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作者:Ziyue Ma , Zhiwu Li , Alessandro Giua
来源:[J].Automatica(IF 2.919), 2015, Vol.51, pp.131-134
摘要:Abstract(#br)This note shows by means of simple counterexamples that some key results presented by Luo et al. on the synthesis of maximally permissive supervisors based on the Uncontrollable Transition Gain Transformation method are incorrect. As a result, the transformation of i...
作者:Ziyue Ma , Zhiwu Li , Alessandro Giua
来源:[J].Automatica(IF 2.919), 2016, Vol.74, pp.238-246
摘要:Abstract(#br)In this paper a special type of nonlinear marking specifications called stair generalized mutual exclusion constraints (stair-GMECs) is defined. A stair-GMEC can be represented by an inequality whose left-hand is a linear combination of floor functions. Stair-GM...
作者:Ziyue Ma , Yin Tong ...
来源:[J].IFAC PapersOnLine, 2017, Vol.50 (1), pp.11175-11181
摘要:Abstract(#br)In this paper a method to recognize the set of consistent markings in labelled Petri nets is proposed. In this method, the set of unobservable transitions are partitioned into pseudo-observable and strictly unobservable ones, and the subnet induced by the latter is a...
作者:Ziyue Ma , Zhou He ...
来源:[J].IFAC PapersOnLine, 2018, Vol.51 (7), pp.374-380
摘要:Abstract(#br)In this paper we propose a method to compute a monitor-based supervisor that enforces a GMEC in labelled Petri nets. Due to the presence of indistinguishable transitions, an observable GMEC may not be enforceable by a monitor place in general. To solve this problem w...
作者:Ziyue Ma , Cui Zheng ...
来源:[J].Journal of Polymer Science Part A: Polymer Chemistry(IF 3.543), 2012, Vol.50 (5), pp.918-926
摘要:Abstract(#br)A series of novel comb polymers, poly{2,5‐bis[(4‐methoxyphenyl)oxycarbonyl]styrene}‐ g ‐polystyrene (PMPCS‐ g ‐PS), with mesogen‐jacketed rigid side chains were synthesized by the “grafting onto” method from α‐yne‐terminated PMPCS (side chain...
作者:Ziyue Ma , Zhihao Shen ...
来源:[J].Journal of Polymer Science Part A: Polymer Chemistry(IF 3.543), 2012, Vol.50 (9), pp.1792-1800
摘要:Abstract(#br)We synthesized a series of amphiphilic mesogen‐jacketed liquid crystalline (LC) polymers with a biphenyl side‐chain mesogen containing a carboxylic acid group on one side and an octyloxy group on the other, and the number of methylene units between the biphenyl ...
作者:Ziyue Ma , Zhiwu Li , Alessandro Giua
来源:[J].IFAC Proceedings Volumes, 2014, Vol.47 (2), pp.66-72
摘要:Abstract(#br)In this paper we study the problem of constraint transformation. We consider a special type of system in which the uncontrollable subnet is an assembly flow system, which is a subclass of backward-synchronization-backward-conflict-free Petri net. We propose an algori...
作者:Ziyue Ma , Zhiwu Li , Alessandro Giua
来源:[J].IFAC Proceedings Volumes, 2014, Vol.47 (3), pp.2429-2434
摘要:Abstract(#br)In this paper we study the problem of supervisory design using Petri nets. We consider a monolithic supervisor candidate, i.e., a net obtained by concurrent composition of plant and specification, and we say that the control problem has an OR-AND GMEC solution if the...

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