Efficient liveness assessment for traffic states in open, irreversible, dynamically routed, zone-controlled guidepath-based transport systems

0525397 - MÚ 2021 RIV US eng J - Journal Article
Reveliotis, S. - Masopust, Tomáš
Efficient liveness assessment for traffic states in open, irreversible, dynamically routed, zone-controlled guidepath-based transport systems.
IEEE Transactions on Automatic Control. Roč. 65, č. 7 (2020), s. 2883-2898. ISSN 0018-9286. E-ISSN 1558-2523
R&D Projects: GA ČR(CZ) GC19-06175J
Institutional support: RVO:67985840
Keywords : guidepath-based traffic systems * traffic liveness and its enforcement * deadlock avoidance
OECD category: Automation and control systems
Impact factor: 5.792, year: 2020
Method of publishing: Limited access
https://doi.org/10.1109/TAC.2019.2934427

Open, irreversible, dynamically routed, zone-controlled guidepath-based transport systems model the operation of many automated unit-load material handling systems that are used in various production and distribution facilities. An important requirement for these systems is to preserve the system liveness, i.e., the ability of each system agent to reach any location of the underlying guidepath network, by blocking those traffic states that will result in deadlock and/or livelock. The remaining set of traffic states are characterized as “live.” The worst-case computational complexity of the decision problem of assessing the state liveness in the considered class of transport systems is an open issue. As a first contribution of this paper, we identify an extensive subclass of these traffic states, defined through the topology of an abstracting graphical representation of the “traffic state” concept, for which the corresponding problem of liveness assessment admits a polynomial solution.
Permanent Link: http://hdl.handle.net/11104/0309547