monitoring earth fault detection
Lenze8200 Vector Data code table
Ngày tải lên :
09/10/2015, 05:46
... 7.8.1.2 PTC motor monitoring/ earth fault detection 7.8.2 Fault detection (DCTRL1-TRIP-SET/DCTRL1-TRIP-RESET) ... Thermal motor monitoring, fault detection 7.8.1 Thermal motor monitoring 7.8.1.1 I2 x t monitoring ... possible, if the controller is protected in the event of an earth fault in the supplying mains l by suitable equipment for detecting an earth fault and l the controller is directly disconnected from...
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Lenze 8200 vector data code table
Ngày tải lên :
09/10/2015, 06:31
... 7.8.1.2 PTC motor monitoring/ earth fault detection 7.8.2 Fault detection (DCTRL1-TRIP-SET/DCTRL1-TRIP-RESET) ... Thermal motor monitoring, fault detection 7.8.1 Thermal motor monitoring 7.8.1.1 I2 x t monitoring ... possible, if the controller is protected in the event of an earth fault in the supplying mains l by suitable equipment for detecting an earth fault and l the controller is directly disconnected from...
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ADAPTIVE FAULT DETECTION AND CONDITION MONITORING OF INDUCTION MOTOR
Ngày tải lên :
26/09/2015, 10:59
... on broken rotor bar fault detection, ACWT is further extended for bearing fault detection in Chapter Unlike the previous success, ACWT reveals its weakness in bearing fault detection Two reasons ... rotor bar fault and bearing fault, and their current signature analysis are studied After the introduction of general concepts of these two faults, the two cases of faults: broken rotor bar fault ... for fault detection under various operating conditions because of the dependency of motor fault feature on the operating condition Most of the papers limit their scopes to specific motor fault detection...
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filtering control and fault detection with randomly occurring incomplete information
Ngày tải lên :
24/04/2014, 15:12
... and Fault Detection for Markov Systems with Varying Nonlinearities Problem Formulation for Robust H∞ Filter Design Performance Analysis of Robust H∞ Filter Design of Robust H∞ Filters Fault Detection ... 115 115 118 122 122 124 127 137 138 6.1 6.2 Quantized Fault Detection with Mixed Time-Delays and Packet Dropouts Problem Formulation for Fault Detection Filter Design Main Results 139 140 143 5.1 ... investigates the robust H∞ filtering and fault detection problems for nonlinear Markovian jump systems with sensor saturation and RVNs In Chapter 6, the fault detection problem is considered for two...
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![[Khiem] improvement of matrix converter drive reliability by online fault detection and a fault tolerant switching strategy IEEE trans](https://media.store123doc.com/images/document/14/y/ib/medium_ibr1399917315.jpg)
[Khiem] improvement of matrix converter drive reliability by online fault detection and a fault tolerant switching strategy IEEE trans
Ngày tải lên :
13/05/2014, 00:55
... proposed both a fault- detection method and a postfault modulation strategy in an attempt to completely solve the fault tolerance issue However, continuous operation from the instant of fault detection ... suitable value for the fault indicator J_f ault and branches to one of the nine remedial switching strategies C Second Stage of Fault Detection In the second stage of the fault detection, the exact ... current and voltage in the presence of a fault are analyzed to derive an algorithm to detect the fault location [15]–[19] Most algorithm-based fault- detection methods have been devoted to VSI-based...
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báo cáo hóa học: " Fault detection for hydraulic pump based on chaotic parallel RBF network" docx
Ngày tải lên :
21/06/2014, 00:20
... (e-006) Fault (e-004) Data Normal Normal Fault Fault Fault Fault Fault Fault Variance 3.0529 4.7796 1.3400 1.2244 1.0634 1.0831 2.6596 2.5383 Mean of variance 3.91625 1.651467 fault detection ... with wear fault between swash plate and slipper of hydraulic pump were used for fault detection Figure 13 shows the residual error of wear fault between swash plate and slipper Fault detection ... different types of faults might represent the same fault form, accordingly, the proposed method is not suitable for performing fault location but for conducting condition monitoring Further work...
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Báo cáo hóa học: "Bearing Fault Detection Using Artificial Neural Networks and Genetic Algorithm" pdf
Ngày tải lên :
23/06/2014, 01:20
... Bearing Fault Detection Using ANN and GA [3, 19, 20, 21] In [19], a procedure was presented for condition monitoring of rolling element bearings comparing ... classification error was in the failure to recognize a fault, termed as fault- not-recognized (FNR) which may suggest the overlap of the features of faulty bearings to that of normal bearings The performance ... investigate the separability of the data sets with and without bearing fault, three features selected by GA were Bearing Fault Detection Using ANN and GA 375 Table 7: PNN performance with six selected...
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Fault detection and correction modeling of software systems
Ngày tải lên :
11/09/2015, 16:06
... the fault correction process to be related to the fault detection process as a fault can only be removed after its detection The fault correction process can be assumed to be a delayed fault detection ... sub-processes: fault- detection, fault correction, and fault introduction Analytical models assume perfect and immediate fault correction Data-driven models only analyze the historical data from the fault detection ... correct the detected fault We consider there is a time delay between fault correction and fault detection; therefore, the fault correction process can be modeled as a delayed fault detection process...
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Fault detection and isolation with estimated frequency response
Ngày tải lên :
12/09/2015, 11:35
... successful fault detection of a fault is followed by the fault isolation procedure which will isolate a particular fault from others While a single residual signal is sufficient to detect faults, ... of fault detection and isolation can now be presented Definition (Fault) A fault is said to have occurred with respect to the nominal parameter vector, θ∗ when ϑ(θ, θ∗ ) = Definition (Fault Detection) ... on Faults of a Process Model 63 5.5 Isolation Rate on Faults of a Process Model 63 6.1 Geometrical Interpretation of Fault Isolation between any Faults 67 6.2 σ1 for faults...
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Applications of multiv ariate analysis techniques for fault detection, diagnosis and isolation
Ngày tải lên :
30/09/2015, 13:49
... Depropanizer Process Fault 10 fault intensity 102 Figure 4.21: Depropanizer Process Fault 10 – Individual significant fault intensity values 102 Figure 4.22: Depropanizer Process Fault 11 fault intensity ... Process Fault 14 – Fault intensity values 106 Figure 4.29: Depropanizer Process Fault 14 – Individual significant fault intensity values 106 Figure 4.30: Depropanizer Process Fault 15 – Fault ... significant fault intensity values 104 Figure 4.26: Depropanizer Process Fault 13 – Fault intensity values 105 Figure 4.27: Depropanizer Process Fault 13 – Individual significant fault intensity...
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Condition monitoring and fault diagnosis of induction machine using artificial intelligence methods and empirical mode decomposition
Ngày tải lên :
03/10/2015, 21:57
... machine fault diagnosis Vibration signatures Motor current signatures Unbalanced Rotor Bar fault Broken Rotor Bar fault Bearing fault Unbalanced Rotor Bar fault Bearing fault Shorted Winding fault ... fault accounted for more than half the total faults, and the second most common fault is the stator related faults These two faults together accounts for more than at least 65% of the total faults ... procedure for any type of faults insensitive to and independent of operating conditions reliable fault detection for position, speed and torque controlled drives reliable fault detection for drives...
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Condition monitoring and fault diagnosis of induction machine using artificial intelligence methods and empirical mode decomposition
Ngày tải lên :
04/10/2015, 07:58
... machine fault diagnosis Vibration signatures Motor current signatures Unbalanced Rotor Bar fault Broken Rotor Bar fault Bearing fault Unbalanced Rotor Bar fault Bearing fault Shorted Winding fault ... fault accounted for more than half the total faults, and the second most common fault is the stator related faults These two faults together accounts for more than at least 65% of the total faults ... procedure for any type of faults insensitive to and independent of operating conditions reliable fault detection for position, speed and torque controlled drives reliable fault detection for drives...
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Fault detection and forecast in dynamical systems
Ngày tải lên :
06/10/2015, 20:50
... actuator faults Simulations will be done on LIP fault and the simulation results will be discussed Fault analysis consists of two stages: fault detection and fault diagnosis In fault detection, ... detection of faults by analysing residuals generated and the isolation of faults In Chapter 3, the methodology used for fault detection and the simulation 12 results will be shown The fault detection ... are used most often for fault detection There is also a growing trend in research in the area of neutral network based method for fault detection The researches on fault detection and diagnosis...
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Applications of multiv ariate analysis techniques for fault detection, diagnosis and isolation
Ngày tải lên :
12/10/2015, 17:34
... Depropanizer Process Fault 10 fault intensity 102 Figure 4.21: Depropanizer Process Fault 10 – Individual significant fault intensity values 102 Figure 4.22: Depropanizer Process Fault 11 fault intensity ... Process Fault 14 – Fault intensity values 106 Figure 4.29: Depropanizer Process Fault 14 – Individual significant fault intensity values 106 Figure 4.30: Depropanizer Process Fault 15 – Fault ... significant fault intensity values 104 Figure 4.26: Depropanizer Process Fault 13 – Fault intensity values 105 Figure 4.27: Depropanizer Process Fault 13 – Individual significant fault intensity...
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Moving PCA for process fault detection a performance and sensitivity study
Ngày tải lên :
26/11/2015, 12:56
... Chapter Fault detection approaches – An overview 1.1 Fault detection – A definition Generally, fault detection is defined as the “determination of the faults present in a system and the time of detection ... effective methods for process monitoring and fault detection Figure 1.1: Transformations in a fault detection system 1.3 Current FDI approaches In general, fault detection and isolation (FDI ) ... any fault detection approach includes detection errors, timely detection, and computational requirements The first criterion is the classification error in fault detection This includes missed detection...
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Neural network approach for sensor fault detection and accommodation
Ngày tải lên :
26/11/2015, 22:57
... The first step for achieving active fault- tolerance is fault detection The successful detection of a fault is followed by fault isolation, which is to locate a faulty component Finally, a reconfiguration ... uncompensated faulty and Difference between fault- free and compensated faulty faulty system output 3.3.3 Dynamic Sensor Fault detection and accommodation using Elman network Most of the time, faults ... the sensor faults Experimental results on a chemical reactor process demonstrate the satisfactory detection and isolation of the sensor faults Due to the weakness of static NN for fault detection...
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TOMAN’S TUBERCULOSIS CASE DETECTION, TREATMENT, AND MONITORING pdf
Ngày tải lên :
15/03/2014, 03:20
... Deun, and the overall assistance of Dr F Luelmo xviii Case detection 1 What is the role of case detection in tuberculosis control?1 F Luelmo2 Detection of the most infectious cases of tuberculosis ... GENEVA 2004 WHO Library Cataloguing-in-Publication Data Toman’s tuberculosis case detection, treatment, and monitoring : questions and answers / edited by T Frieden – 2nd ed 1.Tuberculosis, Pulmonary ... agents – pharmacology I.Toman, Kurt II.Frieden, Thomas R III.Title: Tuberculosis case detection, treatment, and monitoring ISBN 92 154603 (NLM classification: WF 360) WHO/HTM/TB/2004.334 © World Health...
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Security Monitoring: Proven Methods for Incident Detection on Enterprise Networks ppt
Ngày tải lên :
22/03/2014, 21:20
... targeted monitoring) from malware monitoring, intrusion detection, extrusion detection, and popular monitoring frameworks Policy-based monitoring prioritizes monitoring by enumerating and selecting ... Wireless 6 7 8 9 9 10 Implement Policies for Monitoring 11 Blacklist Monitoring Anomaly Monitoring Policy Monitoring Monitoring Against Defined Policies Management ... network for focused monitoring We haven’t coined a term for this, but if we did, it would be targeted monitoring or policy-based monitoring or targeted reality-based policy monitoring for detecting...
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Báo cáo hóa học: " Research Article Adaptive Parameter Identification Based on Morlet Wavelet and Application in Gearbox Fault Feature Detection" pptx
Ngày tải lên :
21/06/2014, 08:20
... randomized trial on 100 times Application in Gearbox Fault Feature Detection To study the effectiveness of the presented methods for the gearbox fault feature detection, our experiment is concerned with ... identification and feature detection for fault diagnosis Both the parameters of the Morlet wavelet associated with the maximal correlation value and the cyclic period are effective in feature detection of the ... however, it conforms that CMWCF provides a feature detection method for gearbox fault diagnosis Furthermore, the method has the potential applicability for monitoring other rotating mechanical components...
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Detection and resolution enhancement of laser induced fault localization techniques 1
Ngày tải lên :
11/09/2015, 09:58
... 107 5.2 Lock-In Detection 5.2.1 Narrowband Lock-In Detection 111 115 5.2.1.1 DC-Coupled Detection Systems 115 5.2.1.2 AC-Coupled Detection Systems 117 5.2.2 Wideband Lock-In Detection 120 5.2.2.1 ... detection output IP f NB ( o ) dc Narrowband in-phase lock-in detection output for dc-coupled detection system IP f NB ( o ) ac Narrowband in-phase lock-in detection output for ac-coupled detection ... lock-in detection output IP fWB ( o ) dc Wideband in-phase lock-in detection output for dc-coupled detection system IP fWB ( o ) ac Wideband in-phase lock-in detection output for ac-coupled detection...
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