Observation of Unmeasurable States by Means of Qualitative Models
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چکیده
In control engineering, diagnosis and process supervision are important tasks where qualitative models can be applied. In this paper, the problem of observing the internal states of a dynamical system is solved by means of a qualitative model that has the form of a nondeterministic automaton. In the qualitative observation problem, the current qualitative state of a system has to be inferred from measurement sequences of qualitative inputs and outputs. An observation algorithm is described and illustrated by applying the algorithm to a three-tank system. Due to the structure of the qualitative model used, the observation algorithm can be practically applied under real-time constraints .
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