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1
Content available remote Characteristics of discrete-continuous flexibly vibrating mechatronic system
100%
Buchacz A.
|
2008
|
tom Vol. 28, nr 1
43-46
EN
Purpose: The purpose of this paper is application of approximate method of solving the task of assignment the frequency-modal analysis and characteristics of flexibly vibrating mechatronic system. Design/methodology/approach: The main approach of the subject was to formulate and solve the problem in the form of set of differential equation of motion and state equation of considered mechatronic model of object. Galerkin's solving method has been used. The considered flexibly vibrating mechanical system is a continuous beam, clamped at one of its end. Integral part of mechatronic system is a transducer, extorted by harmonic voltage excitation, to be perfectly bonded to the beam surface. Findings: The parameters of the transducer have important influence on values of natural frequencies and on form of characteristics of the discussed mechatronic system. Research limitations/implications: In the paper the linear mechanical subsystem and linear electric subsystem of mechatronic system has been considered, however for this kind of systems the approach is sufficient. Practical implications: The methods of analysis and obtained results can be base on design and investigation for this type of mechatronic systems. Originality/value: The mechatronic system formed from mechanical and electric subsystems with electromechanical bondage has been considered. This approach is different from those considered so far.
2
Content available remote Analysis of probability as an impulse to synthesis of a beam-system represented by hypergraphs
100%
Buchacz A.
|
2010
|
tom Vol. 38, nr 1
72-79
EN
Purpose: of this paper is to analyze vibrating beam by an exact and approximate methods and to create hypergraphs of the beam in case of two methods of analysis. Design/methodology/approach: was to nominate the relevance or irrelevance between the characteristics obtained by the considered methods - especially concerning the relevance of the natural frequency-poles of beam characteristics. The main subject of the research is a continuous free beam as a subsystem of vibrating beam-system with constant cross sections. Findings: this approach is that approximate solutions fulfil all conditions for vibrating beams and can be an introduction to synthesis of these systems modelled by hypergraphs. Research limitations/implications: linear continuous flexibly vibrating free beam is considered Practical implications: of this study is mainly the introduction to synthesis of flexibly vibrating continuous beam-systems. Originality/value: of this approach is about application of approximate methods of analysis of a beam and modelling the one of transformed hypergraph.
3
Content available remote Calculation of characteristics of torsionally vibrating mechatronic system
100%
Buchacz A.
|
2007
|
tom Vol. 20, nr 1-2
327-330
EN
Purpose: of this paper is the application of the approximate method to solve the task of assigning the frequency - modal analysis and characteristics of a mechatronic system. Design/methodology/approach: was the formulated and solved as a problem in the form of a set of differential equations of motion and state equations of the considered mechatronic model of an object. To obtain the solution, Galerkin's method was used. The discussed torsionally vibrating mechanical system is a continuous bar of circular cross-section, clamped on its ends. A ring transducer, which is an integral part of the mechatronic system is assumed to be perfectly bonded to the bar surface. Findings: this study is that the parameters of the transducer have an important influence on the values of natural frequencies and on the form of the characteristics of the said mechatronic system. The poles of the dynamical characteristic calculated with the use of mathematical exact method and Galerkin's method have approximately the same values. The results of the calculations were not only presented in a mathematical form but also as transients of the examined dynamical characteristic which are a function of frequency of the assumed excitation. Research limitations/implications: is that the linear mechatronic system was considered, but for this type of systems, such approach is sufficient. Practical implications: of this researches was that another approach is presented, that means in the domain of frequency spectrum analysis. The method used and the obtained results can be of some value for designers of mechatronic systems. Originality/value: of this paper is that the mechatronic system, created from mechanical and electrical subsystems with electromechanical bondage was examined. This approach is other than those considered elsewhere.
4
Content available remote Projektowanie mostu suwnicy o żądanym widmie częstości jako problem syntezy dyskretnych układów drgających
100%
Buchacz A.
|
2006
|
tom R. 103, z. 1-M
59-69
PL
W pracy przedstawiono problem projektowania mostu suwnicy o żądanym widmie częstości. Osiągnięto rozwiązanie zagadnienia, stosując metodę syntezy drgających układów dyskretnych-rozkładu charakterystyki na ułamek łańcuchowy w połączeniu z modyfikacją otrzymanej struktury układu oraz z zastosowaniem metod sił i odkształceń. Omawiane treści zilustrowano przykładem liczbowym.
EN
In this paper the problem of designing of overhead crane traveling bridge with requirement frequency spectrum has been presented. Using the method of synthesis of discrete system called distributing of characteristic into fraction expansion method and connecting it with modification of obtained structure and with force and deformation method, the solution has been achieved. Presenting contents was illustrating by numerical example.
5
Content available remote Comparison of solutions obtained by exact and approximate methods for vibrating shafts
100%
Buchacz A.
|
2007
|
tom Vol. 23, nr 1
63-66
EN
Purpose: The purpose of this paper is to compare the transients of characteristics obtained by the approximate and exact method and to answer to the question - if the method can be used to nominate the characteristics of mechatronic systems. Design/methodology/approach: The main approach to the problem is to nominate the relevance or irrelevance between the characteristics obtained by different methods - especially the relevance of the pole values of characteristics. The main subject of the research is the continuous torsionally vibrating bar considered as a mechanical subsystem of the mechatronic system. Findings: The values of zeroes and poles of continuous mechanical system depend on the boundary conditions. Foreseeing approximate solutions fulfill some conditions only, particularly for flexibly vibrating beams. Research limitations/implications: The linear continuous torsionally vibrating bar is considered. Practical implications: The main point is the analysis and the examination of torsionaly vibrating continuous mechatronic systems which characteristics can be nominated with approximate methods only. Originality/value: The originality of the approach relies on the comparisation of the compatibility of the characteristics of the mechatronic and mechanical systems with demanded accuracy, nominated with the same approximate method.
6
Content available remote New branched vibrating systems as result of synthesis of selected class of characteristics
100%
Buchacz A.
|
2007
|
tom Vol. 23, nr 1
15-22
EN
Purpose: of this paper is the application of the synthesis method according to realization of mobility or immobility function into partial fraction when the level of the denominator of characteristic is higher than the level of its numerator. Design/methodology/approach: was formulated and formalized by the problem of obtaining the "new" discrete vibrating mechanical systems with branched structures. The models of mechanical systems were represented by polar graphs. The reverse problem of dynamics of defined class of vibrating mechanical systems was also formalized and solved. Findings: this study is that the same class of polar graph is a model of mechanical system with "old" and "new" branched structure. Obtaining structures of graphs as models of mechanical systems are a physical realization of dynamical characteristics, which may be considered as the immobility or mobility function. Research limitations/implications: is that the linear vibrating discrete mechanical systems with branched structures were considered. Practical implications: of this researches was that another approach was presented, which that means unclassical method of modeling of different structures of mechanical systems in form of polar graphs was used. The used method of synthesis and the obtained results can be of some value for designers of designated class of vibrating mechanical systems. Originality/value: of this paper is that the only one polar graph is obtained as a model of not only one mechanical system. The results are obtained after distribution of two dynamical characteristics into partial fraction of finding structures of mechanical systems. This approach is other than those considered elsewhere.
7
Modyfikacja strukturalna systemu suwnica-operator metodą grafów i liczb strukturalnych w wyznaczaniu widma częstości
100%
Buchacz A.
|
2002
|
tom Z. 19
53-59
PL
Badany jest ciąg modeli systemu: operator-suwnica w postaci zbioru dyskretnych układów mechanicznych, które utworzono z elementów inercyjnych oraz elementów sprężystych. Zamieszczono przykłady wyznaczenia częstości drgań własnych. Otrzymany model matematyczny (analiza) umożliwia dobór parametrów układu mechanicznego (synteza i projektowanie), aby cechował się on żądanymi własnościami dynamicznymi. Ponadto proponowane podejście do zagadnienia jest stosunkowo łatwe do oprogramowania, co pozwala na szybką interpretację wyników oraz pełną swobodę do dekompozycji i modyfikacji układu.
EN
The set of phenomena models of: operator-overhead traveling crane as a colIection of discrete mechanical systems, which are created of elements and elastical elements, has been examined. Samples of enumerating of natural frequency spectrum are presented. Obtained model (the analysis) makes possible of selection of parameters of mechanical system (the synthesis and design). The system is then characterized assumed dynamical properties. More over proposal attempt do the problem is relatively simple to programming. It alIows speedy interpretation to results and fulI freedom to accomplish of decomposition and modification of examining system.
8
Wyznaczanie charakterystyk częstotliwościowych drgających układów mechatronicznych
100%
Buchacz A.
|
2009
|
tom Z. 12
CD-CD
PL
W pracy przedstawiono zastosowanie metody Galerkina do analizy widmowo-modalnej w celu wyznaczenia charakterystyk częstotliwościowych ciągło-dyskretnego układu mechatronicznego. Praktycznym efektem takiego ujęcia jest badanie charakterystyk w dziedzinie częstości. Zastosowane ujęcie i otrzymane wyniki mogą być zastosowane w projektowaniu i badaniu tej klasy układów mechatronicznych.
EN
Purpose of this paper is the application of the approximate method called Galerkin's method to solve the task of assigning the frequency-modal analysis and characteristics of a continuous-discrete mechatronic system. Practical implications of these researches were that another approach is presented, that means in the domain of frequency spectrum analysis. The method used and the obtained results can be of some value for designers of mechatronic systems.
9
Content available remote Investigation of piezoelectric influence oncharacteristics of mechatronic system
100%
Buchacz A.
|
2008
|
tom Vol. 26, nr 1
41-48
EN
Purpose: The purpose of this paper is application of approximate method of solving the task of assignment the frequency-modal analysis and characteristics of mechatronic system. Design/methodology/approach: The main approach of the subject was to formulate and solve the problem in the form of set of differential equation of motion and state equation of considered mechatronic model of object. Galerkin's method to solving has been used. The considered torsionally vibrating mechanical system is a continuous bar of circular cross-section, clamped at one of its end. Integral part of mechatronic system is a ring transducer, extorted by harmonic voltage excitation, to be perfectly bonded to the bar surface. Findings: The parameters of the transducer have important influence of values of natural frequencies and on form of characteristics of the discused mechatronic system. The results of the calculations were not only presented in mathematical form but also as a transients of examined dynamical characteristic which were function of frequency of the excitation. Research limitations/implications: In the paper the linear mechanical subsystem and linear electric subsystem of mechatronic system has been considered, however for this kind of systems the approach is sufficient. Practical implications: The methods of analysis and obtained results can be base of design and investigation for this type of mechatronic systems. Originality/value: The mechatronic system created from mechanical and electric subsystems with electromechanical bondage has been considered. This approach is different from those considered so far.
10
Content available remote Dynamical flexibility of torsionally vibrating mechatronic system
100%
Buchacz A.
|
2008
|
tom Vol. 26, nr 1
33-40
EN
Purpose: of this paper is the application of the approximate method called Galerkin's method to solve the task of assigning the frequency-modal analysis and characteristics of a mechatronic system. Design/methodology/approach: was the formulated and solved as a problem in the form of a set of differential equations of the considered mechatronic model of an object. To obtain the solution, Galerkin's method was used. The discussed torsionally vibrating mechatronic system consists of mechanical system, which is a continuous bar of circular cross-section, clamped on its ends. The electrical subsystem of the considered mechatronic system is a ring transducer to be perfectly bonded to the bar surface. Findings: this study is that the parameters of the transducer have an important influence on the values of natural frequencies and on the form of the characteristics of the said mechatronic system. The results of the calculations were not only presented in a mathematical form but also as transients of the examined dynamical characteristic which are a function of frequency of the assumed excitation. Research limitations/implications: is that the linear mechatronic system was considered, for this type of systems, such approach is sufficient. Practical implications: of this researches was that another approach is presented, that means in the domain of frequency spectrum analysis. The method used and the obtained results can be of some value for designers of mechatronic systems. Originality/value: of this paper is that the mechatronic system, created from mechanical and electrical subsystems with electromechanical bondage was examined. This approach is other than those considered elsewhere.
11
Wyznaczanie charakterystyk częstotliwościowych drgających układów mechatronicznych
100%
Buchacz A.
|
2009
|
tom nr 9
23-27
PL
W pracy przedstawiono zastosowanie metody Galerkina do analizy widmowo-modalnej w celu wyznaczenia charakterystyk częstotliwościowych ciągło-dyskretnego układu mechatronicznego. Praktycznym efektem takiego ujęcia jest badanie charakterystyk w dziedzinie częstości. Zastosowane ujęcie i otrzymane wyniki mogą być wykorzystywane w projektowaniu i badaniu tej klasy układów mechatronicznych.
EN
Purpose of this paper is the application the approximate method called Galerkin's method to solve the task of assigning the frequency-modal analysis and characteristics of a continuous-discrete mechatronic system. Practical implications of this approach were presented, that means in the domain of frequency spectrum analysis. The method used and the obtained results can be of some value for designers of mechatronic system.
12
Computer-aided synthesis and analysis of bar systems characterized by a branched structure represented by graphs
100%
Buchacz A.
|
1999
|
tom Vol. 40, no 3
315-328
EN
In this paper, a method of decomposition of characteristics into partial fractions was applied in order to synthesize the dynamical characteristics of the longitudinally or torsionally vibrating mechanical system characterized by a branched structure. At the end of this paper, the idea of computer-aided numerical synthesis and analysis of vibrating systems represented by graphs has been shown.
13
Content available remote Investigation of flexibly vibrating subsystem of mechatronic system
100%
Buchacz A.
|
2009
|
tom Vol. 34, nr 1
55-62
EN
Purpose: of this paper is to investigate the transients of characteristics of vibrating beams obtained by the exact and approximate methods and to answer to the question – if the method can be used to nominate the characteristics of mechatronic systems. Design/methodology/approach: was to nominate the relevance or irrelevance between the characteristics obtained by considered methods – especially concerning the relevance of the natural frequencies-poles of characteristics of mechanical part of mechatronic system. The main subject of the research is the continuous vibrating beam. Findings: this approach is fact, that approximate solutions fulfill all conditions for vibrating beams and some conditions only, particularly for vibrating beams as the subsystems of mechatronic systems. Research limitations/implications: is that linear continuous flexibly vibrating beam is considered. Practical implications: of this study is the main point is the analysis and the examination of flexibly vibrating discrete-continuous mechatronic systems which characteristics can be nominated with approximate methods only. Originality/value: of this approach relies on the comparison of the compatibility of the characteristics of the mechatronic and mechanical systems with demanded accuracy, nominated with approximate method.
14
Content available remote Exact and approximate analysis of mechanical and mechatronic systems
100%
Buchacz A.
|
2009
|
tom Vol. 33, nr 1
47-52
EN
Purpose: of this paper is to compare the transients of characteristics obtained by the approximate method and exact one and to answer to the question – if the method can be used to nominate the characteristics of mechatronic systems. Design/methodology/approach: was to nominate the relevance or irrelevance between the characteristics obtained by considered methods – especially concerning the relevance of the pole values of characteristics. The main subject of the research is the continuous torsionally vibrating bar considered as a mechanical subsystem of the mechatronic system. Findings: this approach is fact, that approximate solutions fulfill all conditions for vibrating bars and some conditions only, particularly for flexibly vibrating beams. Research limitations/implications: is that linear continuous torsionally vibrating bar is considered. Practical implications: of this study is the main point is the analysis and the examination of torsionaly vibrating continuous mechatronic systems which characteristics can be nominated with similar methods only. Originality/value: of this approach relies on the comparison of the compatibility of the characteristics of the mechatronic and mechanical systems with demanded accuracy, nominated with similar method.
15
Content available remote Modelling, synthesis, modification, sensitivity and analysis of mechanic and mechatronic systems
100%
Buchacz A.
|
2007
|
tom Vol. 24, nr 1
198-207
EN
Purpose: The main purpose of this thesis is the research of the authors scientific problematic which were presented during the AMME and CAM3S conferences. Design/methodology/approach: The main approach to the problem is to present the variety of the conferences and on this background - the abilities of the propositions for the potential participants. According to the author of this article there were the topics concerning - modelling, synthesis, design, examining the sensitivity, modifications of discrete, continuous, discrete continuous mechatronic systems and machatronic active or passive and also taking into consideration the transportation. Findings: The flexibility impact of the manipulators chains in fix position with the transportation was examined. The problem of the synthesis and examining the sensitivity of continuous and discrete continuous systems with the usage of method of examining this problem with discrete models was formulated and solved. The problem: of structural modification of different type of systems was formulated and solved; of active discrete structures. The methods of synthesis according to selected class of dynamical characteristic in order to generate the "new" structures - physical realizations in a shape of models of mechatronic systems were given. Research limitations/implications: The various linear mechanical and mechatronic systems were modelled, synthesised, design and analysed. Practical implications: Obtained results can be used as a field of improving and developing the modelling methods as far as design and examining the various class of vibrating mechanical and mechatronic systems are concerned. Mentioned results can be also useful for the engineers which are working with this or similar problems. Originality/value: New modelling methods, synthesis, examination of sensitivity and modifications of selected class of mechanic and mechatronic systems represented by graphs and structural numbers were presented.
16
Content available remote Dynamical flexibility of discrete-continuous vibrating mechatronic system
100%
Buchacz A.
|
2008
|
tom Vol. 28, nr 2
159-166
EN
Purpose: The application of approximate method for solving the task of assignment the frequency-modal analysis and characteristics of flexibly vibrating mechatronic system, because for considered case of boundary conditions exact and approximate methods for the coordinates are equivalent. Design/methodology/approach: Formulate and solve the problem in the form of a set of differential equations of motion and state equations of the considered mechatronic model of an object Galerkin's method was used. The considered flexibly vibrating mechanical system is a continuous beam, clamped at one of its ends. An integral part of the mechatronic system is a transducer perfectly bonded to the beam surface. Findings: The parameters of the transducer exert an important influence on the values of natural frequencies and on the form of the characteristics of the discussed mechatronic system. Research limitations/implications: The linear mechanical subsystem and linear electrical subsystem of the mechatronic system were analyzed and the theory Euler-Bernoulli is used for the beam; however, this approach is sufficient for such systems. Practical implications: Global approach is presented in the domain of frequency spectrum analysis. The methods of analysis and the obtained results my give grounds for designing and investigating this type of mechatronic systems. Originality/value: The mechatronic system created from mechanical and electric subsystems with electromechanical bondage has been considered. This approach is different from those considered so far.
17
Content available remote Numeryczne projektowanie, analiza widmowa, modalna i stereomechaniczna układów prętowych
100%
Buchacz A.
|
2006
|
tom R. 48, nr 5-6
42-47
PL
W artykule przedstawiono problem projektowania układu przekształcającego drgania o żądanym widmie częstości. Rozwiązane zagadnienia osiągnięto, stosując metodę syntezy drgających układów ciągłych-rozkładu charakterystyki na ułamki proste. Tak zaprojektowany układ poddano analizie numerycznej, identyfikując częstości drgań własnych na podstawie wyników analizy modalnej. Następnie przeprowadzono analizę stereomechaniczną.
EN
In the paper the problem of design transforming vibration system with assumed frequency spectrum has been presented. Using the method of synthesis of vibrating mechanical systems called partial fraction expansion method of distribution of characteristics the solution of this problem has been achieved. Designed system to numerical analysis has been made.
18
Podatność dynamiczna belki o odcinkowo-nieliniowo zmiennym przekroju jako wprowadzenie do badania manipulatorów robotów metodą hipergrafów
100%
Buchacz A.
|
2001
|
tom z. 15
41-46
PL
Badając drgające ogniwa robotów, stosuje się często modele tych obiektów w postaci prętów czy belek o odcinkowo stałym przekroju. Takie podejście jest często zbyt odległym przybliżeniem zmienności przekroju tych obiektów, a wyznaczone charakterystyki nie opisują w sposób zadowalający zachowania badanego układu. Aby uściślić analizę modeluje się ogniwo o zmiennym przekroju pojedynczą belką o różnych postaciach funkcji, określającej jego zmienność. W pracy przedstawiono sposób wyznaczenia podatności dynamicznych belki w przypadku zmiany przekroju według funkcji f(x) = ex.
EN
In the research of vibrating links of robots, with nonlinear changeable sections, models with segments of constant section are often applied. Such an approach may be far too inadequate to approximate sections changes, so the determined dynamic characteristics do not describe the behavior of the investigated system in a satisfactory way. To make the analysis more precise, the investigated object with changeable sections is replaced by a single bar or with a various-form function describing the section change. In the paper the way of determination of dynamical flexibilities of beam with changeable sections according to function f(x) = ex has been shown.
19
Sformułowanie problemu drgań wzdłużnych pręta z uwzględnieniem ruchu unoszenia
100%
Buchacz A.
|
2003
|
tom z. 20
46-51
PL
Wyprowadzono równania ruchu pręta drgającego wzdłużnie, z uwzględnieniem jego ruchu unoszenia, stosując równania Lagrange'a II rodzaju z uwzględnieniem transformacji tensora rotacji układów współrzędnych.
EN
The motion equations were formulated by the second type Lagrange equations with taking into consideration its transportation and transformation by the rotation tensor of coordinate system.
20
Modyfikacja strukturalna i parametryczna jako problem syntezy dyskretno - ciągłych układów mechanicznych
63%
Buchacz A. , Dzitkowski T.
|
1999
|
tom z. 10
29-34
PL
W pracy przedstawiono metodę projektowania kaskadowych dyskretno- ciągłych układów mechanicznych o żądanym widmie częstości. Metoda ta oparta jest na rozkładzie charakterystyki dynamicznej na ułamek łańcuchowy. Przedstawiono ponadto problem modyfikacji strukturalnej i parametrycznej otrzymanego układu.
EN
In the paper presents a method of design of mechanical systems with the assumed frequency spectrum, using the synthesis of the dynamical characteristics of the longitudinally vibrating discrete - continuous mechanical systems with cascade structure. This is of the continued fiaction expansion method. Moreover the modification of structural and parameters problem of obtained system has been presented.
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