The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A machine fault diagnosis method using industrial wireless sensor networks (IWSNs) and support vector machine (SVM) is presented in this paper as a potential low-cost and effective solution for device condition monitoring and fault diagnosis. On sensor node SVM is proposed and researched to reduce the data transmission between sensor nodes, decrease node energy consumption and increase the fault diagnosis...
To research magnetic field distribution and no load characteristic of flux-switching permanent magnet machine (FSPM), the basic structure of FSPM and its operating principle were presented. Flux-linkage, back-electromotive force and torque of 12/10-pole FSPM were analyzed by three-dimensional finite element (3D-FEM) to build a full region physical model. The calculated results show that FSPM produces...
Through the research of the impact on the value of operation of wind power by investment cost and environmental benefits, we can draw the following conclusions: Based on coal-fired thermal power pollutants emission rate and contaminants based on environmental values, if we want to have 500MW of installed capacity of wind power compared to thermal, The environmental value is 0.09548 yuan·kWh-1, the...
ZnO is a wide band gap piezoelectric semiconductor material with large electromechanical coupling, which has great potential for photoelectronics devices, acoustooptic devices and SAW devices. In this paper, ZnO films were deposited on diamond substrates by RF magnetron sputtering, while the depositing and annealing parameters of ZnO film were optimized. High-purity (99.999%) ZnO target, O2 and Ar...
In this paper, ZnO thin films were deposited on SiO2/Si (100) substrates by radio frequency magnetron sputtering using high purity (99.999%) ZnO target, grown time was 2 h, 4 h and 8 h respectively. After annealing in pure oxygen atmosphere, high-quality ZnO thin film was obtained. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) were employed to characterize the quality of the films...
Land-use changes of oases city in Xinjiang played a significant role in the ecological stability and economic development of the arid regions in the Central Asia. Urumqi was a typical oasis city of the temperate zone in the Northern Slope Economic Zone of Tianshan Mountain. Based on Landsat MSS of 1972, Landsat TM of 1990 and 2006, it got three periods of land- use data and six land-use types (cropland,...
ZnO is a wide band gap semiconductor material and has a large electromechanical coupling coefficient. ZnO has great potential for photoelectronic devices, acousto-optic devices and SAW devices. In this paper, ZnO films were deposited on quartz substrates by RF magnetron sputtering, with depositing and annealing parameters optimized through the orthogonality method. High-purity (99.999%) ZnO target,...
In this paper, a very detailed finite element model of PCB board and BGA package was constructed. A dynamic drop/impact simulation of the board-level package was conducted by LS-DYNA and Input-G approach under the drop Condition H recommended by JEDEC standard JESD22-B111. A PCB deflection equivalent static analysis was conducted also in order to investigate the difference of peeling stress between...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.