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Computación y Sistemas

Print version ISSN 1405-5546


CRUZ PEREZ, Daniel; MEDEL JUAREZ, José de Jesús  and  GUEVARA LOPEZ, Pedro. Arrival Times Model for Concurrent Real-time Tasks. Comp. y Sist. [online]. 2009, vol.12, n.4, pp.460-473. ISSN 1405-5546.

A Real-time system implemented in a computer, interacts with the real physical world through variables conditioners (sensors, actuators, D/A and A/D converters) and processes each processing need as concurrent tasks with temporal deadlines. In general each variable of the dynamic process (inputs, outputs and states) is related with a specific task; if it is about a multivariable system then there is going to be a set of tasks for each variable where each will have to be answered correctly with temporal bounds. In this paper a mathematical model for the representation of arrival times of concurrent Real-time tasks is treated. Additionally a stability analysis is proposed.

Keywords : Real-time system; Task; Discrete event system; Transition function; Inter-arrivals.

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