Modeling hard real time systems with UML the OOHARTS approach

The use of object oriented techniques and methodologies for the design of hard real time systems appears to be necessary in order to deal with the increasing complexity of such systems. Recently many object oriented methods have been used for the modeling and the design of real time systems. Due to their complex nature, such systems are extremely difficult to specify and to implement. The use of an appropriate design method that supports both the modeling of the functional and the non-functional requirements of such systems is a crucial prerequisite for the successful modeling of such systems. In this paper Ne propose our approach, which enables the development of hard real time systems using UML and other notations enabling both the analysis of the functional requirements as well as the analysis of the non-functional requirements.