Wyniki wyszukiwania - BazTech

1

Simulations of safety vales for fluid power systems

Domagała Mariusz, Momeni Hassan, Fabiś-Domagała Joanna, Filo Grzegorz, Lempa Paweł

System Safety : Human - Technical Facility - Environment

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2019

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Vol. 1, nr 1

670--677

EN

Hydraulic power systems are widely used in heavy machinery. Safety of such a systems have a major importance due to the fact that any failure may cause environmental contamination or serious injury. One of the component which protects hydraulic drive systems against excessive rising of working pressure is a safety valve which aim is to maintain pressure in the systems below acceptable level. Pressure control valves which plays important role in a hydraulic systems may have very simple or complex structure. Even in case of the simplest structure of such valve modeling is not an easy task. The new quality in designing hydraulic valves bring CFD method and FSI (Fluid Structure Interaction) methods.

2

Matrix FMEA analysis as a preventive method for quality design of hydraulic components

Fabiś-Domagała Joanna, Momeni Hassan, Domagała Mariusz, Filo Grzegorz

System Safety : Human - Technical Facility - Environment

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2019

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Vol. 1, nr 1

684--691

EN

Preventive methods are important group of methods used in the process of design and which are known as quality design methods. The aim of these methods is identification of potential failures and cause-and-effect relationships in consistent and systematic way, and then taking appropriate preventive or corrective actions. The well-known examples of preventive methods also used for modelling and analysis of the criticality (risk) factor are FMEA analysis and FTA analysis. A matrix FMEA analysis method has been presented and discussed in the work. The basic assumptions related to this method were characterized and algorithms for each stages of analysis have been presented. It has been presented practical application of FMEA method on example of selected components of hydraulic system.

3

Remote controlled vehicle for removal of disasters

Typiak A.

Journal of KONES

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2009

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Vol. 16, No. 3

447-453

EN

This paper presents an analysis of various natural and man-made disasters being angled as possibilities of usage of remote control or autonomous machines and vehicles. The certain requirements which such machines and vehicles have to meet to remove effects of natural disasters and local military conflicts or terrorist attacks are described. Proposal for remote-controlled vehicle assigned for operations in conditions hazardous to human live is presented. The value of unmanned vehicles is directly related to the applications to which it can be successfully applied. This paper will highlight applications, missions, and capabilities that have been demonstrated on the "Lewiatan " platform to date as well as future application and mission considerations. This platform – assigned for both water and land operations - is equipped with remote control, surroundings observation and visualization systems. In this paper the advantages of hydrostatic power systems as the power transmission units for unmanned vehicles have been also presented. Resolving problems with navigation of vehicles will allow expansion of it 's applications from a military point of view in the upcoming few years, to a wide range of applications in times of crisis with direct human life threat.

4

Wspomaganie wyboru koncepcji układu hudraulicznego za pomocą prototypowego systemu ekspertowego

Rohatyński R., Domagała Z., Prokopowicz J.

Systems : journal of transdisciplinary systems science

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2002

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Vol. 7, No. 1 sp.

449-459

PL

Opisano system ekspertowy do wielokryterialnej oceny układów hydraulicznych na etapie projektowania koncepcyjnego i pokazano przykład jego zastosowania. Istotną zaletą tego systemu jest możliwość uwzględniania w procesie wyboru opinii specjalistów z różnych dziedzin. Stwarza to warunki dla współbieżnego, a nie sekwencyjnego, wyboru najlepszej koncepcji. System ułatwia wybór najlepszego wariantu układu, dzięki czemu czas i koszty projektowania mogą zostać zmniejszone.

EN

A method for optimization of design process is proposed, which is based on the process decomposition and representation by means of the dependency matrix. The method effectiveness has been demonstrated on an industrial example. Due to reordering of partial tasks the process has been substantially improved. It also contributed to effectiveness of computer systems involved into the design procedure.