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Controller automata, adopting an unbounded stack, provide sequential execution of a group of timed automata according to various priority policies. When a preemption between two processes is considered, a time lag function is used to transform a timed automaton into one that waits a certain time when preempted by another timed automaton. This paper proposes a static algorithm for timed lag by cloning...
Timed automata are popular for formally analyzing real-time systems. However, it is difficult to depict real-time systems with compositional components that interact with each other in a synchronization way or a mutex way. Synchronized components are modeled using parallel composition of timed automata by Larsen et al. This paper proposes controller automata to represent real-time systems with mutex...
Interrupts are important aspects of real-time embedded systems to handle events in time. When there exist nested interrupts in a real-time system, and an urgent interrupt is allowed to preempt the current interrupt handling, the design and analysis of the system become difficult due to the lack of appropriate behavioral models. This paper proposes a compositional model for nested interrupts and an...
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