Pub Date : 2016-04-01DOI: 10.7535/HBKD.2016YX02004
Shaofeng Wang, Ji Zhong, Jianguo Wang
{"title":"Research overview of real-time monitoring system for micro leak of three-dimensional pipe network","authors":"Shaofeng Wang, Ji Zhong, Jianguo Wang","doi":"10.7535/HBKD.2016YX02004","DOIUrl":"https://doi.org/10.7535/HBKD.2016YX02004","url":null,"abstract":"","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"37 1","pages":"130-138"},"PeriodicalIF":0.0,"publicationDate":"2016-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"考虑施工“路径”的钢板桩围堰内力分析","authors":"梁栋, 狄方殿, 朱亚洲, 刘菁, 段文博, 陈红霞","doi":"10.7535/hbkd.2016yx02014","DOIUrl":"https://doi.org/10.7535/hbkd.2016yx02014","url":null,"abstract":"针对钢板桩在安装内支撑的过程中其受力是连续的,即内支撑的安装总是发生在钢板桩所受内外水头压力差引起的累积变形之后,以某特大桥钢板桩围堰施工为例,利用有限元分析软件ANSYS建立了钢板桩围堰考虑施工＂路径＂的空间模型,并与实测结果进行了对比分析。计算结果表明：考虑施工＂路径＂效应的分析结果与实测值更为吻合。","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"27 1","pages":"198-204"},"PeriodicalIF":0.0,"publicationDate":"2016-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-01DOI: 10.7535/hbkd.2016yx01009
Enfu Liu, Bo Liu, Xiaoyang Liu, Yi Li
{"title":"An assembly sequence planning method based on composite algorithm","authors":"Enfu Liu, Bo Liu, Xiaoyang Liu, Yi Li","doi":"10.7535/hbkd.2016yx01009","DOIUrl":"https://doi.org/10.7535/hbkd.2016yx01009","url":null,"abstract":"","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"37 1","pages":"52-57"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Advanced treatment of pharmaceutical wastewater by Fenton reagent oxidation process","authors":"Yanan Yang, Xiao-xuan Chen, Chun Liu, Jing Zhang, Jing-liang Yang, Tai-min Xiao","doi":"10.7535/hbkd.2015yx06014","DOIUrl":"https://doi.org/10.7535/hbkd.2015yx06014","url":null,"abstract":"","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"639-643"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To study the robust H∞infinity control for generalized networked control systems with long time delay,it is assumed that the sensors are clock-driver,and controllers and actuators are event-driver in two sampling periods and limited energy of the external disturbance.The augmented state is used to establish uncertain system model of discrete time-varying,and by using Lyapunov function and linear matrix inequalities,the sufficient conditions for dynamic output H∞infinity feedback control are found out.A simulation example shows the effectiveness of the method.
{"title":"Robust H_∞ infinity control for generalized network control systems with long time delay","authors":"Liyun Yang, Dong-Dong Bao, J. Qiu, Xiaoling Sun, Chenxi Zhang, Lijun Zhang","doi":"10.7535/HBKD.2015YX04009","DOIUrl":"https://doi.org/10.7535/HBKD.2015YX04009","url":null,"abstract":"To study the robust H∞infinity control for generalized networked control systems with long time delay,it is assumed that the sensors are clock-driver,and controllers and actuators are event-driver in two sampling periods and limited energy of the external disturbance.The augmented state is used to establish uncertain system model of discrete time-varying,and by using Lyapunov function and linear matrix inequalities,the sufficient conditions for dynamic output H∞infinity feedback control are found out.A simulation example shows the effectiveness of the method.","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"143 1","pages":"394-400"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-08-01DOI: 10.7535/HBKD.2015YX04011
X. Yu, B. Song, Zhao Zhang, Q. Liu
Risk of fatigue failure exists in the tube trailer cylinders under the condition of internal pressure variation and inertial load caused through road transport.In order to estimate the safety state of the cylinders under the action of alternating load,the model of certain geometry sizes is built based on the widely used tube trailer cylinders.The fatigue analysis of tube trailer gas cylinders is made aiming at the action of the internal pressure and the inertial load.The fatigue life distribution of cylinders is obtained under the condition of different loads through the numerical simulation by ANSYS Workbench.The analysis results show that under internal pressure,gas cylinders have limited fatigue life,but can satisfy the requirements;when the inertial load exceeds a certain value,natural gas cylinders of tube trailer is under finite life state,which does not meet the requirements of strength,therefore the inertial load should be controlled.
{"title":"Analysis of fatigue life for tube trailer cylinders","authors":"X. Yu, B. Song, Zhao Zhang, Q. Liu","doi":"10.7535/HBKD.2015YX04011","DOIUrl":"https://doi.org/10.7535/HBKD.2015YX04011","url":null,"abstract":"Risk of fatigue failure exists in the tube trailer cylinders under the condition of internal pressure variation and inertial load caused through road transport.In order to estimate the safety state of the cylinders under the action of alternating load,the model of certain geometry sizes is built based on the widely used tube trailer cylinders.The fatigue analysis of tube trailer gas cylinders is made aiming at the action of the internal pressure and the inertial load.The fatigue life distribution of cylinders is obtained under the condition of different loads through the numerical simulation by ANSYS Workbench.The analysis results show that under internal pressure,gas cylinders have limited fatigue life,but can satisfy the requirements;when the inertial load exceeds a certain value,natural gas cylinders of tube trailer is under finite life state,which does not meet the requirements of strength,therefore the inertial load should be controlled.","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"407-412"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.7535/hbkd.2015yx03005
任世伟, 李傲雷
{"title":"单温区管式炉气相输运生长NbSe 2 超导单晶","authors":"任世伟, 李傲雷","doi":"10.7535/hbkd.2015yx03005","DOIUrl":"https://doi.org/10.7535/hbkd.2015yx03005","url":null,"abstract":"","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"251-254"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-04-01DOI: 10.7535/HBKD.2015YX02006
Li-Jun Zhang, Liyun Yang, Chun Liu, J. Qiu, Yue Cong, Dong-Dong Bao
This paper investigates the problem of robust H∞guaranteed cost control for non-linear uncertain switched singular systems with multiple time-delay. Nonlinear is considered to be norm bounded and the systems are regular and impulse free. A sufficient condition for existences of robust H∞guaranteed cost controller is given by the linear matrix inequalities( LMI) at the Lyapunov function and switching rule. It is shown that the closed-loop systems are asymptotically stable. Finally,the results are validated and advantage,through a given example.
{"title":"Robust H_∞ guaranteed cost control for non-linear uncertain switched singular systems with multiple time-delay","authors":"Li-Jun Zhang, Liyun Yang, Chun Liu, J. Qiu, Yue Cong, Dong-Dong Bao","doi":"10.7535/HBKD.2015YX02006","DOIUrl":"https://doi.org/10.7535/HBKD.2015YX02006","url":null,"abstract":"This paper investigates the problem of robust H∞guaranteed cost control for non-linear uncertain switched singular systems with multiple time-delay. Nonlinear is considered to be norm bounded and the systems are regular and impulse free. A sufficient condition for existences of robust H∞guaranteed cost controller is given by the linear matrix inequalities( LMI) at the Lyapunov function and switching rule. It is shown that the closed-loop systems are asymptotically stable. Finally,the results are validated and advantage,through a given example.","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"150-156"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-04-01DOI: 10.7535/hbkd.2015yx02012
Jiushuo Wang, Kai Gao, Jie Zhao, Guo-Jiang Gao
With the rapid development of social network,people can present or share their opinions and emotions on the micro-blog,and as a result,large amount of blog texts and emotional information of different topics are produced. As the traditional text mining algorithms cannot deal with these blog texts with fractional contents and different personal emotions effectively,this paper presents a novel weighting computation approach based on the key characters of micro-blog posts to get the dynamic interests of bloggers on different times. Furthermore,based on the emotion classification,the emotion transition tendency analysis can also be implemented. Experimental results show the feasibility of the presented approach.
{"title":"Research on micro-blog based personal interests and emotion transition tendency","authors":"Jiushuo Wang, Kai Gao, Jie Zhao, Guo-Jiang Gao","doi":"10.7535/hbkd.2015yx02012","DOIUrl":"https://doi.org/10.7535/hbkd.2015yx02012","url":null,"abstract":"With the rapid development of social network,people can present or share their opinions and emotions on the micro-blog,and as a result,large amount of blog texts and emotional information of different topics are produced. As the traditional text mining algorithms cannot deal with these blog texts with fractional contents and different personal emotions effectively,this paper presents a novel weighting computation approach based on the key characters of micro-blog posts to get the dynamic interests of bloggers on different times. Furthermore,based on the emotion classification,the emotion transition tendency analysis can also be implemented. Experimental results show the feasibility of the presented approach.","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"188-194"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-04-01DOI: 10.7535/HBKD.2015YX02003
Shenggang Hu, Luo Yu, J. Xiangdong, Zhou Canfeng, Han Suxin
This paper first outlines the worldwide oil and gas pipeline laying situation by 2013 and industrial applications,the working characteristics and advantages of orbital pipe welding robots using the gas metal arc metal( GMAW). Then the classifications of commonly used welding seam tracking sensors are comprehensively introduced. The sensor working principles,advantages and disadvantages and the application situation in pipeline welding are analysed in details. The studies show that arc sensors and visual sensors have many advantages such as good real-time characteristic,informativeness and high tracking precision,and are most widely used in pipeline welding. Using single sensor in different process can limit the tracking precision easily,but a system with multiple sensors will greatly improve the tracking precision in oil and gas pipeline welding. A system using visual sensor and arc sensor has been used in the gas field pipeline welding in Japan and a good effect has been achieved. Finally the conclusion is drawn that suitable seam tracking sen-sor should be chosen according to the process features and methods,and using a variety of sensors can improve the welding seam tracking precision,which will become the focus of future researches.
{"title":"Research status of seam tracking methods for orbital pipe welding robots","authors":"Shenggang Hu, Luo Yu, J. Xiangdong, Zhou Canfeng, Han Suxin","doi":"10.7535/HBKD.2015YX02003","DOIUrl":"https://doi.org/10.7535/HBKD.2015YX02003","url":null,"abstract":"This paper first outlines the worldwide oil and gas pipeline laying situation by 2013 and industrial applications,the working characteristics and advantages of orbital pipe welding robots using the gas metal arc metal( GMAW). Then the classifications of commonly used welding seam tracking sensors are comprehensively introduced. The sensor working principles,advantages and disadvantages and the application situation in pipeline welding are analysed in details. The studies show that arc sensors and visual sensors have many advantages such as good real-time characteristic,informativeness and high tracking precision,and are most widely used in pipeline welding. Using single sensor in different process can limit the tracking precision easily,but a system with multiple sensors will greatly improve the tracking precision in oil and gas pipeline welding. A system using visual sensor and arc sensor has been used in the gas field pipeline welding in Japan and a good effect has been achieved. Finally the conclusion is drawn that suitable seam tracking sen-sor should be chosen according to the process features and methods,and using a variety of sensors can improve the welding seam tracking precision,which will become the focus of future researches.","PeriodicalId":15965,"journal":{"name":"Journal of Hebei University of Science and Technology","volume":"36 1","pages":"126-133"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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