A Distributed Supervisory Control Method for Discrete Event Systems with Communication Delay

A technology of distributed controllers and discrete events, applied in the field of control theory of discrete event systems, can solve the problems of not considering the delay limit of communication events, affecting the application range of control methods of discrete event systems, etc., and achieve the optimal overall characteristics , The overall characteristic is non-blocking and the effect of convenient operation

Inactive Publication Date: 2016-08-17
XI AN JIAOTONG UNIV
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Problems solved by technology

However, the delay bound of each communication event is not considered, which seriously affects the application range of the control method of the discrete event system.

Method used

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  • A Distributed Supervisory Control Method for Discrete Event Systems with Communication Delay
  • A Distributed Supervisory Control Method for Discrete Event Systems with Communication Delay
  • A Distributed Supervisory Control Method for Discrete Event Systems with Communication Delay

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Embodiment Construction

[0038] The present invention is described in further detail below in conjunction with accompanying drawing:

[0039] refer to figure 1 , the discrete event system distributed supervisory control method with communication delay in the present invention comprises the following steps:

[0040] 1) Construct the automaton model G of each component model in the discrete event system i =(Q i , ∑ i ,δ i ,q i，0 , Q i，m ), where Q i is the state set of the discrete event system, ∑ i is the set of all events in the discrete event system, δ i is the state transition relation of the discrete event system, q i，0 is the initial state of the discrete event system, Q i，m It is the identification state set of the discrete event system, the overall model G of the discrete event system is obtained according to each component model, and the state transition relationship of the automaton model is represented by the state list State_list;

[0041] 2) Obtain the distributed controller LOC ...

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Abstract

The invention discloses a distributed supervisory control method for a discrete event system with communication delay, comprising the following steps: 1) Constructing an automaton model of each component model in the discrete event system, and obtaining the discrete event system according to each component model Overall model G; 2) Obtain the distributed controller LOC of each component model when the communication delay is zero i , and a distributed controller LOC i cause a state transition in the distributed controller LOC not in the i The events that occur in the corresponding component model are recorded as communication events; 3) Obtain the delay limit of each communication event. When each communication event is within the delay limit range, the overall characteristics of the discrete event system are optimal and not Blocking; 4) According to the delay limit of each communication event, each distributed controller relies on a corresponding communication model to complete the control of the discrete event system. In the present invention, when the communication delay is not zero, each distributed controller can still effectively control the implementation of the discrete event system.

Description

technical field [0001] The invention belongs to the field of control theory of discrete event systems, and relates to a distributed supervision and control method of discrete event systems with communication delay. Background technique [0002] Discrete event systems are common in public service facilities such as communication and transportation, various discrete production and processing processes such as machinery and electronics, multi-level management / control systems, computer information processing and other important technical fields. In recent years, with the rapid development of communication networks and embedded technologies, multi-module systems relying on communication to work together are spread throughout the engineering field (including discrete event systems, of course), which are called distributed systems; sensors in these distributed systems, Most of the actuators are distributed in different geographical locations, which makes the management of the syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 甘永梅张仁远
Owner XI AN JIAOTONG UNIV
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