This paper presents the implementation of an adaptive control approach to ball and beam system (BBS). The dynamics a BBS are non-linear, in implementation, uncertainty system's parameters may occur. In this research, linear state-feedback model reference (MRAC) is used synchronize states with given model. research investigates performance MRAC method for that applied non-linear or BBS. order ge...

The collision of a ball with a baseball bat or a tennis racket is usually modeled in terms of rigid body dynamics, assuming that the hand exerts no impulsive reaction force on the handle during the collision. In this paper, a uniform aluminum beam was used as an idealized bat or racket, in order to examine both the rigid body approximation and the assumption that the hand force can be neglected...

We have developed a concept for acceleration of a large phase-space, pulsed muon beam from 190 MeV to 50 GeV as part of a collaborative study of the feasibility of a neutrino factory based on in-flight decay of muons. The muon beam’s initial energy spread was ~20% and each bunch had the physical size of a soccer ball. Production of the muons will be quite expensive, so prevention of loss due to...

We present a design, construction and characterization of different variations of GRIN and ball fiber lenses, which were recently proposed for ultra-small biomedical imaging probes. Those fiber lens modules are made of a single mode fiber and a GRIN or ball fiber lens with or without a fiber spacer between them. The lens diameters are smaller than 0.3 mm. We discuss design methods, fabrication ...

In dieser Arbeit wird die technische Effizienz von Biogasanlagen mit Hilfe der Data Envelopment Analyse bestimmt. Als Datengrundlage dient eine Befragung des KTBL bei deutschen Biogasanlagenbetreibern, die sich auf das Jahr 2004 bezieht. Die Auswertung zeigt deutliche Unterschiede in der Produktivität der Anlagen. Als wesentlicher Einflussfaktor stellt sich die Auslastung heraus. 1 Problemstell...

− div ( |∇up|p−2∇up ) = f in Ω up = 0 on ∂Ω, where p > 1 and Ω is a bounded open set of R (N ≥ 2) with Lipschitz boundary. We analyze the case where Ω is a ball and the datum f is a non-negative radially decreasing function belonging to the Lorentz space LN,∞(Ω) and the case where the datum f belongs to the dual space W−1,∞(Ω). We are interested in finding the pointwise limit of up as p goes to...