Kybernetika

Processes modeled by a timed event graph may be represented by a linear model in dio\"{\i}d algebra. The aim of this paper is to make temporal control synthesis when state vector is unknown. This information loss is compensated by the use of a simple model, the ``ARMA'' equations, which enables to introduce the concept of predictability. The comparison of the predictable output trajectory with the desired output determines the reachability of the objective.