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Using aerodynamic force to finish the orbital transfer mission can save a lot of fuels and increase the payload. In this paper, After giving the mathematical description of the Aero-assisted Orbital Transfer(AOT) problem, we discrete it through the Guess-pseudospectral method and then apply SNOPT algorithm to get the optimal state trajectory. After that we do some simplify to original dynamic equations...
This paper presents delay-dependent robust H∞ controller design for a class of uncertain linear systems with a time-varying discrete delay and a constant distributed delay. The parameter uncertainties are assumed to reside in a polytope. Designing a linear memoryless state feedback H∞ controller, and a sufficient condition with delay-dependent is derived for the robust asymptotic stability of the...
In this paper, the problems of stability and stabilization of switched linear discrete-time systems with polytopic uncertainties are investigated. A switched parameter-dependent quadratic Lyapunov function is proposed, by which the stability conditions are derived and formulated in terms of a set of linear matrix inequalities. Based on the stability result, control synthesis is then considered and...
This paper discusses the problem of robust L/sub 1/ filtering with pole constraint in a disk for linear continuous polytopic uncertain systems. The attention is focused on the design of full-order and reduced-order filters with suitable dynamic behavior via parameter-dependent Lyapunov functions such that the filtering error system remains robustly stable, and has a guaranteed L/sub 1/ performance...
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