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Evolutionary algorithms are an important branch of soft computing, being able to provide approximate solutions to problems in a reasonable amount of time. The underlying principle can be realized in an almost unlimited number of ways. This paper presents four main variants of evolutionary algorithms, and a method of running them in a topology consisting of multiple populations. The resources given...
The topology optimization of YKS5120B-3 NC gear shaper machine tool bed is completed based on ANSYS with the shape envelope of the whole tool bed as solution domain and the minimum static compliance as objective function. The optimal topology model of the tool bed is obtained. And then the tool bed model is reconstructed in Pro/E and re-tested by static and dynamic analysis in ANSAYS. The re-tested...
In this paper, we present a novel application of matrix game theory for optimization of link scheduling in wireless ad-hoc networks. Optimum scheduling is achieved by soft coloring of network graphs. Conventional coloring schemes are based on assignment of one color to each region or equivalently each link is member of just one partial topology. These algorithms based on coloring are not optimal when...
A joint power system state and topology estimator based on a combined Weighted Least Squares (WLS) and Weighted Least Absolute Value (WLAV) strategy is proposed. The resulting coestimation algorithm is devised to simultaneously provide estimates to the analog power system variables and validate the current topology of the electric network. This is accomplished by formulating state & topology coestimation...
Optimization problem of flight sequencing on the ground of airport with multi-taxiway and multi-runway is resolved based on gene expression algorithm, and a standard algorithm of aircraft approach sequencing for airports with any topology structure in theory is approved. Based on an actual airport ground operation situation, a standard algorithm for the two runways of this airport is provided. Compared...
This paper analyzes the rate of convergence of a distributed averaging scheme making use of memory at each node. In conventional distributed averaging, each node computes an update based on its current state and the current states of their neighbours. Previous work observed the trajectories at each node converge smoothly and demonstrated via simulation that a predictive framework can lead to faster...
Piezoelectric sensor generates analog voltage signal in response to the applied force. The larger the output analog voltage under the same loading condition, the better the piezoelectric force sensor design because of its higher sensitivity. In this paper, topology optimization method is applied to design PZT plate force sensor. Problem formulation for this problem is given, in which a stiffness constraint...
This paper proposes a new topology optimization method for the structural design of antennas, based on time-domain analysis using the FDTD method. First, the concept of the topology optimization and the way of integrated the topology optimization and the FDTD method are explained. Then, DRA design example is presented in order to confirm the usefulness of the proposed method
A good online catalog is crucial to the success of an e-commerce web site. Traditionally, an online catalog is mainly built by hand. To what extent this can be automated is a challenging problem. Recently, there have been investigations on how to reorganize an existing online catalog based on some criteria, but none of them has addressed the problem of organizing an online catalog automatically from...
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