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Method for generating suboptimal supervisory controller of discrete event system

A discrete event, controller technology, applied in the direction of total factory control, total factory control, electrical program control, etc.

Active Publication Date: 2017-11-10
XI AN JIAOTONG UNIV
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Problems solved by technology

Existing techniques only study the generation of optimal supervisory controllers

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  • Method for generating suboptimal supervisory controller of discrete event system
  • Method for generating suboptimal supervisory controller of discrete event system
  • Method for generating suboptimal supervisory controller of discrete event system

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Embodiment Construction

[0045] The present invention is described in further detail below in conjunction with accompanying drawing:

[0046] refer to figure 1 , the discrete event system suboptimal supervisory controller generating method of the present invention comprises the following steps:

[0047] 1) Build each component G in the system through TCT software i The automata model PLANTi=(Q i ,Σ i ,δ i ,q i0 ,Q im ), where Q i , Σ i ,δ i ,q i0 and Q im are respectively the state collection, event collection, transition function, initial state and identification state collection of the i-th component, and according to each component G i The automaton model PLANTi uses the synchronous product instruction to calculate the global automaton model PLANT of the system;

[0048] 2) Transform the performance index E described in the text into the automaton model SPEC of the performance index E A0 ;

[0049] 3) According to the automaton model SPEC of the performance index E A0 And the global ...

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Abstract

The invention discloses a method for generating a suboptimal supervisory controller of a discrete event system. The method comprises the following steps of 1, constructing an automaton model PLANTi= (Qi, sigma i, delta i, qi0, Qim) of each component Gi in the system, wherein Qi, sigma i, delta i, qi0 and Qim are a state set, event set, transfer function, initial state and identity state set of the ith component respectively, and calculating a global automaton model PLANT of the system; 2, converting performance indexes E described by characters into an automation model SPECA0 of the performance indexes E; 3, calculating an event set DAT and an uncontrollable event weight DATu when each state of the performance indexes E is forbidden; 4, calculating an adjacent controllable event set J (sigma) corresponding to each uncontrollable event sigma and an event set sigma defined with sigma at the same time in the automaton model PLANTi of each component Gi; 5, obtaining a set delta formed by the transfer functions of the automation model SPECA0 of the performance indexes E; 6, generating the suboptimal supervisory controller of the discrete event system according to the set delta formed by the transfer functions of the automation model SPECA0 of the performance indexes E. Through the adoption of the method, the suboptimal supervisory controller of the discrete event system can be generated according to the performance indexes.

Description

technical field [0001] The invention belongs to the theoretical field of discrete event system supervisory control, and relates to a generation method of a discrete event system suboptimal supervisory controller. Background technique [0002] Discrete-Event Systems (DES for short), such as flexible manufacturing systems, computer and communication networks, robots, traffic control systems, logistics and database management systems, have always been one of the research hotspots in the field of control theory. The idea of ​​discrete event system supervisory control is to first establish the automaton model corresponding to the controlled object and the automaton model corresponding to the performance index that the system needs to meet, and then use the TCT software to calculate the optimal performance index that meets the performance index requirements and the controlled object is controllable. An optimal supervisory controller means that under the supervision of the optimal ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G05B19/418
CPCG05B19/418G06F30/20Y02P90/02
Inventor 甘永梅焦亭
Owner XI AN JIAOTONG UNIV
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