H. Elmquist and S. E. Mattson. Modelica -- the next generation modeling language -- an international design e#ort. In First World Congress of System Simulation, Singapore, 1997.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....area of modeling and simulation [20] These efforts have to be combined with the development of coordination languages [7] which have to be tailored to the needs of agent oriented simulation. This might lead to the development of yet another neutral model solver protocol [1] like e.g. Modelica [9]. Thus, we envision modeling and simulation methods and tools which support a flexible and comfortable composition of test environments for multi agent systems by re using models of different languages and by an interoperation with other simulation systems that takes into consideration the ....

H. Elmquist and S.E. Mattson. Modelica - The Next Generation Modeling Language - An International Design Effort. In First World Congress of System Simulation, Singapore, 1997.

....equations (DAEs) There is a need for extending Modelica to also support modeling with PDEs. This paper presents some ideas on such extensions to the Modelica language, that would allow formulation of PDE problems defined on general domains using objects. 1 Introduction Modelica [4, 5, 3, 1] is a general, high level language for object oriented modeling with differentialalgebraic equations (DAEs) The aim of the Modelica language is to represent models in a general, domainindependent way. Using object oriented constructs, Modelica supports reuse of existing models and model ....

H. Elmqvist and S.E. Mattsson. Modelica -- the next generation modeling language -- an international design effort. In Proceedings of the First World Congress on System Simulation, Singapore, Sept. 1--3 1997.

....Design Group [25] which includes participants from both universities and industry. The result of this development has been reflected in the Modelica language specification [26] A tutorial and rationale for the language can be found in [27] An overview of Modelica is given in an early paper [7], and in a more comprehensive paper [8] by Martin Otter, Hilding Elmqvist, and Sven Erik Mattsson emphasizing the multi domain modeling capabilities of the language, as well as in a paper by Peter Fritzson and the author [19] emphasizing its object oriented properties. Hybrid modeling in ....

Hilding Elmqvist, Sven-Erik Mattsson. Modelica -- The Next Generation Modeling Language -- An International Design Effort. In Proceedings of First World Congress of System Simulation, Singapore, September 1--3 1997.

....Modelica language specification [43] A tutorial and rationale for the language can be found in [44] The first version of Modelica, version 1.0, was announced in September 1997. The most recent, version 1.3, was released in December 15, 1999. An overview of Modelica is given in an early paper [17], and a more comprehensive paper [18] by Martin Otter, Hilding Elmqvist, and Sven Erik Mattsson emphasizing the multi domain modeling capabilities of the language, as well as in a paper by Peter Fritzson and the author [31] emphasizing its object oriented properties. Hybrid modeling in ....

Hilding Elmqvist, Sven-Erik Mattsson. Modelica -- The Next Generation Modeling Language -- An International Design Effort. In Proceedings of First World Congress of System Simulation, Singapore, September 1--3 1997.

....than straightforward written C code, because additional opportunities for symbolic optimization are used. 3.3 Current status Language definition. As a result from 8 meetings in the period September 1996 September 1997 the first full definition of Modelica 1. 0 was announced in September 1997 [23, 29]. Work started in the continuous time domain, since there is a common mathematical framework in the form of differential algebraic equations and there are several existing modeling languages based on similar ideas. There is also significant experience of using these languages in various ....

H. Elmqvist, S. E. Mattsson: "Modelica - The Next Generation Modeling Language - An International Design Effort". In Proceedings of First World Congress of System Simulation, Singapore, September 1-3 1997.

....model structure visualizations: class diagrams . variable dependency diagrams . data structure diagrams THE MODELICA LANGUAGE The language called Modelica (Modelica 1998) for hierarchical physical modeling is developed through an international effort. It is an object oriented language (Elmqvist, 1997, Fritzson and Engelson, 1998) for modeling of physical systems. The language unifies and generalizes previous object oriented modeling languages. Modelica is intended to become a de facto standard. It offers three important features: 1) non causal modeling based on differential and algebraic ....

....a numerical solution of the system of ordinary differential equations. All model variables are functions of (modeled) time during the simulation. The simulation engine is a fairly complex piece of software that can be implemented in many different ways. In each case this engine sorts equations (Elmqvist, 1997), finds algebraic loops, checks consistency of ordinary differential equations (ODE) controls an ODE solver, and computes requested variable values from the found solution. Existing Environment and Need for MathModelica There exists an environment for the Modelica language and engine for ....

Elmqvist, H., Mattson, S.E., Modelica - The Next Generation Modeling Language - An International Design Effort, in Proceedings of First World Congress of System Simulation, Singapore, September 1-3, 1997.

....form (if possible) requires extra engineering skills and the resulting equations often do not reflect the natural system structure. With the advent of DAE solvers that can solve the implicit state space form f x, x, 0 ( # ) t = hybrid languages do not need to employ causal relations any more [13,14]. 3.3 Master object From the model s topology, first the sets of connected variables that are equal, are identified. For each set, a master object is introduced, which holds the value of the connection. This value is distributed among the variables at the end of each continuous phase. During the ....

H. Elmqvist, and S.E. Mattson. "MODELICA - The next generation modeling language - an international design effort." In Proceedings of the 1st World Congress on System Simulation , WCSS'97, Singapore, 1997.

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H. Elmquist and S. E. Mattson. Modelica -- the next generation modeling language -- an international design e#ort. In First World Congress of System Simulation, Singapore, 1997.

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