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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
ISSN : 25024752     EISSN : 25024760     DOI : -
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Articles 103 Documents
Search results for , issue "Vol 12, No 3: March 2014" : 103 Documents clear
Study on View-Oriented Navigation Modeling of Web Applications Buye Lou
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 3: March 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

This paper presents view-oriented navigation modeling (VONM), a system analysis method and tool for web applications. Firstly, the view was discussed as a navigation node. The view is dynamic and hierarchical. The dynamic characteristic means that a view may render varied objects and state data of an object is changeable. The hierarchy of the view refers to the feature that a more abstract view may be refined to produce several more concrete views. Then, the paper analyzed the classification and the features of navigation. Non-action navigation is the navigation in the traditional sense. Action navigation is also navigation, but its primary purpose is to perform a specific data processing. In this work, the model is made up of view diagrams, navigation diagrams and specification cards for view or navigation. Finally, the paper introduced some navigation implement patterns for the action navigation. DOI : http://dx.doi.org/10.11591/telkomnika.v12i3.4522
Strength Design on Permanent Magnet Rotor in High Speed Motor Using Finite Element Method Tao Zhang; Xiaoting Ye; Huiping Zhang; Hongyun Jia
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 3: March 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

The permanent magnets can be damaged for the tremendous centrifugal stress when the permanent magnet rotor rotates in high-speed. In this paper, the mechanical strength of high-speed permanent magnet rotor was researched. Stability operation mechanical conditions of the surface-mounted permanent magnet rotor were analyzed. The mathematical model between the shrink range of bandage and the maximum operating speed were concluded. The strengths of two kinds of surface-mounted permanent magnet rotors were calculated and compared using contact finite element method. For buried type permanent magnet rotor, the equivalent ring method was put forward to calculate its stress limit. The mathematical relationships between the maximum velocity and iron bridge thickness has been deduced. Using finite element method, the stress distributions was analyzed. The research results have shown that the high speed permanent magnet rotors designed according to the method proposed here had the adequate mechanical strength. DOI : http://dx.doi.org/10.11591/telkomnika.v12i3.4675
Application of SPM to Detect the Wind Turbine Bearing Fault Ruifeng Yang; Jianshe Kang; Xinghui Zhang; Hongzhi Teng; Haiping Li
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 3: March 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

With the widespread application of wind turbines, the Maintenance issue gets growing concern. Bearings play a critical role in industrial applications. It is necessary to effectively monitor their health status. The shock pulse method (SPM) can detect the incipient fault of bearings and prevent the fault consequence effectively. However, many researchers used laboratory data to validate the SPM. This paper mainly concentrates on the SPM application on bearing fault detection of wind turbines. Shock pulse signals are derived from the gearbox of industrial wind turbine test rig by SPM instrument. According to frequency spectrum analysis, the bearing fault has been accurately detected and located. The analysis results demonstrate that the SPM technology is potentially effective for detecting the bearing faults of industrial wind turbines. DOI : http://dx.doi.org/10.11591/telkomnika.v12i3.4122

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