Wyniki wyszukiwania - BazTech

1

The object-oriented process flow modelling of discrete production systems

Habel J., Wojakowski P.

Czasopismo Techniczne. Mechanika

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2010

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R. 107, z. 2-M

83-90

EN

The main idea of this paper is related to building of models allowing to visualise and examine some aspects of a discrete production system. Those models, which are simplified, artificial representations of real environment, constructed to facilitate off-line study of real objects or complex systems, will allow to test out in advance the impact of planning decisions and therefore avoid making wrong decisions and minimize the disruption to the real process. The idea of process flow model is based on the machining subsystem model, which has been worked out for describing only machining processes. The extension of that model is proposed in this paper. The new process flow model includes a description of materials flow as well (products, tools, tooling etc.), needed for manufacturing raw materials into finished products. Materials flow occurs between consecutive work stations or assembly stations and it concerns transportation, manipulation and warehousing of materials. So it is set a technological subsystem and a materials flow subsystem apart. An object-oriented models for these subsystems has been worked out. Whole production system is described as a set of objects, which consist of attributes. Each object has got a state space. A state space can describe single object, a pair of objects or a chain of objects. Between the objects, which are made up of a couple of objects, some relationships occur. An object state space can change under the influence of an activity sequence. Activities are divided into manufacturing activities model and auxiliary activities model. The second model consists of objects from materials flow subsystem. These objects influence other objects in production system by auxiliary activities realization, which change a state space of them by changing their attributes values. Auxiliary activities allow to make manufacturing activities. Auxiliary activities model is described in this paper.

PL

W artykule przedstawiono koncepcję utworzenia obiektowo-zorientowanego modelu przepływu produkcji, aby możliwa była analiza pewnych kwestii, związanych z realizacją procesów produkcyjnych w dyskretnym systemie wytwarzania. Jako główny cel założono, że praca z modelem ma ułatwić planowanie zdolności produkcyjnych, co w konsekwencji pozwoli uniknąć błędnego podejmowania decyzji dotyczących przyjmowania nieopłacalnych zleceń. Model składa się z dwóch głównych części, gdzie wyróżniono model budowy systemu wytwarzania oraz model działań produkcyjnych.

2

Object-oriented model of comb drive microactuator

Wiak S., Smółka K.

Archives of Electrical Engineering

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2007

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Vol. 56, nr 2

149-162

EN

The paper describes methods of electrostatic comb drive structure accelerometers (MEMS) design and analysis based on mechanical and electrostatic structural models. Accelerometers design is a highly interdisciplinary area and, therefore, different methods and tools have to be exploited. Both, mechanical and electric models of accelerometers give the input data for defining the object-oriented model, based on Matlab-Simulink platform, fulfilling the general demand of dynamic behaviour simulation of comb drive structure. The proposed by authors methodology valuable contribution to MEMS design methodology.

PL

Artykuł opisuje metody projektowania elektrostatycznych struktur grzebieniowych akcelerometrów MEMS i analizę opartą na mechanicznych i elektrostatycznych modelach strukturalnych. Projektowanie akcelerometrów MEMS jest zadaniem interdyscyplinarnym, w związku z tym, podczas projektowania muszą być wykorzystane różne metody projektowania. Mechaniczne i elektrostatyczne modele akcelerometrów umożliwiły zdefiniowanie Modelu Zorientowanego Obiektowo, opartego na platformie Matlab-Simulink, który pozwolił na symulacje zachowania rozważanej struktury grzebieniowej na wymuszenia dynamiczne. Proponowana przez Autorów metodologia jest wartościowym wkładem w metodologię projektowania MEMS. Przedstawioną metodologię można również zaadaptować do projektowania innych, multidyscyplinarnych systemów MEMS.

3

Object and component oriented modelling of complex medical systems

Filutowicz J., Filutowicz Z., Szczepaniak P., Kmiecik A.

Journal of Applied Computer Science

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1999

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Vol. 7, nr 1

91-98

EN

The paper describes modelling of a complex information system supporting the work of a dialysis ward and scientific research carried out there. The system is designed to process multimedia information on patients, health care staff, and management of medical material and equipment. This information proves very useful for scientific research and supports physicians in taking decisions concerning extracorporeal dialysis equipment control. The decision-taking system together with optimal control algorithms are used to assess adequacy of dialyses, which results in higher efficiency of dialyses and improvement of life quality of dialysed patients. The new generation of information systems needs making use of scattered multimedia information, algorithms of computer intelligence and user-friendly communication. To meet these requirements it becomes necessary to apply environments enabling modelling of customer's requirements, information system structure and computer-man communication interface. The technology of component and object oriented modelling allows multiple code usage, and ensures higher reliability and easier modification of the system.