The interaction between scheduling and control of semi-cyclic hybrid systems

T.J.J. van den Boom, H. De Bruijn, B. de Schutter, L. Ozkan

Research output: Contribution to journalConference articleAcademicpeer-review

1 Citation (Scopus)

Abstract

In this paper a new iterative approach is proposed for the design of a combined real-time scheduling and control algorithm that can be applied to industrial systems that are described by a hybrid model with a (semi-)cyclic behavior. Traditionally scheduling and control problems are considered in a sequential way. First the scheduling problem is solved and subsequently the control problem. This may result in inconsistent solutions such that the system may not operate adequately and does not reach the desired operational targets. In our approach scheduling is done with model predictive control using a switching max-plus linear model of the discrete event part of the system. The interface with a reference generator determines whether the computed reference signal will lead to a feasible response. Furthermore, it estimates the duration of the operations in the system based on the actual state, and communicates that with the scheduler. In an iterative procedure the optimal and feasible schedule can be computed. In a case study the railway traffic on a single track is considered, showing that updating the schedule results in feasible local speed profiles for the trains and less delay in the overall system in case of a delay.

Original languageEnglish
Pages (from-to)212-217
Number of pages6
JournalIFAC-PapersOnLine
Volume51
Issue number7
DOIs
Publication statusPublished - 30 May 2018
Event14th International Workshop on Discrete Event Systems (WODES 2018) - Towers Hotel Stabiae Sorrento Coast, Sorrento Coast, Italy
Duration: 30 May 20181 Jun 2018
Conference number: 14
http://wodes2018.unisa.it/

Keywords

  • Control
  • Hybrid Systems
  • Iterative methods
  • Scheduling algorithms
  • Switching Max-Plus linear systems

Fingerprint Dive into the research topics of 'The interaction between scheduling and control of semi-cyclic hybrid systems'. Together they form a unique fingerprint.

  • Cite this