Anastasios K. Boglou

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∗ Aristotle University of Thessaloniki, School of Agriculture, Department of Hydraulics, Soil Science and Agricultural Engineering, Laboratory of Agricultural Engineering, P.O. Box 275, 540 06 Thessaloniki, GREECE. (e-mail: karvan@agro.auth.gr) + University of Athens, Department of Mathematics, Section of Mathematical Analysis, Panepistimiopolis 15784,(More)
In this paper, a new -control technique is proposed, in order to attenuate changes in the prime mover torque which degrade the performance of synchronous electric machines. The proposed technique relies on multirate-output controllers. Its main feature consists in reducing the original problem, to an associate discrete -control problem for which a(More)
In this paper an optimal control strategy, is used to design a desirable excitation controller of a hydrogenerator system, in order to enhance its dynamic stability characteristics. The proposed control strategy based on Two-Point-Multirate Controllers (TPMRCs) is readily applicable in cases where the state variables of the controlled plant are not(More)
This paper presents a new approach for tuning three-term control loops encountered in power station processes. The proposed approach is based on the Pseudo-Derivative Feedback (PDF) control configuration. Simple methods are presented for tuning the PDF controller for dead-time processes. The methods are based on appropriate manipulations of the exponential(More)
In this paper, the sixteen plants theory (SPT) is applied to a hydrogenerator system model, which incorporates parametric uncertainty, in order to design a robustly stabilizing PI controller, which enhances the stability characteristics of the plant over a variety of ope-rating points. Key-Words: Power systems, parametric uncertainty, robust stabilization,(More)
Land cover is a fundamental variable of the Earth's system intimately connected with many parts of the human and physical environment. Recent advances in remote sensor technology have led to the launch of spaceborne hyperspectral remote sensing sensors, such as Hyperion. The present study is exploring the potential of Hyperion hyperspectral imagery combined(More)
Abstract: In the present work an H -control technique is presented and applied to the design of optimal multirate-output controllers. The technique is based on multirate-output controllers (MOCs) having a multirate sampling mechanism with different sampling period in each measured output of the system. The proposed technique relies on multirate-output(More)
After its original formulation in [1], the H ∞-optimization problem has drawn great attention (see e.g. [2]-[12] and the references cited therein). Several approaches have been reported in order to solve this important design problem for a variety of systems types. In particular, the H ∞-control problem for discrete-time and sampled-data singlerate and(More)