical Engineering,Nanjing university of Science and Technology,Nanjing 21009 2.School of Equipment Engineering,shenyang ligong university,shenyangl 10159 3 Department of the Basics Air Force Radar Academy,Wuhan 430010)

Extinction ability of foam in the range of 3～5μm and 8～14μm was studied by OPAG33 open-path Fourier transform infrared(OP-FTIR)*** study shows the relation between infrared transmittance and the concentration of *** the beginning,the infrared transmittance decreases when the concentration of frother *** then the infrared transmittance increases after the concentration of frother reaches 0.1mol/l. Diameter of foam is smaller,the infrared transmittance is *** of foam is larger,the infrared transmittance is *** infrared transmittance is less than 20%when the diameter is 4～7mm and the thickness is 10cm.

关键词： photo-electricity countermeasures foam middle and far infrared extinction

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Defence Technology（防务技术） 2018年第5期14卷 503-512页

作者： Guo-wen Gao En-ling Tang Min-hui feng Ya-fei Han Yue Li Mei Liu ying-liang Xu Li Wang Xiao-chu Lin Rui-zhi Wang Yi-guang Cheng liang-liang Zhao Zhi-qiang liang Jun-ru Wang Guan-jie Zhao Qing Gao Tian-zhi Zheng School of Equipment Engineering Shenyang Ligong University

CFRP/Al HC SPs(Carbon Fiber Reinforced Plastic/Aluminum Honeycomb Sandwich Panels)composite structures are widely used in the aerospace and many other fields due to their excellent performances. In order to reveal profoundly the dynamic response characteristics of CFRP/Al HC SPs composite structure under high-velocity impact loading, the experiments about aluminum honeycomb core and CFRP/Al HC SPs composite structure impacted by high-velocity projectiles have been performed by using a one-stage light gas gun loading and a high-speed camera systems, respectively. The whole physical process of collision is analyzed by using TEMA software which is provided by high-speed camera's manufacturer,and the pictures and related physical parameters of the projectile passing through the different layers at the key moments are extracted based on the set frame rate of the video. Meanwhile, the ABAQUS/Explicit module was used to conduct numerical simulation under the same conditions as the experiments, and extracting the pictures and related physical parameters during the projectile penetrating through aluminum honeycomb core and the sandwich panels at the different key moments. The results show that the durations of action for the projectile impacting the Al HC core and the CFRP/Al HC SPs at the velocity about 280 m/s were 86 μs and 240 μs in experiments, respectively, and the durations of action were 90.7μs and 236.2 μs at the same experimental conditions in numerical simulation, which were basically consistent comparing the experimental to simulated results. Moreover, more than 70% for the kinetic energy of the projectile consumed by the sandwich panels was attributed to the front panel and the aluminum honeycomb core during the entire impact process, and all these have verified the reliability of the numerical simulation.

关键词： ABAQUS/Explicit Duration of action between projectile and target Energy absorption

基于时分数据调制信号的N-χ系数捕获判决方法

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兵工学报 2022年第5期43卷 1117-1128页

作者：冯永新何宽刘芳梁东沈阳理工大学研究生院辽宁沈阳110159 沈阳理工大学信息科学与工程学院辽宁沈阳110159

时分数据调制(TDDM)信号的应用大大提高了扩频通信系统的频带利用率和适应复杂环境的能力。针对TDDM信号捕获过程中的基带数据翻转位置模糊问题,考虑到TDDM信号独有的调制特性以及现有捕获判决方法的不足,提出一种N-χ系数捕获判决方法... 详细信息

时分数据调制(TDDM)信号的应用大大提高了扩频通信系统的频带利用率和适应复杂环境的能力。针对TDDM信号捕获过程中的基带数据翻转位置模糊问题,考虑到TDDM信号独有的调制特性以及现有捕获判决方法的不足,提出一种N-χ系数捕获判决方法,该方法基于基带数据翻转位置与并行处理中相关结果的线性关系建立χ系数判决式,通过对当前累积时间进行N分段并测得每段区间内χ系数的平均值,进而得出基带数据翻转的准确位置。仿真结果表明:当分段数N≥4时,N-χ系数捕获判决方法判决基带数据翻转位置的精确度在99%以上;与模糊抑制捕获判决方法进行对比分析,无论是捕获精度或是环境适应性,N-χ系数捕获判决方法都优于模糊抑制捕获判决方法,验证了该方法用于消除基带数据翻转位置模糊问题的有效性和先进性;该方法的研究为新一代扩频调制接收设备的开发提供了理论参考。

关键词：通信系统时分数据调制基带数据翻转捕获判决

Improvement of Update Mechanism for Object Management in High Level Architecture

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沈阳理工大学学报 2014年第2期33卷 81-87页

作者： feng yongxin FEI Shunchao TIAN Minghao QIAN Bo shenyang ligong university

As the distributed interactive simulation technology,the High Level Architecture(HLA)with the common Runtime Infrastructure(RTI)services has been applied to all kinds of simulation and computation areas,w hich has more interoperability and ***,w ith the development of hierarchical RTI softw are technology,the efficiency,flexibility,and levels of resolution *** be *** ever,updating mechanism for object management in hierarchical RTI can't supply the dynamic object subscription to the simulation operation,specially updating limitation in consistence and ***,the improvement of update mechanism for object management has been proposed,and the process of w hich has been *** results of simulation show that the improvement mechanism can achieve better updating rates and latency than traditional mechanism,considering the consistence need.

关键词： High Level Architecture (HLA) Runtime Infrastructure (RTI)

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一种低复杂度的超高阶码索引调制方法

电子与信息学报 2021年第7期43卷 1922-1929页

作者：刘芳冯永新沈阳理工大学信息科学与工程学院沈阳110159 沈阳理工大学研究生院沈阳110159

为了应对直接序列扩频(DSSS)中信息传输率低的局限,出现了多进制扩频及索引调制等技术,由于此系列技术中附加信息都是通过伪码变换来映射的,因此调制阶数越大,复杂度也越大,而当系统所承受的复杂度受限时,调制阶数也就无法提升。为解决... 详细信息

为了应对直接序列扩频(DSSS)中信息传输率低的局限,出现了多进制扩频及索引调制等技术,由于此系列技术中附加信息都是通过伪码变换来映射的,因此调制阶数越大,复杂度也越大,而当系统所承受的复杂度受限时,调制阶数也就无法提升。为解决高阶信息传输率受限问题,该文提出一种低复杂度的超高阶码索引调制(UHO-CIM)方法,通过2维信息的分组来进行多码集索引,从而降低通道数量,进而通过3维信息的分组来进行循环移位索引,从而在不增加通道情况下大幅度地提高传输率,而且利用移位通道和非移位通道关系,去除环境影响。该方法不仅可以有效传输多维信息,而且与现有方法比较,复杂度大大降低,综合性能具有明显优势;此外,现有方法很难达到高阶及超高阶的信息传输,而提出的方法可实现调制阶数大于15的超高阶信息传输,从而为高效扩频通信应用提供可借鉴技术。

关键词：直接序列扩频索引调制超高阶调制阶数