S.E. Mattsson and M. Andersson. Omola---An Object-oriented Modeling Language. In M. Jamshidi and C.J. Herget, editors, Recent Advances in Computer-Aided Control Systems Engineering. Elsevier Science Publishers, 1993.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....and Szymkat reported in [63] The remaining work reported in this chapter and in chapter 5 was conducted later as a part of research for this thesis. 54 Containers have some, but not all of the properties of objects which appear in objectoriented programming and object oriented databases [10, 3, 69]. The term Container has been chosen in order to avoid the appearance of claiming real object like behaviour because certain crucial properties of objects, such as inheritance of class definitions, are absent from Containers . The features in Containers common to objects are: Classes of ....

S.E. Mattsson and M. Andersson. Omola---An Object-oriented Modeling Language. In M. Jamshidi and C.J. Herget, editors, Recent Advances in Computer-Aided Control Systems Engineering. Elsevier Science Publishers, 1993.

....and engineering design languages have been developed over the past decades. Examples include Simulink with the integration of Stateflow [17] analog and mixed signal extensions of hardware description languages such as VHDLAMS and Verilog AMS [5] object oriented modeling frameworks such as Omola[26] and Modelica [14] 30] and the hybrid concurrent constraint language HCC [16] These approaches typically assume a unified model, such as a continuous time model with discontinuities, to capture semantically different components, but lack information hiding to help scale up designs. All modeling ....

S.E. Mattsson and M. Andersson, "Omola - An Object Oriented Modeling Language," in Jamshidi and Herget, editors, Recent advances in computer-aided control systems engineering, volume 9, pp. 291310, 1993

....Nevertheless, it is possible to link, in an organized way, mathematical models to each of the icons (objects) used in schematic diagrams, provided we know the context in which the objects are being used. This is the approach adopted in so called object oriented modelling languages such as Omola [15, 3] and Dymola [5] see Figure 2.2. Links between objects and mathematical relations describing the behaviour of each object are here made explicit. Once the behaviour of the individual objects has been specified, the composed overall model can be automatically generated. This compositional approach ....

S.E. Mattsson and M. Andersson. Omola - An object oriented modeling language. In Jamshidi and Herget, editors, Recent advances in computer-aided control systems engineering, volume 9, pages 291--310, 1993.

....inheritance, encapsulation and polymorphism (Winblad et al. 1990, Rumbaugh et al. 1991) Object oriented modelling was first addressed by Elmqvist (1978) who developed a general modelling language for large continuous systems. This work has lead to the development of Omola (Nilsson 1993, Mattson and Andersson 1992). In this work we use the concept of object orientation to define model building blocks on two abstraction levels: 1) the topological level and 2) the phenomenological level. Hence, instead of defining models based on mathematical equations directly, we attempt to move focus from an ....

Mattson, Sven Erik and Mats Andersson (1992). Omola - an objectoriented modeling language. In: Recent Advances in ComputerAided Control Systems Engineering (M. Jamshidi and C. J. Herget, Eds.). Elsevier Science Publishers B.V.

....structure of object oriented modelling languages such as Omola Dymola. models to each of the icons (objects) used in schematic diagrams, provided we know the context in which the objects are being used. This is the approach adopted in so called object oriented modelling languages such as Omola [7, 2] and Dymola [4] see Figure 4. Links between objects and mathematical relations describing the behaviour of each object are here made explicit. Once the behaviour of the individual objects has been specified, the composed overall model can be automatically generated. This compositional approach is ....

S.E. Mattsson and M. Andersson. Omola - An object oriented modeling language. In Jamshidi and Herget, editors, Recent advances in computer-aided control systems engineering, volume 9, pages 291--310, 1993.

....and hardware components. We present the basic ideas underlying bond graphs in general and switched bond graphs in particular. We compare briefly the bond graph approach to physical systems modelling with the recently proposed object oriented approach as represented by e.g. Omola and Dymola [8, 3]. Switched bond graphs were introduced in 1993 [16] as an extension to classical bond graphs in order to deal with hardware undergoing abrupt structural changes; so called mode switching physical systems. Such behaviour is common in general but are particularly common in physical plants closed by ....

....Nevertheless, it is possible to link, in an organized way, mathematical models to each of the icons (objects) used in schematic diagrams, provided we know the context in which the objects are being used. This is the approach adopted in so called object oriented modelling languages such as Omola [8, 1] and Dymola [3] see Fig. 2. Links between objects and mathematical relations describing the behaviour of each object are here made explicit. Once the behaviour of the individual objects has been specified, the composed overall model can be automatically generated. This compositional approach is ....

S.E. Mattsson and M. Andersson. Omola - An object oriented modeling language. In Jamshidi and Herget, editors, Recent advances in computer-aided control systems engineering, volume 9, pages 291--310, 1993.

....by engineers. For the systematic construction of models of systems involving only continuous behavioural changes, there are many powerful methods. Many of these methods have also been used in the development of existing computer aided modelling systems, as for example CAMAS [ Uni, 1993 ] OMOLA [ Mattson and Andersson, 1993 ] and DYMOLA [ Dyn, 1994 ] Other, more mathematically oriented modelling systems are SystemBuild [ Int, 1993 ] and Simulink [ Mat, 1992 ] 1 . However, many engineering systems involve both continous and discrete behavioural changes. As a matter of fact, abrupt behavioural changes, which are ....

S.E. Mattson and M Andersson. Omola - an object oriented modeling language. In Jamshidi and Herget, editors, Recent advances in computer-aided control systems engineering, volume 9, pages 291--310. Elsevier, 1993.

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S. E. Mattsson and M. Andersson, "Omola---An Object-Oriented Modeling Language," in Recent Advances in Computer-Aided Control Systems Engineering, M. Jamshidi and C. J. Herget, eds., vol. 9 of Studies in Automation and Control, pp. 291--310, Elsevier Science Publishers, 1993.

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