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Fault Diagnosis Method of Wind Turbines Based on Wide Deep Convolutional Neural Network With Resampling and Principal Component Analysis [PDF]
, 2023 Fault diagnosis of wind turbines suffers from less training data and noises. A method based on wide deep convolutional neural network with resampling and principal component analysis was presented for the diagnosis of mechanical faults (that is the main ...
BAO Yanyang, LI Dazi, LIU Zhan
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工程建设, 2021 依据精密加工过程中机床振动频率特点，设计了一种基于巨磁阻单元的三轴加速度传感器。该三轴加速度传感器机械感应部分采用对称四翼式结构，通过合理布局巨磁阻单元构成的惠斯通电桥测量三个方向的加速度，机械感应部分与信号输出部分的一体化设计大大减小了产品体积。对三轴加速度传感器进行了灵敏度仿真与试验，详细分析了仿真与试验的结果。
晓燕 王 +3 more
semanticscholar +1 more source
工程技术与管理, 2020 风机异常必然伴随着振动，所以风机的振动状况是判定风机故障的重要指标。射流风机作为隧道内机电通风系统中的核心设备，承担着输送和调节空气或排除烟尘的重要作用。它的正常运转是隧道健康安全的重要保障，因此对其的运行状态监测和故障诊断具有重要意义。根据射流风机的结构及运行特点，从振动检测分析为基础，结合工程实际案例，利用现场监测振动频谱及数据，对风机日常使用中出现的振动异常现象进行分析诊断。针对机组振动异常情况提出改进措施和方案，以达到消除或减小风机异常振动的效果。
枫 邱
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Design of pre-warning system for oil pipeline based on Beidou short message [PDF]
, 2017 为解决移动通信网络盲区长距离输油管道盗漏预警的问题,利用北斗FB3511模块的短报文卫星通信功能,设计了集单片机、DSP、北斗模块于一体的低功耗长距离输油管道预警系统。根据输油管道预警系统工程应用的要求与通信网络盲区无法使用移动网络链路进行数据传输的特点,提出了实时预警、地理位置定位、分布式拓扑结构及低功耗的功能要求,据此完成了整个系统的方案设计。预警系统硬件平台由信号采集与调理模块、单片机模块、DSP模块、北斗短报文模块及供电模块组成,详细介绍了整个系统的工作流程。现场应用试验结果表明 ...
孙介涛 +5 more
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Multi-source information transmission and classification algorithm for equipment based on compressed sensing [PDF]
, 2020 Aiming at the characteristics of various types of equipment in coal preparation plant and the dispersion of monitoring points,a multi-source information wireless transmission and classification algorithm for equipment based on compressed sensing was ...
Boming SONG +3 more
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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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Joint vibrotactile coding for machine recognition and human perception [PDF]
, 2023 In order to accurately transmit the content meaning of vibrotactile signals and achieve intelligent recognition and signal reconstruction, a joint vibrotactile coding scheme for machine recognition and human perception was proposed.At the encoding end ...
Tiesong ZHAO, Ying FANG, Yiwen XU
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Modeling analysis and protection study of vertical and horizontal vibrations in Hami melon logistics packages [PDF]
, 2023 Objective: Optimized cushioning packaging. Methods: Taking Hami melon and its packaging as the research object, conducted sweep frequency vibration test on 5-layer stacked packaging, measured the natural frequency, maximum power Spectral density and peak
GAO Jia +5 more
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Fault diagnosis of rolling bearings based on variational mode decomposition and calculus enhanced energy operator [PDF]
, 2016 Aiming at the characteristics of rolling bearing fault vibration signals and considering the merits of variational mode decomposition in mono-component separation and calculus enhanced energy operator in transient impulse detection, this article ...
FENG Zhi-peng, ZHANG Dong
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Non-stationary signal combined analysis based fault diagnosis method [PDF]
, 2020 Considering the complementarity between the deep learning,spectrum and time frequency analysis methods,a multi-stream framework was designed by combining the convolutional network,Fourier transform and wavelet package decomposition methods,with the aim ...
Huimin LU +4 more
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