A Robust Control Method for Automatic Manufacturing Systems Existing Unobservable Behaviors
A technology of automatic manufacturing system and control method, which is applied in the directions of adaptive control, general control system, control/regulation system, etc., can solve the problem of system control strategy, the research difficulty is increased, the research results of discrete control system are lacking, and the theoretical system has not been formed. and other problems, to avoid the state space explosion, improve the robustness, and reduce the amount of calculation.
Active Publication Date: 2021-05-11
XIDIAN UNIV
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Problems solved by technology
The control strategy of discrete event systems has always been a hot topic in the field of automation control. When there are unseen events in the manufacturing system, the research on the control strategy of the system becomes more difficult.
At present, domestic and foreign research results on discrete control systems with unobservable behaviors are relatively scarce, and a complete theoretical system has not been formed.
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[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0031] Petri net is a mathematical modeling tool for discrete parallel systems. It describes the system model through the network state. It not only has strict mathematical expression, but also has intuitive graphic presentation. It focuses on various state changes that may occur in the system. and the changes between corresponding changes.
[0032]Petri net is a network structure model composed of two nodes, places and transitions, connected by directed arcs. A directed arc with a weight can point from a place to a transition, or from a transition to a place. In the structural graphic description of Petri nets, a place, represented by a circle, represents a possible local state in the system; a transition, represented by a square, represents an event that changes the state of the system; an arc ( arc), connecting the circle and the square, the circle represents th...
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The robustness control method of automatic manufacturing system with unobservable behavior, based on the Petri net model framework, studies the robust supervisory control strategy of unobservable events in automatic manufacturing system with known and unknown resources. Flexible path selection for processing and manufacturing systems with unobservable events, while considering the existence of unreliable resources, so that when there are unobservable events in the automatic manufacturing system, even if some unreliable resources in the processing path fail, through supervisory control The strategy makes reasonable planning and flexible selection of processing paths, which can ensure the normal operation of processing paths that do not use unreliable resources, and temporarily stop processing for processes that use unreliable resources until the resource fault is repaired, so as to avoid damage to the entire automatic manufacturing system caused by resource faults. Fall into a paralyzed state, causing huge economic losses.
Description
technical field [0001] The invention belongs to the technical field of automatic manufacturing systems, and relates to a robust control method for an automatic manufacturing system with unobservable behaviors, which can perform flexible path selection for petri nets with unobservable changes. Background technique [0002] The rapid development of the economy has led to rising labor costs at home and abroad, increasing the pressure on enterprises to survive. In order to reduce production costs and improve production efficiency, the automation of industrial control has become an irreversible trend. Driven by a number of high-tech technologies such as computer science, information technology and artificial intelligence, the automation level of equipment is increasing day by day, the scale of the system is gradually expanding, and the function and complexity are also increasing rapidly. However, in the process of processing and manufacturing, if the monitoring measures are not p...
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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 樊一宏胡核算卫屏
Owner XIDIAN UNIV