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Academic Editor: Alois Steindl Copyright q 2010 J. A. Rod Blais. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In experimental science and engineering, least squares are ubiquitous in(More)
Total production costs show sometimes an S-shaped form. There are several ways in which a plant with given capacity can be adapted to a specific demand rate, one of them being adaptation of intensity per work hour. In this paper we present an application of the Hamilton-Hopf bifurca-tion to an inventory/production intensity splitting model with a nonconvex(More)
We investigate the time-optimal deployment and retrieval of a tethered satellite. In previous investigations ([1,2]) we assumed, that the space station moves on a circular orbit and that the motion of the sub-satellite is restricted to the orbital plane. In this talk we consider the stabilization of the planar configuration and we also consider the case,(More)
—In automotive applications large-scale nonlinear dynam-ical models are utilized for hardware-in-the-loop simulations and model-based controller design. A projection-based order reduction of these models, on the one hand, yields substantial advantages in computational speed and on the other hand, simplifies the controller design procedure. In this work a(More)
We investigate the stabilization of the radial equilibrium of a tethered satellite by tension control, if both in-plane and out-of-plane deviations from the vertical position are taken into account. While in-plane perturbations can be eliminated in finite time, the length rate change of the tether acts as parametric control on the out-of-plane deviations.(More)
A string moving with geostationary angular velocity in its radial relative equilibrium configuration around the Earth, reaching from the surface of the Earth far beyond the geostationary height, could be used as track for an Earth to space elevator. This is an old dream of mankind, originating about 100 years ago in Russia. Besides the question of(More)
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