Synthesis of mechanical systems including passive or active elements

• Autorzy: Białas K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this paper there are presented basic methods of synthesis of mechanical systems including active and passive elements. The major aim of the research is to work out a method of structure and parameters searching i.e. structural and parametric synthesis of a discrete model of mechanical system on the base of desired requirements. The requirements pertain to dynamic features of the system, particularly its frequency spectrum. The purpose of this paper is also comparison of reduction of vibrations of mechanical systems by use the passive or active elements. Design/methodology/approach: In this article was used unclassical method of polar graphs and their relationship with the algebra of structural numbers. This method enables analysis without limitations depending on kind and number of elements of complex mechanical system using electronic calculation technique. Findings: Use of active elements into the elimination of vibration offers the possibility to overcome the limitations of the methods of passive elimination of vibration, such as, in particular, low efficiency in case of low-frequency vibration. Research limitations/implications: The scope of discussion is synthesis of passive and active mechanical systems, but for this type of systems, such approach is sufficient. Practical implications: The results represented this work in form of polar graphs extend the tasks of synthesis to other spheres of science e.g. electric systems. The practical realization of the reverse task of dynamics introduced in this work can find uses in designing of machines with active and passive elements with the required frequency spectrum. Originality/value: Thank to use an unclassic method of polar graphs and their relationship with the algebra of structural numbers, can be possible correcting systems as early as during the designing of future functions of the system as well as during the construction of the system.

Słowa kluczowe

EN

process systems design; polar graphs; structural numbers; synthesis

PL

projektowanie; grafy biegunowe; liczby strukturalne; synteza

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 26, nr 1
• Strony: 18--25
• Opis fizyczny: Bibliogr. 20 poz., wykr.

Twórcy

autor

Białas K.

• Institute of Engineering Processes Automation and Integrated Manufacturing Systems, Mechanical Engineering Faculty, Silesian University of Technology, ul. Konarskiego 18A, 44-100 Gliwice, Poland,

Bibliografia

• [1] S. Michałowski, Active systems in machines construction. Cracow University of Technology Press, Monograph 171, Cracow 1994 (in Polish).
• [2] A. Buchacz, K. Żurek, Reverse task of active mechanical systems depicted in form of graphs and structural numbers. Monograph 81, Silesian University of Technology Press, Gliwice 2005 (in Polish).
• [3] A. Buchacz, K. Żurek, Selection of active elements reducing vibrations, Proceedings of the 8th Conference on Dynamical Systems Theory and Applications, Łódź, 2005, 863-868.
• [4] K. Żurek, Design of reducing vibration machatronical systems, Proceedings of the Worldwide Congress on Materials and Manufacturing Engineering and Technology, Computer Integrated Manufacturing, Gliwice, 2005, 292-297.
• [5] K. Białas, Comparison of passive and active reduction of vibrations of mechanical systems, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 455-458.
• [6] K. Białas, Synthesis of mechanical systems including passive or active elements reducing of vibrations, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 323-326.
• [7] A. Buchacz, J. Świder (red.) in., Computer support CAD CAM. Support for construction of systems reducing vibration and machine noise, WNT, Warsaw, 2001 (in Polish).
• [8] A. Buchacz, Hypergraphs and their subgraphs in modelling and investigation of robots, Journal of Materials Processing Technology 157-158 2004 37-44.
• [9] A. Buchacz, The expansion of the synthesized structures of mechanical discrete systems represented by polar graphs, Journal of Materials Processing Technology 164-165 (2005) 1277-1280.
• [10] A. Buchacz, Modifications of cascade structures in computer aided design of mechanical continuous vibration bar systems represented by graphs and structural numbers, Journal of Materials Processing Technology 157-158 (2005) 45-54.
• [11] A. Buchacz, Influence of piezoelectric on characteristics of vibrating mechatronical system, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 229-232.
• [12] A. Buchacz, Sensitivity of mechatronical systems represented by polar graphs and structural numbers as models of discrete systems, Journal of Materials Processing Technology 175 (2006) 55-62.
• [13] A. Buchacz, A. Wróbel, Piezoelectric layer modelling by equivalent circuit and graph method, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 299-302.
• [14] A. Buchacz, S. Żółkiewski, Dynamic analysis of the mechanical systems vibrating transversally in transportation, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 331-334.
• [15] A. Dymarek, Reverse task of damping mechanical systems depicted in form of graphs and structural numbers, Doctoral thesis, Silesian University of Technology, Gliwice, 2000.
• [16] A. Dymarek, T. Dzitkowski, Modelling and synthesis of discrete- continuous subsystems of machines with damping, Journal of Materials Processing Technology 164-165 (2005) 1317-1326.
• [17] T. Dzitkowski, A. Dymarek, Synthesis and sensitivity of machine driving systems, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 359-362.
• [18] A. Sękala, J. Świder, Hybrid graphs in modelling and analysis of discrete-continuous mechanical systems, Journal of Materials Processing Technology 164-165 (2005) 1436-1443.
• [19] G. Wszołek, Modelling of mechanical systems vibrations by utilisation of GRAFSIM software, Journal of Materials Processing Technology 164-165 (2005) 1466-1471.
• [20] J. Świder, G. Wszołek, K. Foit, P. Michalski, S. Jendrysik, Example of the analysis of mechanical system vibrations in GRAFSIM and CATGEN software, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 391-394.