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• Parameter Estimation of Drag Coefficient and Rolling Resistance of Vehicles Based on GPS Speed Data

  109-115

  András Szántó

  Sándor Hajdu

  Views:

  148

  In this paper, a parameter estimation method of the model-based design approach is applied to estimate the drag coefficient and the rolling resistance coefficient of a vehicle. In fact, a constant-force parameter (c_const) and a velocity-square-force parameter (c_square) are in the vehicle model, and these result in the sum force applied along the translational DOF that models the vehicle. It is only an assumption that the constant force is the rolling resistance and the force proportional to the square of the velocity is the drag force of the air. Only GPS speed data is used for the estimation process. The conclusion is that parameter estimation is a good alternative when expensive measurement devices are not available to measure the force losses separately and directly.

• Self-developed Controller System –based on Open-Source Applications

  97-105

  Timotei Erdei

  Zsolt Molnár

  Géza Husi

  Views:

  97

  In the University of Debrecen Building Mechatronics Research Centre faced by the application of building automation technology, are tackled by cutting edge research performed at the Research Centre. The embedded device system, the focus of the ongoing project at the Research Centre, is programmable, reconfigurable, and adjustable. The design of an efficient embedded system must meet regulatory requirements, for optimizing building energy efficiency. The system provides solutions for a range of industrial applications, and peaks the interest of building services providers (e.g. SMEs).

• Six Sigma in preconstruction: case study on improving of reinforcement steel processing

  49-60

  Reka Zsofia Pap

  Edit Szűcs

  Views:

  75

  Lean process improvements are crucial for enhancing production efficiency. In my research, I examine the application of the DMAIC methodology to develop the MEP facility within the framework of lean Six Sigma. Highlighting the challenges of precast concrete production, my study details how lean management aids in efficient process design and measurement. Introducing lean Six Sigma methodology involves standardizing processes and ensuring their effective development, contributing to the facility's efficiency

• Kinematics and Control of a Planar Cable Robot

  88-95

  Pálma Kapitány

  József Lénárt

  Views:

  133

  This paper deals with the kinematics and control of a planar cable robot [1], which is driven by four DC motors with gear. Cable robots are frequently used e.g., for the motion of cameras in sport halls and stadiums and also in high storage logistical systems [2]. Main goal of this research work is to design and build a test bench with low budget, which can model the motion of real life cable robots.

• Design of a Technology-Oriented Bearing Assembling Cell

  98-108

  Zsolt Tiba

  Dániel Fekete-Szűcs

  Views:

  154

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• Experimental Study of Connections with Hardwood Studs

  26-34

  J. Hudák

  Zsolt Literáti

  Imre Kovács

  László Radnay

  Views:

  121

  Attitude change is needed in design of timber structures. Truss girder made of timber elements wi th small cross sections can be used on large spans. Constructing structures with the use of these prefabricated trusses reduces the need of in-site work, and makes the use of ti mber structures economic. Rods of truss can be connected with the use of hardwood stud. On this way all steel components can be eliminated from the truss, so it can be used in aggressive environment as well. Dowel type connection, with hard wood stud is the subject of the present research. Hardwood studs were investigated individually and also as the part of separated connections of the truss girder.