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In this paper, we propose an optimization methodology to find the optimal topology for the data communication network in distributed frequency control of power system. In order to implement a distributed cooperative control scheme, local controllers often share their data over a data communication network. Structure of this network has a major role in determining stability of secondary cooperative...
Tree-type hierarchical organizations are ubiquitous in human relationships, especially in social networks connected by a variety of information-rich ties among a population of individuals. In this paper, we consider a continuous-state susceptible-infected-susceptible (SIS) model, where individuals possess fractions of the information and update them by exchanging messages with their neighbors in the...
This paper proposes the criteria of choosing the optimal Gabor filter and uses the optimal Gabor filter to detect defections for glass fiber clothes. On one hand, by using eight direction templates which replace the filters' eight directions the authors zehong chen and xiaoxia feng have choosed two optimal orientations. However, we just choose one optimal orientation by computing the maximum of the...
In this paper, we investigate material perturbation as a means to introduce frequency reconfigurability into microstrip patch antennas (MPAs) and Multiple-Input Multiple-Output dielectric resonator antennas (MIMO DRAs). A detailed analysis via eigenvalue perturbation has been carried out to determine the optimal material perturbation placement for maximum frequency agility. The results obtained agree...
In this paper we present an analytical tool that has the promise to provide rather efficient computational solutions to a wide variety of control problems, in which the system under consideration depends on a continuously varying parameter. Notable examples in this category include time-delay and polynomially dependent systems. The approach, which appears to be conceptually appealing and computationally...
This paper provides an eigenvalue perturbation result and applies it to the estimation of stability margins for uncertain, linear, discrete-time systems. An upper bound on the norm of a real perturbation maintaining the stability of a given asymptotically stable matrix is computed. It is shown that some other existing unstructured bounds are obtained as particular cases of the estimated stability...
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