搜索结果: 1-15 共查到“工学 fault diagnosis”相关记录20条 . 查询时间(0.047 秒)
FAULT DIAGNOSIS OF ELECTRONIC FUEL CONTROL (EFC) VALVES VIA DYNAMIC PERFORMANCE TEST METHOD
System Modeling System Identification Fuzzy Logic Fault Diagnosis Electronic Fuel Control Valve EFC
2015/1/20
Electronic Fuel Control (EFC) valve regulates fuel flow to the injector fuel supply line in the Cummins Pressure Time (PT) fuel system. The EFC system controls the fuel flow by means of a variable ori...
Fault diagnosis of lithium ion battery using multiple model adaptive estimation
Kalman filter Extended Kalman filter Lithium Ion Fault probabilities
2015/1/12
Lithium ion (Li-ion) batteries have become integral parts of our lives; they are widely used in applications like handheld consumer products, automotive systems, and power tools among others. To extra...
Fault diagnosis and comparing risk for the steel coil manufacturing process using statistical models for binary data
Generalized linear models Generalized additive models ROC curve Bootstrapping
2012/4/22
Advanced statistical models can help industry to design more economical and rational investment plans. Fault detection and diagnosis is an important problem in continuous hot dip galvanizing. Increasi...
Fault Diagnosis Method based on System-Phenomenon-Fault Tree
System-Phenomenon-Fault Tree Fault Analysis
2011/8/4
The historical records of mechanical fault contain great amount of important information which is useful to identify the similar fault. The current fault diagnosis methods using historical records are...
Mechanical Fault Diagnosis Based on Band-Phase-Randomized Surrogate Data and Multifractal
fault diagnosis Band-Phase-Randomized surrogate data
2011/8/4
The vibration signals of machinery with various faults often show clear nonlinear characteristics. Currently, fractal dimension analysis as the common useful method for nonlinear signal analysis is a ...
Fault Diagnosis Model Based on Feature Compression with Orthogonal Locality Preserving Projection
Orthogonal locality preserving projection(OLPP) Manifold learning, Feature compression
2011/8/4
Based on feature compression with Orthogonal Locality Preserving Projection (OLPP), a novel fault diagnosis model is proposed in this paper to achieve automation and high-precision of fault diagnosis ...
基于经验模态分解和Duffing振子的轴承故障诊断（Fault Diagnosis of Bearing Based on EMD and Duffing Oscillator）
轴承 故障诊断 混沌振子 经验模态分解
2010/12/29
针对齿轮箱轴承振动信号故障信息容易被噪声淹没，且具有非线性、非平稳特性的问题，提出了基于经验模态分解（EMD）和Duffing振子的轴承故障诊断方法。首先对原始振动信号进行经验模态分解，找到包含轴承故障信息的固有模态函数（IMF），然后利用Duffing振子的分岔图找到混沌振子相轨迹发生变化的内部激励力分界值，并将Duffing 振子的内部激励力频率设定为轴承故障特征频率，最后从混沌振子输出相轨迹...
On-line Dynamic Model Correction Based Fault Diagnosis in Chemical Processes
fault diagnosis chemical process dynamic simulation
2009/11/13
A novel fault detection and diagnosis method was proposed, using dynamic simulation to monitor chemical process and identify faults when large tracking deviations occur. It aims at parameter failures,...
温室环境控制系统智能故障诊断（Intelligent Fault Diagnosis on Greenhouse Environment Control System）
温室 控制系统 故障诊断
2009/11/3
分析了温室环境控制系统中执行机构、传感器、控制柜、控制软件的主要故障；根据故障可能对系统造成的损失将故障分为4个级别，并提出了相应的处理策略，编制了完整的智能故障诊断软件。试验结果表明，故障诊断识别正确，系统运行可靠。
A Prototype of Knowledge-Based System for Fault Diagnosis in Automatic Wire Bonding Machine
Semiconductor industry Automatic wire bond machine Knowledge-based system Troubleshooting
2009/9/30
In the modern world, computing is essential in all aspects of manufacturing activity. Computers have brought to life terms like artificial intelligence, and have played a critical role in reinvention ...
Decentralized Fault Diagnosis of Large-Scale Processes Using Multiblock Kernel Principal Component Analysis
Multiblock kernel methods Nonlinear Component Analysis Process Monitoring Fault detection
2009/9/9
In this paper, a multiblock kernel principal component analysis (MBKPCA) algorithm is proposed. Then a new fault detection and diagnosis approach based on MBKPCA is proposed to monitor large-scale pro...
A Method for Designing Fault Diagnosis Filters for LPV Polytopic Systems
Method Designing Fault Diagnosis Filters LPV Polytopic Systems
2009/9/7
The work presented in this paper focuses on the design of robust Fault Detection and Isolation (FDI) filters for dynamic systems characterized by LPV (Linear Parameter Varying) polytopic models. A suf...
Actuator Fault Diagnosis with Robustness to Sensor Distortion
Actuator Fault Diagnosis Robustness Sensor Distortion
2009/9/7
Actuator fault diagnosis is often studied under strong assumptions on available sensors. Typically, it is assumed that the sensors are either fault free or sufficiently redundant. The purpose of this ...
Design and Analysis of Robust Fault Diagnosis Schemes for a Simulated Aircraft Model
Robust Fault Diagnosis Schemes Simulated Aircraft Model
2009/9/7
Several procedures for sensor fault detection and isolation (FDI) applied to a simulated model of a commercial aircraft are presented. The main contributions of the paper are related to the design and...
Robustness Issues in Fault Diagnosis and Fault Tolerant Control
Robustness Issues Fault Diagnosis Fault Tolerant Control
2009/9/7
Fault diagnosis and fault tolerant control have become critically important in modern complex systems such as aircrafts and petrochemical plants. Since no system in the real world can work perfectly a...