NDLI: Robust deadlock avoidance control for AMSs with assembly operations embedded in flexible routes using Petri nets

Content Provider	IET Digital Library
Author	Du, Nan Hu, He Suan
Abstract	Deadlock-free supervisory control for automated manufacturing systems (AMSs) has been a popular research subject. However, for numerous researchers, their studies are merely practicable on the assumption that resources cannot fail. In practice, resource failures can occur unexpectedly. In this study, the authors take into consideration deadlock and blocking problems in systems with assembly operations embedded in flexible routes. Their objective is to develop a robust supervisor that controls resource allocation and selects flexible routes such that stagnant parts requiring failed resources do not block the movement of parts not necessarily requiring failed resources. That is to say, it must ensure that parts not necessarily requiring any failed resource can continue their operations. The proposed policy tries to take full advantage of the shared resource capacity to improve systems' performance. By modelling AMSs with Petri nets, their robust supervisor predicts in advance whether the currently-available resources are sufficient to support a token to advance into the desired destination in a single process. The method is achieved in an online and distributed way and avoids enumerating states. At last, several simulation examples show the correctness of their proposed method.
Starting Page	1579
Ending Page	1590
Page Count	12
ISSN	17518644
Volume Number	13
e-ISSN	17518652
Issue Number	Issue 11, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2018.5398
Journal	IET Control Theory & Applications
Publisher Date	2019-02-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AMSs Assembly Operations Automated Manufacturing System Blocking Problem Combinatorial Mathematics Consideration Deadlock Control Application in Manufacturing Processes Control Technology And Theory Currently-available Resources Deadlock-free Supervisory Control Discrete Event System Failed Resource Flexible Manufacturing System Flexible Routes Manufacturing System Numerous Researchers Petri Nets Popular Research Subject Resource Allocation Resource Failure Robust Control Robust Deadlock Avoidance Control Robust Supervisor Shared Resource Capacity Stability in Control Theory Stagnant Parts
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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