Contributions to the control of Time-Weighted Systems

This paper presents some contributions to a time-optimal control framework based on Time-Weighted Systems (TWS). A two-steps control synthesis method is proposed, where, first, given a TWS and a set of safety and coordination requirements, a supervisor to guarantee the former is synthesized, and, se...

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Bibliographic Details
Published in:	2018 IEEE 23rd International Conference on Emerging Technologies and Factory Automation (ETFA) Vol. 1; pp. 418 - 425
Main Authors:	Monteiro Tuxi, Thiago, Carrilho da Cunha, Antonio Eduardo
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-09-2018
Subjects:	Automata Electrical engineering Electronic mail makespan Supervisory control Task analysis time-weighted systems
Online Access:	Get full text
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Summary:	This paper presents some contributions to a time-optimal control framework based on Time-Weighted Systems (TWS). A two-steps control synthesis method is proposed, where, first, given a TWS and a set of safety and coordination requirements, a supervisor to guarantee the former is synthesized, and, second, given a required number of productions, a supervisor that guarantees the minimum makespan (production time) is computed. We also propose a realization of a timed supervisory control map for a TWS that is robust with respect to variations on event execution times and that contains a simple control law suitable for implementation in platforms like PLCs or microcontrollers. We illustrate our approach using two Flexible Manufacturing Systems (FMS) case studies.
ISSN:	1946-0759
DOI:	10.1109/ETFA.2018.8502616