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Method for processing event-triggered network T-S fuzzy system packet loss

An event-triggered, fuzzy system technology, applied in transmission systems, signal transmission systems, digital transmission systems, etc., can solve the problem of limited network resources, not considering the packet loss problem of nonlinear network systems Transmission and other issues to achieve the effect of reducing utilization

Active Publication Date: 2019-01-18
HUZHOU TEACHERS COLLEGE
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of the existing technology, the present invention is: for the problem of limited network resources, the prior art does not consider the combination of the packet loss problem of the nonlinear network system and the event trigger mechanism, and the traditional periodic sampling is not suitable for data transmission. A Method for Handling Packet Loss in Networked Systems Integrating T-S Fuzzy Model, PDC Technique, Event Trigger and Controller

Method used

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  • Method for processing event-triggered network T-S fuzzy system packet loss
  • Method for processing event-triggered network T-S fuzzy system packet loss
  • Method for processing event-triggered network T-S fuzzy system packet loss

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Embodiment Construction

[0028] The controlled object is a kind of nonlinear discrete object, consider the following T-S fuzzy model:

[0029] When ζ 1 (k) is M i1 ,...,ζ s (k) is M is ,but

[0030]

[0031] where i∈S r ;r represents the number of fuzzy inference rules, x(k)∈R n , u(k)∈R m and z(k)∈R m represent the state of the controlled object, the control input and the controlled output vector of the system respectively, and the external disturbance ω(k) satisfies ω(k)∈l 2 [0,∞). Matrix A i ,B i ,C i ,D i and B ωi (i∈S r ) is dimension-appropriate and known, M ij (i∈S r ,j∈S s ) is a fuzzy set, by The membership function M on ij (ζ j (k)) to describe, the antecedent variable ζ(k)=[ζ 1 (k), ζ 2 (k),...,ζ s (k)] T is defined in A known function of x(k) on .

[0032] Then the final output of the fuzzy system (1) is:

[0033]

[0034] in, m ij (ζ j (k))(i∈S r ,j∈S S ) is ζ j (k) belongs to M ij degree of membership, and

[0035] event trigger mechanism

[0...

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Abstract

The invention discloses a method for processing network T-S fuzzy system packet loss based on event trigger. Stability and H infinite performance analysis is carried out on nonlinear NCSs (Networked Control Systems) based on an event trigger mechanism, wherein the nonlinear NCSs contain a data packet loss problem. A multichannel event trigger mechanism (ETM) policy based on relative errors is provided. The data packet loss problem and an H infinite state feedback control problem of a kind of nonlinear NCSs are researched. Data packet loss is described as an independent identically distributedBernoulli process. A system model is established through utilization of a T-S fuzzy model and a PDC technology is imported, so a state feedback controller is designed. On the basis of the model, a sufficient condition for existence of a controller which satisfies a system mean square stability demand and an improved H infinite performance index is provided, through utilization of an LMI theory anda Lyapunov-Krasovskii function method. Due to faction of an event trigger, a data transmission rate of a node is obviously reduced.

Description

technical field [0001] The invention relates to the control field of networked systems, in particular to a method for dealing with the packet loss problem of a network T-S fuzzy system triggered by an event. Background technique [0002] In modern life and production where communication technology, wireless sensor technology and signal processing technology are developing rapidly, the traditional control system can no longer meet the growing production technology. The network routing, network bandwidth, and network traffic of the communication network are scheduled and controlled, so as to achieve real-time and effective control. In recent years, the research on Networked Control Systems (NCSs) has attracted great attention from all walks of life. [0003] Nowadays, due to the wide application of network technology, networking, distribution, intelligence and integration have become the mainstream development direction of control systems. The network delay and the limited b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C25/00G08C17/02H04L12/24
CPCG08C17/02G08C25/00H04L41/145
Inventor 李祖欣陈慧英许冬芹钱懿杜树新崔琛焕王燕锋薛彦
Owner HUZHOU TEACHERS COLLEGE
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