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Condition monitoring of a wind turbine generator using a standalone wind turbine emulator
Himani,Ratna DAHIYA
《能源前沿(英文)》 2016年 第10卷 第3期 页码 286-297 doi: 10.1007/s11708-016-0419-5
关键词: condition monitoring (CM) wind turbine emulator (WTE) wind turbine generator (WTG) maximum power point tracking (MPPT) tip speed ratio (TSR) rotor faults stator faults
《机械工程前沿(英文)》 doi: 10.1007/s11465-021-0661-3
关键词: tool condition monitoring cutting temperature neural network learning rate adaption
In-situ condition monitoring of reinforced concrete structures
Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 420-437 doi: 10.1007/s11709-016-0336-z
关键词: concrete carbonation chloride corrosion monitoring models
Distributed flexible reconfigurable condition monitoring and diagnosis technology
HU You-min, YANG Shu-zi, DU Run-sheng
《机械工程前沿(英文)》 2006年 第1卷 第3期 页码 276-281 doi: 10.1007/s11465-006-0025-z
关键词: chemical diagnosis system configuration monitoring equipment
Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis
Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 279-280 doi: 10.1007/s11465-017-0476-4
Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 281-302 doi: 10.1007/s11465-017-0442-1
Electric power conversion system (EPCS), which consists of a generator and power converter, is one of the most important subsystems in a direct-drive wind turbine (DD-WT). However, this component accounts for the most failures (approximately 60% of the total number) in the entire DD-WT system according to statistical data. To improve the reliability of EPCSs and reduce the operation and maintenance cost of DD-WTs, numerous researchers have studied condition monitoring (CM) and fault diagnostics (FD). Numerous CM and FD techniques, which have respective advantages and disadvantages, have emerged. This paper provides an overview of the CM, FD, and operation control of EPCSs in DD-WTs under faults. After introducing the functional principle and structure of EPCS, this survey discusses the common failures in wind generators and power converters; briefly reviewed CM and FD methods and operation control of these generators and power converters under faults; and discussed the grid voltage faults related to EPCSs in DD-WTs. These theories and their related technical concepts are systematically discussed. Finally, predicted development trends are presented. The paper provides a valuable reference for developing service quality evaluation methods and fault operation control systems to achieve high-performance and high-intelligence DD-WTs.
关键词: direct-drive wind turbine electric power conversion system condition monitoring fault diagnosis operation control under faults fault tolerance
Ayaho MIYAMOTO, Risto KIVILUOMA, Akito YABE
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 569-604 doi: 10.1007/s11709-018-0498-y
关键词: condition assessment short & medium span bridge structural health monitoring(SHM) long-term data collection system maintenance bridge performance information technology loading vehicle(public bus) in-situ loading
Real-time monitoring of brake shoe keys in freight cars
Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU
《信息与电子工程前沿(英文)》 2015年 第16卷 第3期 页码 191-204 doi: 10.1631/FITEE.1400305
关键词: Condition monitoring Feature expression Brake shoe key Machine vision
Distributed monitoring and diagnosis system for hydraulic system of construction machinery
Xiaohu CHEN, Wenfeng WU, Hangong WANG, Yongtao ZHOU,
《机械工程前沿(英文)》 2010年 第5卷 第1期 页码 106-110 doi: 10.1007/s11465-009-0089-7
关键词: construction machinery hydraulic system distributed condition monitoring controller area net (CAN) field bus fault diagnosis
Chul Jin Cho, Young Park
《工程(英文)》 2016年 第2卷 第3期 页码 360-365 doi: 10.1016/J.ENG.2016.03.016
近年来,高速铁路各项技术不断发展,列车运行速度从300 km•h–1 提高到400 km•h−1。本文介绍了由韩国研究者开发和论证的技术,即400 km•h−1 级集电性能评估方法。此外,本文还详细解释了基于视频图像的监测技术,其不需要直接接触供电系统的任何部件,这项技术被应用于检测以时速400 km 运行的高铁上架空接触网组件的稳定性。与常规使用激光传感器或者线相机(line camera)来监控架空接触网的系统不同,开发的新型系统通过视频数据来测量其处于活动状态的参数。根据在商业线路上实地测量的结果,这种系统能有效地测量架空接触网的各项参数。
关键词: 高速铁路 架空接触网 状态监测 基于图像处理的测量方式
基于自动原位校准的大型飞机构件装配过程三维微位移监测系统 Article
贾振元, 梁冰, 刘巍, 刘坤, 马建伟
《工程(英文)》 2022年 第19卷 第12期 页码 105-116 doi: 10.1016/j.eng.2021.02.023
三维(3D)微位移监测在大型飞机装配中起着至关重要的作用。本文提出了一种广泛适用的基于接近传感器的高精度在线3D微位移监测方法和系统,以及相应的原位校准方法,可应用于飞机装配过程中遇到的各种极端工作条件,如紧凑和遮挡的空间。首先建立了一个3D监测模型,仅基于接近传感器测量的一
维距离实现3D微位移监测,该模型涉及传感器外部参数,如测量原点(PBP)和单位位移矢量(UDV)。然后,结合空间变换原理和加权优化校准方法,获得高精度外部参数。最后,针对尾翼装配过程开展了校准和监测实验。PBP 的校准精度在X、Y 方向优于±10 μm,在Z 方向优于±2 μm,UDV 的校准精度优于0.07°。此外,3D微位移监测系统的精度可达到±15 μm。总体而言,本文为基于接近传感器的3D微位移监测的建模和校准提供了新的见解,并为飞机装配过程中紧凑空间内的几何测量提供了一种高精度、高效率、低成本的技术手段。
杨文广,蒋东翔
《中国工程科学》 2015年 第17卷 第3期 页码 24-29
该文研究了大型风力机组的远程智能监测与诊断系统的关键技术问题,介绍了系统的开发情况。整个系统采用分布式架构,由数据采集与处理、实时数据存储、智能监测与诊断和人机交互4个子系统组成。智能监测与诊断子系统采用了知识库/推理机架构,推理机是一个自主开发的基于模糊Rete算法的模糊专家系统,知识库中存储了来源于风力机故障实验研究的常见振动故障的诊断知识。通过故障仿真,验证了整套系统的有效性。
关键词: 风力机;故障诊断系统;模糊专家系统
Peng ZHOU, Zhike PENG, Shiqian CHEN, Yang YANG, Wenming ZHANG
《机械工程前沿(英文)》 2018年 第13卷 第2期 页码 292-300 doi: 10.1007/s11465-017-0443-0
With the development of large rotary machines for faster and more integrated performance, the condition monitoring and fault diagnosis for them are becoming more challenging. Since the time-frequency (TF) pattern of the vibration signal from the rotary machine often contains condition information and fault feature, the methods based on TF analysis have been widely-used to solve these two problems in the industrial community. This article introduces an effective non-stationary signal analysis method based on the general parameterized time–frequency transform (GPTFT). The GPTFT is achieved by inserting a rotation operator and a shift operator in the short-time Fourier transform. This method can produce a high-concentrated TF pattern with a general kernel. A multi-component instantaneous frequency (IF) extraction method is proposed based on it. The estimation for the IF of every component is accomplished by defining a spectrum concentration index (SCI). Moreover, such an IF estimation process is iteratively operated until all the components are extracted. The tests on three simulation examples and a real vibration signal demonstrate the effectiveness and superiority of our method.
关键词: rotary machines condition monitoring fault diagnosis GPTFT SCI
A review of condition-based maintenance: Its prognostic and operational aspects
Yanrong LI, Shizhe PENG, Yanting LI, Wei JIANG
《工程管理前沿(英文)》 2020年 第7卷 第3期 页码 323-334 doi: 10.1007/s42524-020-0121-5
关键词: condition-based maintenance prognostics operational decision-making reliability
Trend prediction technology of condition maintenance for large water injection units
Xiaoli XU, Sanpeng DENG
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 171-175 doi: 10.1007/s11465-009-0091-0
关键词: water injection units condition-based maintenance trend prediction
标题 作者 时间 类型 操作
Condition monitoring of a wind turbine generator using a standalone wind turbine emulator
Himani,Ratna DAHIYA
期刊论文
Real-time tool condition monitoring method based on temperature measurement and artificial neural network
期刊论文
In-situ condition monitoring of reinforced concrete structures
Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR
期刊论文
Distributed flexible reconfigurable condition monitoring and diagnosis technology
HU You-min, YANG Shu-zi, DU Run-sheng
期刊论文
Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis
Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI
期刊论文
Overview of condition monitoring and operation control of electric power conversion systems in direct-drive
Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE
期刊论文
Frontier of continuous structural health monitoring system for short & medium span bridges and condition
Ayaho MIYAMOTO, Risto KIVILUOMA, Akito YABE
期刊论文
Real-time monitoring of brake shoe keys in freight cars
Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU
期刊论文
Distributed monitoring and diagnosis system for hydraulic system of construction machinery
Xiaohu CHEN, Wenfeng WU, Hangong WANG, Yongtao ZHOU,
期刊论文
Non-stationary signal analysis based on general parameterized time--frequency transform and its application in the feature extraction of a rotary machine
Peng ZHOU, Zhike PENG, Shiqian CHEN, Yang YANG, Wenming ZHANG
期刊论文
A review of condition-based maintenance: Its prognostic and operational aspects
Yanrong LI, Shizhe PENG, Yanting LI, Wei JIANG
期刊论文