【摘 要】
：
Dear editor,rnWith the extensive implementation of high-speed railway ac-celeration,higher requirements for safety and stability are put forward.In order to gua
【机 构】
：
Institute of System Science and Technology, Southwest Jiaotong University, Chengdu 611756, China;Nat
论文部分内容阅读
Dear editor,rnWith the extensive implementation of high-speed railway ac-celeration,higher requirements for safety and stability are put forward.In order to guarantee the safety of the high-speed train(HST),it is critical to detect the abnormal state in operation.Bogie that plays an important role in reduc-ing vehicle vibration is connected to the track and the train body,and its health condition directly affects the safe oper-ation of train.rnThere is a correlation between the vibration of train body and the state of the bogie.With the deterioration of me-chanical components in the whole system,the vibration sig-nal also changes.Many sensors are installed on the HST which is tracked and monitored for a while.Then a con-siderable amount of train data will be obtained,normally containing abundant fault information.Because the prin-ciple of bogie failure is complex and the fault features are difficult to visualize,it is hard to extract fault information using traditional signal processing methods.As such,a new and effective method in dealing with fault diagnosis of train bogies is of significance.
其他文献
备受社会各界广泛关注的国家脱贫攻坚普查公报日前新鲜“出炉”,结果显示,我国脱贫攻坚战取得了全面胜利,中西部22省(区、市)建档立卡户全面实现不愁吃、不愁穿,义务教育、基
Scalable board games,including Five in a Row(or Gomoku)and Weiqi(or Go),are generalized so that they can be played on or by quantum computers.We adopt three pri
社区治理是整个国家治理的末梢与基础,因此,从目前基层社区治理的现状出发,从国家治理规范化的角度出发,去讨论社区治理的专业化问题,意义重大。首先,社区治理专业化是法治的需要。从制度设置看,根据《中华人民共和国城市居民委员会组织法》《中华人民共和国村民委员会组织法》(以下统称为村居委员会组织法)的规定,(城乡)社区属于居(村)民的自治区间,社区居(村)民委员会是基层群众自治组织。在党建引领的要求下,社区“两委”(社区党委与居民委员会)是社区实行自我管理、自我教育、自我服务的核心组织。法治定位是工作和讨论的基础
Dear editor,rnPlug-in hybrid electric vehicles(PHEVs),which can be charged through an external power grid,have been regarded as one of the research areas for th
The length and width of insect body are critical parameters for entomological radar species identification.However,the body width is not measurable in entomolog
Cooperative UAV swarms typically adopt coalition-based network structures for executing tasks more efficiently.Coalition heads in such networks need to do both
Non-convex models,like deep neural networks,have been widely used in machine learning applications.Training non-convex models is a difficult task owing to the s
Dear editor,rnSwitched positive systems exist in many applications[1,2].Their stability differs from that of standard switched sys-tems.The main difference is t
2020年9月,湖北省荆州市民政局引导荆州市慈善总会资金发起“情满荆江·百镇千村社工站”建设服务项目(以下简称社工站项目),拉开了荆州市乡镇(街道)社工站建设的大幕。经过一段时间的探索和实践,逐步形成了“政府资金引导、慈善资金助力、乡镇(街道)支持、村(居)委会协同、社工机构实施”的试点工作机制,通过综合发力,推进社工站高质量发展。
“六一”儿童节前夕,重庆市九龙坡区黄桶坪街道96名困境儿童每人都收到了一份不同的礼物--这份礼物来自他们的“微心愿”。这是由重庆市九龙坡区众爱社会工作服务中心具体实施,政府部门、社区、爱心企业、志愿者、爱心人士等多方力量共同参与的困境儿童帮扶项目之一。