Supervisory controller synthesis and implementation for safety PLCs
| Autor: | Jacobus E. Rooda, F.F.H. Reijnen, Joanna M. van de Mortel-Fronczak, Toby R. Erens |
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| Přispěvatelé: | Group Etman, Control Systems Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Supervisor
Finite-state machine Computer science Process (engineering) Control (management) Programmable logic controller Control engineering ComputerApplications_COMPUTERSINOTHERSYSTEMS Safety standards Bridge (nautical) Programmable logic controllers Control and Systems Engineering Control theory Modeling and Simulation Supervisory control theory Electrical and Electronic Engineering Industrial automation |
| Zdroj: | Discrete Event Dynamic Systems, 32, 115-141. Springer |
| ISSN: | 0924-6703 |
| Popis: | The development of supervisory controllers for cyber-physical systems is a laborious and error-prone process. Supervisor synthesis enables control designers to automatically synthesize a correct-by-construction supervisor from a model of the plant combined with a model of the control requirements. From the supervisor model, controller code can be generated which is suitable for the implementation on a programmable logic controller (PLC). Supervisors for industrial systems that operate in close proximity to humans have to adhere to strict safety standards. To achieve these standards, safety PLCs (SPLCs) are used. For SPLC implementation, the supervisor has to be split into a regular part and a safety part. In previous work, a method is proposed to automatically split a supervisor model for this purpose. The method assumes that the provided plant model is a collection of finite automata. In this paper, the extension to extended finite automata is described. Additionally, guidelines are provided for modeling the plant and the requirements to achieve a favorable splitting. A case study on a rotating bridge is elaborated which has been used to validate the method. The case study spans all development steps, including the implementation of the resulting supervisor to control the real bridge. |
| Databáze: | OpenAIRE |
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