Book Chapter-Analysis and Control of Nonlinear Attitude Motion of Gravity-Gradient Stabilized Spacecraft via Lyapunov-Floquet Transformation and Normal Forms

Here is a recent book chapter I wrote that is available for download free of charge. http://mts.intechopen.com/articles/show/title/analysis-and-control-of-nonlinear-attitude-motion-of-gravity-gradient-stabilized-spacecraft-via-lyap

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Center Manifold Reduction of Nonlinear Dynamics With External Periodic Excitations

In this new article, we present a straightforward approach to accomplish model order reduction on the invariant center manifold for large-dimensional nonlinear systems subjected to external periodic excitations. This relatively plain and direct approach is applicable to both parametrically excited and constant coefficient nonlinear systems. Our approach is powerful because it is liberated from typical […]

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Simplifying Nonlinear Systems With External Periodic Excitation

In my latest article, we present a powerful direct approach to simplify complexly structured nonlinear systems with external periodic excitation via normal forms. This approach is liberated from special treatment of nonlinear systems such as ‘book-keeping’ parameters, detuning parameters etc. It does not mandate the system to be minimally excited and the system may possess […]

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Control of nonlinear spacecraft attitude dynamics

In my latest journal article I have a mouthwatering treat in; gravity gradient attitude stabilization, periodic nonlinear spacecraft attitude dynamics, Chebyshev polynomials, Hopf bifurcation, sliding mode control, Lyapunov-Floquet transformation, Normal Forms, system state augmentation etc. The article titled ” Control of Nonlinear Spacecraft Attitude Motion via State Augmentation, Lyapunov-Floquet Transformation and Normal Forms ” is […]

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African Space Policy

After a protracted process stretching beyond 5 years, the African Union (AU) Space Working Group delivered the African Space Policy document late last year (African Space Strategy V10_1). This document was subsequently adopted by African education, science and technology  ministers and is expected to be approved by the AU Heads of States Summit in January 2016. This is […]

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