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To solve the distribution network minimum loss reconfiguration problem, we propose an improved dynamic multi-swarm particle swarm optimization (DMS-PSO) in this study. In this method, a set-based updating strategy is introduced to solve the combination problem and a neighborhood's learning strategy is combined to improve the algorithm's local search ability. In addition, to address topological infeasible...
Design of product maintainability, involving analysis, verification, and training, can be pre-conducted with the aid of virtual environment — virtual maintenance. Unlike non-immersive virtual simulation, immersive virtual simulation offers a more realistic and effective path for maintainability design. However, in the current maintenance simulation environment, the actions of human beings who act...
Over the past decades, control method of animating virtual human, as a significant aspect of virtual maintenance simulation, has been developing in various directions. However, huge time consumption has always been the kernel problem that severely limits a virtual human to be applied to real applications. In this study, a mixing control method is proposed to overcome the limitation and to efficiently...
Selection and positioning of virtual objects are difficult in man-machine interaction under an immersive virtual environment. Maintenance crew tend to focus on how to select tools appropriately in a virtual maintenance simulation. Currently, maintenance tools are selected in two methods. First, a 3D interaction process is achieved with traditional 2D input devices. Another method involves utilizing...
A proper description of the frequency-dependent seismic amplitude variation versus offset (AVO) responses should consider the effect of both the layered structure of a reservoir and the dispersive and attenuated property of the media in the reservoir. We propose an improved method to seamlessly link the rock physics modeling and the calculation for frequency-dependent reflection coefficients based...
A method integrates case-based reasoning (CBR) with rule-based reasoning (RBR) is developed in this paper. Based on these two artificial intelligence techniques, it is used in the design of maintenance decision system. According to the characteristics and requirements of equipments' health condition, the structure and workflow of health condition-based maintenance decision intelligent reasoning method...
The paper first introduces the actuality of the maintenance support for domestic military aircrafts. Then, we build the maintenance support system of the military aircraft through the technology of PHM. The system is specified and its impacts on maintenance support under PHM are analyzed, the corresponding maintenance support mode is then researched starting from the four kinds of force of the maintenance...
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