Browsing by Author "Gutierrez, T."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item Assembly simulation on collaborative haptic virtual environments(2007) Iglesias, R.; Prada, E.; Uribe, A.; Garcia-Alonso, A.; Casado, S.; Gutierrez, T.; Medical Technologies; PROMETAL; CIRMETALCurrently, Virtual Environments (VEs) are used within engineering industry: physical prototypes or mock-ups are replaced by virtual prototypes. Increasingly, these VEs also allow designers and engineers to carry out assembly/disassembly processes and assembly sequences before any physical prototype is built. Moreover, different designers or engineers, which may be situated in the same or in geographically dispersed locations, often collaborate in the design of products. This allows developing more complex products within a shorter time scale and lowered costs. On the other hand, the utilization of haptic feedback has been found to significantly enhance task performance, for instance, in assembly tasks. In this paper we describe an assembly simulation application on a collaborative haptic virtual environment, where several users interact with virtual models to perform assembly operations within the same virtual scene. The paper also summarizes results achieved with experiments which evaluated different collaborative architectures. Furthermore, it reports on the goals that can be achieved and the limitations for haptic collaborative interaction in each case.Item A multi-finger haptic interface for visually impaired people(2003) Avizzano, C. A.; Marcheschi, S.; Angerilli, M.; Fontana, M.; Bergamasco, M.; Gutierrez, T.; Mannegeis, M.; CIRMETALThe present paper deals with a novel type of dual point haptic system. The system exploits a novel kind of kinematics to achieve a high isotropy which improves the force rendering. Other features of the system are its high stiffness, high peak forces together with a zero backlash cable based transmission. The device can be used by means of a set of sizeable thimbles by any pairs of user's fingertips. Such a device has been developed within the EU GRAB project, for testing a novel set of application with blind users. Such a project investigates to which extent a purely haptic environment can be employed from users with visual impairments in terms of: the effective capabilities of the device to exchange high level information with the users; the real degree of interaction which can be achieved in this type of system; the effective opportunity for the user to profit from the system using just this type of interaction. The basic system concepts, the application environment and the system performances are given in the following.Item Project MIDAS: Magnet Integrated Design and Analysis System(1997) Colyer, B.; Simkin, J.; Trowbridge, C. W.; Barberis, U.; Picco, E.; Gutierrez, T.; Longo, A.; Greenough, C.; Thomas, D.; Alotto, P.; Molfino, P.; Molinari, G.; Jared, G.; Sormaz, N.; CIRMETAL; Centros PRE-FUSION TECNALIA - (FORMER)Results from a European collaborative project to create an open system for engineering design, with particular emphasis toward electromagnetic devices, are presented. The system, code named MIDAS, is based on the new ISO STEP standard for data exchange and utilises state-of-the-art Graphical User Interfaces, 3D Geometric Modelling and three-dimensional automatic mesh generation with an advanced 2D subset