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Automatic synthesis of controllers from formal specifications

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1 Author(s)
Tronci, E. ; Dipt. di Matematica Pura ed Applicata, l''Aquila Univ., Italy

Many safety critical reactive systems are indeed embedded control systems. Usually a control system can be partitioned into two main subsystems: a controller and a plant. Roughly speaking: the controller observes the state of the plant and sends commands (stimulus) to the plant to achieve predefined goals. We show that when the plant can be modeled as a deterministic finite state system (FSS) it is possible to effectively use formal methods to automatically synthesize the program implementing the controller from the plant model and the given formal specifications for the closed loop system (plant+controller). This guarantees that the controller program is correct by construction. To the best of our knowledge there is no previously published effective algorithm to extract executable code for the controller from closed loop formal specifications. We show practical usefulness of our techniques by giving experimental results on their use to synthesize C programs implementing optimal controllers (OCs) for plants with more than 109 states

Published in:

Formal Engineering Methods, 1998. Proceedings. Second International Conference on

Date of Conference:

9-11 Dec 1998