Moment Method Based Fuzzy Reliability Analysis for Wing of Unmanned Aircraft
Reliability analysis for wing of unmanned aircraft is a very important step in the process of unmanned aircraft design, but now most reliability analysis for wings are aimed at random reliability and ignored the fuzzy failure state. For fuzzy reliability analysis with fuzzy failure state and fuzzy safety state, moment method was proposed to calculate fuzzy reliability. In the integral operation of the fuzzy reliability, the integral region was scattered according to the value of performance function. In the scattered integral region, the membership function value of the performance function to the fuzzy failure region keeps constant approximately, on which the calculation of the fuzzy reliability was transformed into that of the random reliability. After this transformation from the fuzzy reliability to the random reliability was completed, the moment method was employed to obtain the fuzzy reliability directly. The concept and the implementation of the proposed method are described in this paper, and the result of the wing of an unmanned aircraR shows that the proposed method possesses high precision and wide applicability in engineering.
wing of unmanned aircraft moment method fuzziness reliability
SONG Jun JIANG Nianzhao DAI Yong XIE Qinwei ZHANG Zhiqing LI Xiangping
Nanjing Research Institute of Simulation Technology,Nanjing 210016,Jiangsu,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1826-1829
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）