Synthesis and implementation of supervisory control for manufacturing systems under processing uncertainties and time constraints. Issue 4 (2020)

• Record Type: Journal Article
• Authors: Szpak, Rodrigo; de Queiroz, Max Hering; Ribeiro Cury, José Eduardo
• Is Part Of: IFAC-PapersOnLine. Volume 53:Issue 4(2020)
• Page Start: 229
• Page End: 234
• Publication Date: 2020
• Subjects: Timed Modular Local Control -- Manufacturing Systems -- Programmable Logical Controller; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2021.04.071
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: In this paper, we exploit the supervisory control theory to synthesize a responsive control logic that assures non-blocking, safety, and time constraints in a manufacturing system subject to uncertain processing times arising from direct human intervention and flexible operations. A modular approach is used to compute a set of timed supervisors and a reduced coordinator that forces machine operations or inhibits human interventions in a minimally restrictive way. A new architecture for structured implementation of timed supervisors in programmable logic controllers is presented and applied to a real-world test-bench.