On-board fault diagnosis system of automated manual transmission control system

This paper presents the design scheme of monitoring management and fault diagnosis of open CNC system based on Internet, the system hardware structure introduces network technology three-tier monitoring mode based on field control layer and process monitoring control layer and remote fault diagnosis layer, the system software design includes CNC system management and monitoring and fault diagnosis. The paper integrates condition monitoring and fault diagnosis and expert system technology into CNC system monitoring and management, and analyzes the requirements of distributed numerical control system, and details description system model of remote monitoring and fault diagnosis system. The practice has proved that the system design of open remote monitoring and fault diagnosis is practicality and feasibility.

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Application of ANN in Hydraulic Pressure Control Fault Diagnosis System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.347-350.864 ◽

2013 ◽

Vol 347-350 ◽

pp. 864-868

Author(s):

Xiao Yu Zhang ◽

Li Li Ding

Keyword(s):

Neural Network ◽

Control System ◽

Fault Diagnosis ◽

Pressure Control ◽

Fault Isolation ◽

Hydraulic Pressure ◽

Diagnosis System ◽

Pressure Control System ◽

Fault Diagnosis System ◽

Artificial Neural Network Ann

The existing hydraulic pressure control fault diagnosis system is effective on fault detection, but the fault isolation capability is bad. In order to improve the capability of the fault isolation, the artificial neural network (ANN) is used in the fault diagnosis system. Aimed at the representative diagnosis of the hydraulic pressure control system, the three layers feedback network is adopted, the basic theory of conjugate gradient BP neural network is explained in detail, and the key techniques are introduced. Five types of typical faults of hydraulic pressure control system can be distinguished easily by it, the faults diagnosis efficiency is higher 30% than ever and the fault diagnosis capability is better 80% than before.

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Circuit Fault Diagnosis Interface Software Design

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.651 ◽

2011 ◽

Vol 71-78 ◽

pp. 651-654

Author(s):

Tong Shun Fan ◽

Yu Ping Wang ◽

Li Ming Luo

Keyword(s):

Control System ◽

Fault Diagnosis ◽

Software Design ◽

Digital Circuit ◽

Research Project ◽

Diagnosis System ◽

Interface Circuit ◽

Fault Diagnosis System ◽

Circuit Fault Diagnosis ◽

And Control

On the basis of research on digital circuit fault diagnosis system for missile launch and control system – one research project recently completed by the author ,and through analysis for the first and foremost problem of interface circuit, this paper makes a detailed description of digital circuit fault diagnosis interface circuit software design based on LabWindows/CVI, and gives major steps of the development for interface circuit software.

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Design of Fault Diagnosis System for the Parameter-Depended Control System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.320.636 ◽

2011 ◽

Vol 320 ◽

pp. 636-641

Author(s):

Jing Zhou

Keyword(s):

Control System ◽

Fault Diagnosis ◽

Fault Detection ◽

Fault Isolation ◽

Linear Matrix ◽

Diagnosis System ◽

Loop Control ◽

Closed Loop Control System ◽

Loop Control System ◽

Fault Diagnosis System

A robust parameter-depended reduced order(RPRO) fault detection filter(FDF) is designed. Contrary to the parameter-depended uncertainty system, the order of the linear matrix inequalities is reduced, then the RPRO fault detection and fault isolated filters are constructed. Then a RPRO fault isolation filter is designed for occurrence of both actuator fault and sensor fault in the aerocraft’s closed-loop control system, and fault diagnosis system is structured based on the fault isolation filters. Through the output of the fault diagnosis system, we can alarm the fault timely and the advantages of this approach are highlighted.

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