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Of FMECA and FRACAS In UAV power system

Author: TangCheng
Tutor: HuangHongZhong
School: University of Electronic Science and Technology
Course: Mechanical Design and Theory
Keywords: UAV Power system Failure mode effects and criticality analysis ( FMECA ) Fault reporting analysis and corrective action system (FRACAS) Fuzzy Sets
CLC: V279
Type: Master's thesis
Year: 2010
Downloads: 153
Quote: 1
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Abstract


UAV development process, the reliability of the work carried out, there are many problems. The reliability of the lack of a unified coordination, management, resulting in reliability data analysis departments is difficult unanimously approved by all departments, and difficult to work with to form a synergy between the various departments; departments lack the depth of the reliability of the method and the reliability of workflow research, resulting in the need for timely follow-up reliability work difficult to carry out; unified reliability of the information technology management platform between the various departments, some departments even filled out by hand, cause reliability inefficient, while the various departments the exchange of information between the poor. Problems difficult to truly improve the reliability level of work, it is difficult to improve the reliability of the UAV. FRACAS (Failure Reporting, Analysis and Corrective Action Systems) \Feedback, closed-loop control \reliability and maintainability of the expected requirements, to prevent the failure can be reproduced. FMECA (Failure Mode, Effects and Criticality Analysis) is a \evaluate and improve the system reliability of the design to provide basic information. UAV power system reliability actual work, this paper carried out the following aspects of the work. (1) put forward a proposal to carry out the work UAV power system reliability, and design departments, the quality reliability Center, finished plants and other departments to help coordinate departments to clear their reliability responsibilities and tasks. (2) to carry out, in accordance with the \work to carry out the foundation. (3) development of FRACAS in FMECA analyzed on the basis of the information system, which is based on the \Specification reliability workflow through the system, to further clarify the responsibilities and tasks of the various departments. (4) in the criticality analysis (CA, Criticality Analysis) for risk priority number (RPN, Risk Priority Number) shortcomings of subjectivity in the scoring process to study the failure mode criticality analysis method based on fuzzy mathematical theory fuzzy RPN method (FRPN, Fuzzy Risk Priority Number), CA analysis provides a better method of analysis. Carry out the work of this series, the specification of the reliability of workflow, a clear the reliability work responsibilities of the various departments, and improve the reliability of the work efficiency. Is of positive significance to improve the reliability level of a UAV, and also provide a reference for subsequent models developed.

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CLC: > Aviation, aerospace > Aviation > Various types of aircraft > Unmanned aircraft
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