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Fault Tree Automatic Generation System Research and Development

Author: ZhouZuo
Tutor: SongTong
School: Dalian University of Technology
Course: Detection Technology and Automation
Keywords: Automatic generation of fault tree Causal model Adjacency matrix Reachability matrix Structural model
CLC: TP311.11
Type: Master's thesis
Year: 2005
Downloads: 383
Quote: 13
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Abstract


Currently, the computer automatically generate fault tree technology development has been widespread concern. In order to enhance the readability of the fault tree , large-scale systems to simplify the complexity of fault tree generation and fault tree generation technology to achieve resource sharing , this paper has developed a fault tree automatic generation system . The system is based on systematic analysis based on automatically generated fault tree method . The main idea of this approach is that according to various constituent elements of the control loop and ( part ) control circuit constructed to describe the characteristics of causal models and components ( parts ) causal model database. Based control system flowchart to determine the independent control system components ( parts ) , the control loop and the system uncontrollable external disturbances , and other basic information, and the individual components ( parts ) , the control loop and the system is not controllable external disturbances as a sub- element of the control system . In the fault tree generation , according to the flow chart of the control system and determine the system digraph adjacency matrix , adjacency matrix describes the use of each sub- system direct relationship between the elements and the obtained system reachability matrix . Reachability matrix of the system using system analysis method for sub-element level analysis , the strong connection relationship identification , the basic elements of the identified sub- series of operations, to determine the system fault tree structure model , get the system fault tree at the top of the structure . Finally, the structure of each node by searching at the top of the fault tree structure combined with models from a database call the relevant causal model, automatic generation system fault tree . The system includes a user login module , fault tree model module, a control system module that generates fault tree modules and technical forum module . Their functions are user registration, login and information management ; create and edit elements ( components ) and the control loop causal model causal model ; create and edit control system ; automatically generates a control system fault tree ; provides users with a probe fault tree automatic generation technology places , so that resources can be shared . In this paper, an example of hot nitric acid cooling system verifies the effectiveness and feasibility of this approach . The system developed in this paper as a fault tree generation save a lot of duplication of effort , so that the resulting fault tree has a stronger theoretical basis , to facilitate the fault tree analysis and application , and has good application prospects.

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