Composable Models for Simulation-Based Design (original) (raw)

Integration of Mechanical CAD and Behavioral Modeling

2000

This article introduces the concept of combining both form (CAD models) and behavior (simulation models) of mechatronic system components into component objects. By composing these component objects, designers automatically create a virtual prototype of the system they are designing. This virtual prototype, in turn, can provide immediate feedback about design decisions by evaluating whether the functional requirements are met in simulation.

A component oriented approach to multidisciplinary simulation of mechatronic systems

Due to the multidisciplinary and complex structure of mechatronic products, their complete modeling and simulation is a hard challenge. On the other hand complete models are a key element of the development process of mechatronic systems. Starting from proofed modeling methods for mechanical, electrical and software systems, an integrated component oriented method for the modeling and simulation of multidisciplinary mechatronic systems will be presented in this paper. The basic concept uses components that represent shape/geometry and functions of real world components. Well defined external interfaces allow combining several components to build up more complex ones leading to complete systems in a straightforward bottom up process. The automated generation of multidisciplinary simulation models in semisymbolic form from extended 3D-CAD models is a key element of the method that guarantees the consistency of generated models avoids errors of manual modeling and reduces modeling effort significantly. Applying the generation process on single components, result in very compact and efficient simulation code. The models are used on a mixed continuous / discrete simulation platform that preserves the component structure of the models during simulation, which allows the simulation of large systems on the basis of verified precompiled subcomponents. The support of modules, usually restricted to the specification of mechatronic systems, in our approach is continued to the simulation model which results in encapsulated robust simulation models.

Behavioral Model Composition in Simulation-Based Design

2002

We present a simulation and design framework for simultaneously designing and modeling electromechanical systems. By instantiating component objects and connecting them to each other via ports, a designer can configure complex systems. This configuration information is then used to automatically generate a corresponding system-level simulation model.

Component Based Virtual Models of Mechanical Parts of Mechatronic Systems

This paper presents a tool for the development of virtual reality of mechanical parts of mechatronic systems. The most important aspects of engineering of mechanical systems are implemented in code: designing and documenting 3D parts and assemblies, numerically efficient simulation and stabilization of designed models. Despite other tools, that one keeps the object-oriented approach during the design and the simulation of models. • Subsystems can be modelled, tested and compiled. Then they can be used in a way similar to software components that encapsulate their internal structure and can be connected via interfaces. • The commercial classified information of submodels is protected. A submodel works like a "black box" that has to provide only the strictly determined set of information via its interfaces. The submodel's internal data: parameters of constraints, forces, masses of internal bodies, etc. are unknown to the users of submodels. • Critical effects like coulom...

A modular composable software architecture for the simulation of mechatronic systems

1998

This paper presents a software architecture for composing complete system-level simulations of mechatronic systems. The proposed architecture will provide the designer with the infrastructure to rapidly create simulations of alternative designs. The architecture promotes modularity and composability through the use of the design entity. Moreover, the architecture supports hierarchical modeling and provides the infrastructure to seamlessly integrate mechanics models with electronics and information technology models. Finally, the architecture facilitates distributed computing to take full advantage of the power of networked computers. This paper introduces the individual concepts of our architecture, and illustrates them in the design of a missile seeker.

04041 Abstracts Collection--Component-Based Modeling and Simulation}

… -Base Modeling and …

From 18.01.04 to 23.01.04, the Dagstuhl Seminar 04041 Component-Based Modeling and Simulation was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The rst section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available. Keywords. System-theoretic denitions and foundations for model-components, specication of model components, hierarchical, model-based model development cost-benet, quality, performance, relibility, and reusability aspects

Port-based modeling of mechatronic systems

Mathematics and Computers in Simulation, 2004

Many engineering activities, including mechatronic design, require that a multidomain or 'multi-physics' system and its control system be designed as an integrated system. This contribution discusses the background and tools for a port-based approach to integrated modeling and simulation of physical systems and their controllers, with parameters that are directly related to the real-world system, thus improving insight and direct feedback on modeling decisions.

Developing a flexible system-modeling environment for engineers

Proceedings of the 35th Annual Hawaii International Conference on System Sciences, 2002

We are developing a module-oriented, multiphysics, mixed-fidelity system simulation environment that will enable engineers to rapidly analyze the performance of a system and to optimize its design. In the environment, physical components of the system are represented by software components, and are linked by ports that transfer and transform data between them. The model fidelity in a composite module may be specified independently, e.g., one composite module may have a parametric model and another may have a three-dimensional finite-element model. In a prototype of the environment users can specify thermal radiation models for each system component, embed electrical circuits in each component, and set the external conditions for the system. During the simulation users can monitor the thermal and electrical behavior of the system. The latest software design for the environment promises greater flexibility in extending the environment for analyzing and optimizing a variety of complex systems.

SIMULATION-DRIVEN DESIGN OF COMPLEX MECHANICAL AND MECHATRONIC SYSTEMS

Effective and efficient product development is critical to business success on the increasingly competitive global market, and simulation has proven to support this in many sectors. The aim of this thesis is to study how properties of complex mechanical and mechatronic systems can be more efficiently and systematically predicted, described , assessed and improved in product development. The purpose is to elaborate an approach that can, rather than only verifying solutions that are already decided upon, support dialogues with customers, stimulate creation of new concepts and provide guidance towards more optimised designs, especially in early development stages. This is here termed simulation-driven design. To be useful for this, product models and simulation and optimisation procedures must be efficient , that is, they must accurately answer posed questions and point towards better solutions while consuming an acceptable amount of time and other resources. In this thesis a coordinated approach to create such efficient decision support is elaborated. This is done by action research through two industrial case studies; an automobile exhaust system representing a complex mechanical system and a water jet cutting machine representing a mechatronic system. The general knowledge gained from these case studies should be a good base for coming implementation of this approach as an inherent working routine in companies developing complex mechanical and mechatronic products. A specific result is a validated virtual model of the exhaust system, which facilitates fast structural dynamics simulation of customer proposed design layouts. It is also shown that the non-linear flexible joint between the manifold and the rest of the exhaust system makes the system behaviour complex. This has resulted in an additional general research question, namely how systems that are linear, except for small but significant non-linear parts, can be simulated in an efficient way. Another specific result is a validated real-time virtual machine concept for simulation of the water jet cutting machine, which facilitates early-stage design optimisation. As the mechanics and the control system are considered simultaneously, interaction effects can be utilised. An introductory optimisation study shows a significant potential for improved manufacturing accuracy and a more lightweight design. This potential would not likely have been found through a conventional sequential design approach. The results of this thesis indicate that there is a great potential for improved product development performance in small and medium-sized companies. By incorporating modern simulation support these companies can improve their competitiveness as well as contribute to improved resource efficiency of society at large. In doing so, it is important to find a good balance between model fidelity, validity and cost for achieving a relevant decision support. The coordinated approach to simulation-driven design elaborated in this thesis is a promising and systematic way of finding this balance.

Modelling and Simulation for the Integrated Design of Mechatronic Systems

IFAC-PapersOnLine, 2015

The development of mechatronic systems involves the use of multiple disciplines, from mechanical engineering to electronics engineering and computer science. Traditionally, every discipline was developed independently and then integrated to generate the final system. However, high quality designs cannot be achieved without simultaneously considering all the engineering disciplines. This mechatronic approach carries intrinsic complexity into system design process and numerous researches are on-going in order to find out optimal methods. This article refines a SysML-based design process for the high level development of mechatronic systems, focusing on the integration of modelling and simulation as fundamental aspect for an integrated approach. How conceptual SysML diagrams may support the generation of simulation models is shown, along with a chain of simulations for an integrated design. The proposed approach is applied to a prototype case study designed from scratch, in order to be validated and to demonstrate its potentiality.