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Publikacije (45112)

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T. Pepelnjak, K. Kuzman, M. Klinc, G. Gantar

The Slovene toolmaking industry is forced to follow the trends of world automotive industry demanding increased use of steels with improved mechanical properties like high strengths, high elongations etc. The higher strengths of so-called 'high strength low alloyed' steels and 'advanced high strength' steels cause higher tool pressures and loads during forming, higher springback effects of the products after forming and demand special design of the tools. In the paper, the material properties of H220, H420LA and TRIP700 steels were analysed and the bending tests were performed in order to compare the springback effects of all three materials. Based on the obtained data, first guidelines were prepared for the design of the tools. These guidelines were taken into account when the first forming tools for HSLA and AHSS materials were designed in Gorenje Orodjarna d.o.o. tool factory. The FEA approach was used for the tool design of the part made of H420LA steel.

Elvedin Kljuno, Robert L. Williams

This paper shows an overview of the walking model by grouping them into two large groups: the models with the concentrated mass and models with distributed mass. As an example of the models with concentrated mass, a mass-spring inverted pendulum model is shown, accompanied with a short analysis. As an example of a more complex model, a 13 DOF walking robot model is analyzed including the model kinematics, dynamics and controls accompanied with numerical solutions (simulations) for particular desired joint trajectories, recorded from a real human walking cycle. Kinematic and Dynamic analysis is discussed including results for joint torques and ground force necessary to implement the prescribed walking motion. This analysis is accompanied with a limited comparison with available experimental data. Finally, an inverse plant and tracking error linearization based controller design approach is described accompanied with results analysis and conclusions about the controller performances.

Jaime Martín, R. Seepold, N. M. Madrid, Juan Antonio Álvarez-García, A. Fernández-Montes, J. Ortega

Jaime Martín, R. Seepold, N. M. Madrid

This paper reviews the state of art of e-health applications and technologies. These solutions usually are proprietary and lack interoperability between them. Our approach describes a system architecture that provides capabilities to integrate different telecare, telemedicine and domotic services in a smart home gateway hardware independent. We propose a rule system to define the user behaviour and monitor relevant events. Several use cases and data model for the system are presented.

Jesús Sáez, Alvaro Reina Nieves, R. Seepold, N. M. Madrid, Alberto los Santos Aransay, P. Sanz, Imran Sabir, H. Aarts

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