Multi-agent system fault diagnosis method based on finite time observer

A multi-agent system and limited time technology, applied in the field of multi-agent systems, can solve the problems of limited time that cannot be pre-set, reduced diagnostic accuracy, and high cost, and achieves effective and accurate limited time online diagnosis and fault estimation, The effect of suppressing the influence

Active Publication Date: 2017-09-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still has the following deficiencies: First, although the method takes into account the existence of external interference, it only uses the design idea of ​​robust control to reduce its adverse effects on the fault diagnosis results to a certain extent in the design process, but cannot completely Elimination, which more or less caused the reduction of diag...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-agent system fault diagnosis method based on finite time observer
  • Multi-agent system fault diagnosis method based on finite time observer
  • Multi-agent system fault diagnosis method based on finite time observer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] The invention will be further described in detail below in conjunction with the drawings.

[0075] The present invention takes the following longitudinal motion equation of a vertical take-off and landing aircraft as the implementation object. Aiming at the actuator failure in its formation flight, it proposes a multi-agent system distributed fault diagnosis design method based on a finite time unknown input observer. The fault diagnosis method can improve the transient performance and convergence performance of fault diagnosis, so that the system can complete online diagnosis and fault estimation within a preset limited time;

[0076] Consider the following longitudinal motion equation of a vertical take-off and landing aircraft:

[0077]

[0078] Where x i (t) and y i (t) are the state vector and output vector of each agent, Represents the differential term of the state vector of each agent, u i (t) is the control input vector of each agent, f i (t) is system failure, d i (...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a multi-agent system fault diagnosis method based on a finite time observer, which belongs to the technical field of multi-agent systems. Through building a finite time unknown input observer in a certain specific agent, the fault of an adjacent agent is thus observed, and distributed fault diagnosis on the multi-agent system is realized. According to the distributed fault diagnosis design method designed in the invention, influences on fault diagnosis by external time-varying interference can be suppressed theoretically, and in a preset finite time, effective and accurate finite time online diagnosis and fault estimation can be carried out when fault happens to any agent in each adjacently-connected agent or fault happens to multiple agents at the same time.

Description

Technical field [0001] The invention relates to a fault diagnosis method of a multi-agent system based on a finite-time observer, and belongs to the technical field of application to a multi-agent system. Background technique [0002] In recent years, as a tool that can effectively handle complex systems, multi-agent technology has attracted widespread attention and has been applied in many important fields. However, the unique advantages of multi-agent systems, such as network links, free distribution, and information sharing, also make them more susceptible to failures. When a certain agent in the multi-agent system fails, the failure can affect other agents through the unique network link of the multi-agent system, so that the entire multi-agent system is subjected to severe tests. Therefore, in order to improve the stability and security of the multi-agent system, the fault diagnosis technology for it should also be given high attention. Fault diagnosis can be divided into ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05B23/02
CPCG05B23/0283
Inventor 张柯陈星星姜斌夏静萍
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap