Modelica is an object-oriented language for modeling of large and heterogeneous physical systems. Typical applications include mechatronic models in automotive and aerospace applications involving mechanical, electrical and hydraulic subsystems as well as control systems. Modeling of an ideal diode and Coulomb friction is discussed to illustrate the unique hybrid features of Modelica. The langu...

We present a neural-network method to recalibrate automatically a commercial robot after undergoing wear or damage, which works on top of the nominal inverse kinematics embedded in its controller. Our starting point has been the work of Ritter et al. (1989, 1992) on the use of extended self-organizing maps to learn the whole inverse kinematics mapping from scratch. Besides adapting their approa...

Two species of microcolonial fungi - Cryomyces antarcticus and Knufia perforans - and a species of black yeasts-Exophiala jeanselmei - were exposed to thermo-physical Mars-like conditions in the simulation chamber of the German Aerospace Center. In this study the alterations at the protein expression level from various fungi species under Mars-like conditions were analyzed for the first time us...

Abstract: In this paper, we present the implementation of a homography-based visual servo controller as introduced in (Hu et al., 2006). In contrast to other visual servo controllers, this formulation uses a quaternion representation of the rotation. By doing so, potential singularities introduced by the rotational matrix representation can be avoided, which is usually a very desirable property...

The power and speed of modern digital computers is truly astounding so that it enables carrying on complex tasks such as aerospace simulation, design and analysis, precisely. In addition to the nature of the guidance problem, the design technique, neural networks, necessitates cumbersome computations to yield precise and accurate performance. Neural networks approach the solution of this proble...

Distinctive technology and customer / supplier relationships are currently the primary sources of competitive advantage in the Aerospace industry. Modular Open System Architecture (MOSA) requirements represent a significant disruption to this mode of competition. The United States Department of Defense intends to accelerate the rate of aerospace innovation and inject additional competitiveness ...

G. Kerschen , A. F. Vakakis*, Y. S. Lee , D. M. McFarland c and L. A. Bergman c a Aerospace and Mechanical Engineering Department (LTAS), University of Liege, Liege, Belgium b School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Athens, Greece, and Departments of Mechanical Science and Engineering and Aerospace Engineering, University of Illinois, Urban...

This Article is brought to you for free and open access by the Mechanical & Aerospace Engineering at ODU Digital Commons. It has been accepted for inclusion in Mechanical & Aerospace Engineering Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Wilkins, Christine A. and Ash, Robert L., "An...

Microstructural designs of platetype elastic metamaterial and their potential applications: a review R. Zhu, X.N. Liu, G.K. Hu, F.G. Yuan & G.L. Huang a Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA b School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, People’s Republic of China c Department of Mechanica...