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1 Czasopismo Techniczne

3 2015

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Industrial computer programming on the basis of laboratory stands

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Dominik I. , Dwornicka R.

One of the main weaknesses in the Laboratory of Distributed Control Systems at the AGH University of Science and Technology in Krakow was students’ knowledge about connecting peripheral devices to industrial computers known also as PLCs. After participating in PLC laboratory course students were able to create advanced programs, control complicated mechatronic systems but they could not assemble even simple electrical circuits. It results from the fact that they worked on ready-made laboratory stands where all the electrical connections had already been set. The paper presents the building of eight laboratory stands for learning how to connect PLC inputs and outputs as the first step before proper programming.

Real-time system based on FPGA applied to self-excited acoustical system for stress change measurement

80%

Kwaśniewski J. , Dominik I. , Lalik K.

In the paper the real-time system based on FPGA applied to control the delay time in feedback loop of the Self-excited Acoustical System is presented. The system can be used for stress change measurement in elastic constructions. Stress changes manifest themselves in small but detectable variations of resonance frequency. This phenomenon can be used to indirect measure stress changes in the material. In the article the limits of the measurement system which occurred during research on the analogue version of the system were eliminated by applying FPGA technology.

Computer-aided instruction in teaching biomedical engineering students

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Dwornicka R. , Dominik I. , Iwaniec M.

The studies of the Biomedical Engineering faculty combine technical and humanistic elements. The biomedical engineering itself is a combination of knowledge located at the intersection of engineering, medical and biological applications. Technical universities which offer training courses on Biomedical Engineering place greater emphasis on engineering education. It is apparent, however, that the majority of students of this course are graduates of high schools with humanistic knowledge and no technical preparation. Initial teaching of technical subjects must therefore be conducted in a language and format accessible to the “non-engineers”. Particularly, it is important to demonstrate and teach students the tools that will facilitate their further education.

Prosthesis design driven by electroactive polymers

80%

Dominik I. , Kaszuba F. , Dwornicka R.

Applications of dielectric elastomer (DE) actuators are presented in this paper. Dielectric elastomers (a type of electroactive polymer) are one the most promising smart materials. They consist of two flexible electrodes and a dielectric film between them. After applying voltage (3–5 kV) to the electrodes, the thickness of the polymer layer lowers. Changes of the thickness can be indirectly measured , enabling the element to work as a sensor. A self-sensing and energy harvesting elements are also described. Two applications are described – an active orthosis and a force feedback device.