Communication delay-existing discrete event system distributed supervision and control method

Abstract

The invention discloses a communication delay-existing discrete event system distributed supervision and control method. The communication delay-existing discrete event system distributed supervision and control method comprises the following steps that: 1) automata models of component models in a discrete event system are constructed, and an overall model G of the discrete event system is obtained according to the component models; 2) distributed controllers LOCi of the component models when communication delay is zero, and state shift is made to occur in one distributed controllers LOCi, and events that do not occur in a component model corresponding to the distributed controllers LOCi are recorded as communication events; 3) delay limits of each communication event are obtained, and when the communication events are located in the range of the delay limits, the total properties of the discrete event system are optimal and non-blocking; and 4) and the distributed controllers complete control on the discrete event system by means of corresponding communication models according to the delay limits of the communication events. With the communication delay-existing discrete event system distributed supervision and control method of the invention adopted, the distributed controllers can still effectively control the discrete event system when communication delay is not zero.

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...

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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.

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