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In this paper, we investigate the nonlinear control problem for multi-agent formations with communication delays in noisy environments and in directed interconnection topologies. A stable theory of stochastic delay differential equations is established and then some sufficient conditions are obtained based on this theory, which allow the required formations to be gained at exponentially converging...
Coal-bed methane (CBM), as an increasingly promising resource for the energy supply, deserves further exploration and accurate reservoir evaluation. It is also required to dynamically monitor the reservoirs (>200 m). Remote sensing methods in regular wavebands may fail in the depth sounding, with only imaging geo-objects shallower than 100 m. In contrast, the Super-Low Frequency (SLF) remote sensing...
The smart grid initiative requires self-healing distribution systems with more accurate fault detection and classification techniques. A multi-sensor feeder-level fault detection and classification algorithm is presented in this work, based on the techniques of the support vector machine and the principal components. An IEEE 34-bus feeder model with dynamic loading conditions is used to evaluate the...
The buried faults are widespread in the coal-bed, which result in great difficulties in the construction work. In this paper, an integrated method is used in coal-bed in order to detect and analyze the characteristics of buried faults. Firstly, the lineaments are interpreted by visual interpretation from the ETM+ image, and several lineaments enriched areas are picked up. Secondly Super-Low Frequency...
Mutual information based matching-suitable features are studied in this paper, for the selection of good matching areas with high success probability in SAR matching aided navigation system. Based on the analysis of SAR imaging and multi-source matching, four feature constructing guide lines are proposed first. Then ten candidate features are designed under mutual information measurement. Effectiveness...
Along with the country's 11th Five-Year energy saving and emission reduction targets been formulated, it is necessary to explore the way of "resource-conserving and environment-friendly" about coal-fired boiler. In this paper, waste gas, wastewater, noise and solid waste pollution control system transformation of coal-fired boiler of Qingdao LongFa thermoelectric limited company were analyzed...
Due to the heavy calculation and low estimation precision with little signal-to-noise (SNR) of MUSIC (multiple signal classification) algorithm in partial discharge location used ultrasonic phased array, in this paper, a new location method is proposed based on root-multiple signal classification (Root-MUSIC). Firstly, Root-MUSIC algorithm is used for direction of arrival estimating of PD source....
The precise PD locating in power transformer can provide scientific information and guidance for its state maintenance. Due to the low resolution and estimation precision of MUSIC algorithm in PD locating used ultrasonic phased array, in this paper, a new locating method is proposed based on modified multiple signal classification (MMUSIC). Firstly, MMUSIC algorithm is used for direction of arrival...
The neighborhood structure of a pixel in an image can be described more accurately by its two principal curvatures than its gradient or mean curvature-based estimation. Based on this idea, we propose a novel method - minimum principal curvature-driven diffusion, in which the two principal curvatures are used in a curvature-driven diffusion equation for image filtering. The main advantage of the proposed...
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