Formal engineering methods for modelling and verification of control systems

Colloque avec actes et comité de lecture.This paper highlights the benefits of formal methods to improve the quality and efficiency of process control engineering, according to two key aspects: the definition of a formal engineering framework which allows the re-usability of specifications at a high level of abstraction and the ability to prove some properties of the process control models. An introductory example presents a formal structuring framework using the B method and highlights the main temporal requirements for modelling and proving control systems in this framework. Taking into account these temporal modalities requires an extension of the B model. An attempt using \textsc{TLA} is suggested and discussed