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Methodological Guidelines for Modelling and Design of Embedded Systems

Author: Sune Wolff, Aarhus University Department of Engineering, Denmark


e-ISBN: 9788792982033

Price: Notify Me

Available: September 2013
Downloads: [2247]

Downloads: [2247]  
Technical | Layman

Layman Description:

We are literally surrounded by small computers solving various tasks for us. Examples include small systems like a microwave; a digital egg timer; the controller managing the automatic defroster in a refrigerator as well as systems of much larger scale like the engine management processor in a modern car; traffic lights along the roads; satellites; aircraft guidance systems; air traffic control systems; nuclear power plants. These systems are called embedded systems and can be found all around us, and only few realize their contribution in making our life comfortable and safe.

Viewed from both technical and commercial perspectives, the development of embedded systems --consisting of software, electronics and mechanical components that operate in a physical world-- is a demanding discipline. Technical challenges arise from the need to develop complex, feature rich products that take the constraints of the physical world into account. The task is made even more challenging due to the fact that these types of systems often are developed out of phase: initially the mechanical parts are designed, followed by the electronics and finally software is designed. Problems discovered late in the development process can only be corrected in the software without causing huge delays to the complete project. This is due to the longer iterative cycles in electronics and mechanical development. These late changes often increase the complexity of the software and the risk of introducing new errors. Hence, an otherwise well-designed software solution could be compromised. In order to avoid situations like this, early analysis and feedback at a systems level is necessary.

This PhD dissertation describes the results of an Industrial PhD made in collaboration between Terma A/S and Aarhus University. The research focusses on the creation of multidisciplinary models of embedded control systems. It was studied how a model of the discrete controller and a model of the environment can be combined into a collaborative model and evaluated using co-simulation. The main research contribution is a collection of lightweight methodological guidelines that aid the user in the construction of such collaborative models. These guidelines conform to industry-strength development processes. The use of the guidelines is demonstrated by means of several industrial case studies from the electronic warfare domain.


Keywords:

Methodological guidelines