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- AG-RESY (2)
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- Force-Torque (1)
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We present a system concept allowing humans to work safely in the same environment as a robot manipulator. Several cameras survey the common workspace. A look-up-table-based fusion algorithm is used to back-project directly from the image spaces of the cameras to the manipulator?s con-figuration space. In the look-up-tables both, the camera calibration and the robot geometry are implicitly encoded. For experiments, a conven-tional 6 axis industrial manipulator is used. The work space is surveyed by four grayscale cameras. Due to the limits of present robot controllers, the computationally expensive parts of the system are executed on a server PC that communicates with the robot controller via Ethernet.
This paper deals with the handling of deformable linear objects (DLOs), such as hoses, wires or leaf springs. It investigates the a priori knowledge about the 6-dimensional force/torque signal for a changing contact situation between a DLO and a rigid polyhedral obstacle. The result is a complete list, containing for each contact change the most significant combination of force/torque signal components together with a description of the expected signal curve. This knowledge enables the reliable detection of changes in the DLO contact situation and with it the implementation of sensor-based manipulation skills for all possible contact changes.
In der empirischen, fragebogengestützten Analyse wurde die Nutzung von zweck- und prozeßbezogenen Unterstützungspotentialen des Internet von umweltberichterstattenden Unternehmen in Deutschland untersucht. Die Analyse ist in drei Kapitel gegliedert: Zur thematischen Einführung wird die Umweltberichterstattung von Unternehmen im Internet skizziert (Kapitel 2). Als Systematik von internetbasierten Unterstützungspotentialen zur Umweltberichterstattung wird eine vierteilige Gliederung zugrunde gelegt. Sie enthält inhalts-, darstellungs-, zweck- und prozeßbezogene Unterstützungspotentiale. An die Systematik schließt sich eine Darstellung der Forschungssituation zur Umweltberichterstattung, insbesondere zu der im In-ternet, an (Kapitel 3). Damit ist die Basis für die eigens in 2000 durchgeführte empirische Analyse gelegt (Kapitel 4). Die Untersuchungsergebnisse umfassen - neben der Darlegung der Untersuchungsmethodik (Abschnitt 4.1) - die empirischen Befunde zu folgenden spezifischen Fragenbereichen: Allgemeines zu Internet-Umweltberichten (Abschnitt 4.2), Information der Öffentlichkeit (Abschnitt 4.3), Kommunikation mit Zielgruppen (Abschnitt 4.4), Integration von Internet-Umweltberichten in die Unternehmenskommunikation (Abschnitt 4.5), Transparenz durch Internet-Umweltberichte (Abschnitt 4.6) sowie Erstellung von Internet-Umweltberichten (Abschnitt 4.7).
A harmonic oscillator subject to a parametric pulse is examined. The aim of the paper is to present a new theory for analysing transitions due to parametric pulses. The new theoretical notions which are introduced relate the pulse parameters in a direct way with the transition matrix elements. The harmonic oscillator transitions are expressed in terms of asymptotic properties of a companion oscillator, the Milne (amplitude) oscillator. A traditional phase-amplitude decomposition of the harmonic-oscillator solutions results in the so-called Milne's equation for the amplitude, and the phase is determined by an exact relation to the amplitude. This approach is extended in the present analysis with new relevant concepts and parameters for pulse dynamics of classical and quantal systems. The amplitude oscillator has a particularly nice numerical behavior. In the case of strong pulses it does not possess any of the fast oscillations induced by the pulse on the original harmonic oscillator. Furthermore, the new dynamical parameters introduced in this approach relate closely to relevant characteristics of the pulse. The relevance to quantum mechanical problems such as reflection and transmission from a localized well and mechanical problems of controlling vibrations is illustrated.