检索结果-南通市图书馆

检索条件"机构=Engineering Research Center for Mineral Pipeline Transportation of Yunnan"

共 7 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

The Rolling Bearing Fault Diagnosis Based on LMD and LS-SVM

The Rolling Bearing Fault Diagnosis Based on LMD and LS-SVM

引用

第26届中国控制与决策会议

作者： Yongxia Bu Jiande Wu Jun Ma Xiaodong Wang Yugang Fan Faculty of Information engineering and Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation of yunnan

ISBN: (纸本)9781479937097

Rolling bearings vibration signal is complex and non-stationary *** order to diagnose the bearing failures accurately and quickly, propose an approach about rolling bearing fault diagnosis,which is based on LS-SVM and ***, decompose the original vibration signal by LMD（Local Mean Decomposition LMD） to get a series of PF（Production Function, PF）;secondly, establish the AR model of PF components. And getting autoregressive parameters and residual variance of the AR model through the Burgrecursive algorithm, to constitute feature vector;finally, input the feature vector into the LS-SVM for determining the bearing running *** results show that: the method can diagnose the bearing failures quickly and accurately.

关键词： Rolling bearings LMD LS-SVM AR model Fault diagnosis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

research on Moving Target Detection Algorithm Based on MRA and Wavelet Threshold

Research on Moving Target Detection Algorithm Based on MRA a...

引用

第26届中国控制与决策会议

作者： Jingjing Wang Xiaodong Wang Jiande Wu Yugang Fan Guoyong Huang Faculty of Information engineering and Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation of yunnan

ISBN: (纸本)9781479937097

Aiming at solving the noise problem which had lowered the accuracy in the target detection result from the process of image-collection and image-transmission, the paper proposes a new target detection algorithm based on the improved wavelet threshold. Firstly, these images are filtered by a denoising method, which combines the wavelet threshold method with the correlation of the wavelet coefficients, and its "Zoom" feature can eliminate the negative impact of noise;then a combined algorithm which connects background subtraction and two consecutive inter-frame subtraction is set up in order to combine their advantages and improve the effect of target detection. Compared simulation results of the four models, the results show that the target detection method based on multi-scale wavelet threshold is reasonable and effective, and more suitable for the real-time target detection.

关键词： MRA wavelet threshold background subtraction inter-frame difference method moving target detection

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Fault Diagnosis of Industrial Process Based On KICA and LSSVM

Fault Diagnosis of Industrial Process Based On KICA and LSSV...

引用

第26届中国控制与决策会议

作者： Xiaoya Zhang Xiaodong Wang Yugang Fan Jiande Wu Faculty of Information engineering and Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation of yunnan

The paper combines kernel independent component analysis for establishing the fault detection model and the least squares support vector machine for establishing the fault diagnosis model to set up the industrial process monitor model as the growing difficult for the complex industrial process monitoring. It uses the data collected by the industrial process to extract the nonlinear independent component for establishing the detection model, and put the data into the model of LSSVM to identify the fault only when the fault occurs. Finally, using the data of TE process verifies the validity and practical of the method.

关键词： fault detection fault classification KICA LSSVM

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Design of pipeline Displacement Detecting System Based on ZigBee Wireless Sensor Networks

Design of Pipeline Displacement Detecting System Based on Zi...

引用

第26届中国控制与决策会议

作者： Jun Bao Jiande Wu Xiaodong Wang Yugang Fan Guoyong Huang Faculty of Information engineering and Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation of yunnan Province

Most of the gravity-dropped slurry pipelines are underlaid in mountainous areas which are vulnerable to disasters,such as debris flow and landslide. The accumulation of displacement of the pipeline caused by those disasters is very likely to cause pipeline fracture. To solve this problem, a design of detection system for displacement of the pipe which is based on ZigBee wireless sensor network and MEMS accelerometer be put forward. This system adopts modular design which includes central processing unit, data acquisition module, serial communication module and human-computer interface. Different detecting points of the pipeline can realize wireless networking and communication by ZigBee Protocol stack. Detecting points use sensor collecting displacement data and uploading data by wireless network step-by-step, last through serial port to upper computer in central control room and display, save it. And according to those data, it can issue warnings in the event of exceeding threshold. Experiments show that the system has a good stability of communication and can collect pipeline displacement data effectively, when the displacement of pipeline exceeding a threshold, it can effective issue warnings.

关键词： displacement detection ZigBee MEMS accelerometer Full Functional Device FFD

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Blocking Detection of Underground Drainage Pipe Based on CEEMD and GG Clustering

Blocking Detection of Underground Drainage Pipe Based on CEE...

引用

第30届中国控制与决策会议

作者： ZHU Xuefeng FENG Zao HUANG Guoyong Faculty of Information engineering & Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation

Regarding the difficulties in detecting the partial blockage in underground drainage pipeline and the degree of blocking, a novel method based on CEEMD and GG clustering is proposed in this paper. Firstly, the acoustical pressure signals collected from the pipeline were calculated to obtain the sound pressure level data, which were then decomposed by the complete ensemble empirical mode decomposition（CEEMD）,the first 4 IMF components which selected by the Pearson’s correlation coefficient and their energy proportion were extracted and will be used as the clustering features. Finally, the principle component analysis（PCA） was adopted to proceed the dimensionality reduction onto the feature vectors, and the GG（Gath-Geva） algorithm was applied to cluster the feature vectors into classes and to further identify the blocking conditions. The experiment results have suggested that the proposed method is capable of identifying partial blockage conditions of drainage pipeline in different degrees, and presents a certain value for the engineering applications.

关键词： Underground Drainage pipeline Blockage Identification Complete Ensemble Empirical Mode Decomposition Clustering Analysis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chattering Avoidance High Order Sliding Mode Control for BDFM

Chattering Avoidance High Order Sliding Mode Control for BDF...

引用

第26届中国控制与决策会议

作者： Zhongrong Duan Guoyong Huang Zongkai Shao Jiande Wu Xiaodong Wang Faculty of Information engineering and Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation YN

Aiming at the chattering problem of sliding mode control systems for brushless double-fed machines（BDFM）, a control strategy named as high order sliding control with chattering avoidance is presented. A feedback linearization technology was adopted for the nonlinear model of BDFM. The results show that compared with traditional sliding mode control, high order sliding control can remove system chattering and enhance the dynamic performance of the control systems. The experiment results verify the feasibility and effectiveness of the proposed strategy.

关键词： BDFM high order sliding mode control chattering avoidance decoupling

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

research on Fault Diagnosis Method Based on ITD ＆ MED

Research on Fault Diagnosis Method Based on ITD ＆ MED

引用

第30届中国控制与决策会议

作者： Hongmei Zhang Jinhui Zou Faculty of Information engineering & Automation Kunming University of Science and Technology engineering research center for mineral pipeline transportation.YN

In order to extract the fault characteristics of rolling bearing from complex operating conditions,a fault diagnosis method is proposed based on Intrinsic Time-scale Decomposition（ITD） and Minimum Entropy Deconvolution（MED）.Firstly,by applying ITD to decompose vibration signals,a great deal of Proper Rotation（PR） shall be *** those PR containing the most fault information shall be used for signal restructure based on the kurtosis *** with the use of MED,the restructured signals are able to be reduced and the impact features of those signals shall be ***,the Teager energy operator has been used to calculate the deduction of noise reduction signal and to draw the Teager energy spectrum which can identify the fault features of roll *** the adaptation of this method for fault diagnosis of the rolling bearing,the experimental results have verified the effectiveness of the method.

关键词： Rolling bearing Minimum entropy deconvolution ITD Teager energy operator Fault diagnosis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：