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Simulation of Three-Rate Control for a High-Order Stochastic Model of Boeing B767 AircraftIgor ASTROV
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simulation, multi-rate, models, aircraft control
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About this article
Date of Publication: 2005-04-02
Volume 5, Issue 2, Year 2005, On page(s): 15 - 25
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: Not assigned
Despite perfecting of performances of computers and applied programs the problems of decomposition for high-order stochastic control systems remain actual. This paper presents a decomposition technique for describing a three-rate continuous-time stochastic control system as state-space (SS) models of multi-input/multi-output (MIMO) subsystems. An illustrative example from the aircraft industry - decomposed three-rate control of an aeroelastic MIMO model of 55th order for a modified Boeing B767 airplane at a flutter condition - was carried out using the proposed three-rate SS decomposition technique. The results of decomposition of an original stochastic system on three-rate autonomous subsystems are tested with the help of the block diagrams of functioning for the given original control system with single linear-quadratic-Gaussian (LQG) controller and for three-rate control system with three proportional-integrating (PI) controllers. This example demonstrates that the research technique results in simplified low-order MIMO autonomous subsystems with low-order PI controllers running at different rates and shows the quality of the proposed technique. The simulation results with use of software package Simulink demonstrate that this research technique would work for real-time MIMO high-order stochastic systems.
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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