SMART AIRCRAFT SKIN IMPACT AREA POSITIONING METHOD BASED ON TRUNCATED REVERSE WEIGHTED SUM

Title:

SMART AIRCRAFT SKIN IMPACT AREA POSITIONING METHOD BASED ON TRUNCATED REVERSE WEIGHTED SUM

Document Type and Number:

WIPO Patent Application WO/2020/029512

Kind Code:

A1

Abstract:

A smart aircraft skin impact area positioning method based on a truncated reverse weighted sum, belonging to the technical fields of smart aerospace structures and health monitoring. Piezoelectric sensor arrays are arranged in a smart aircraft skin structure and are connected to multiple impact area monitoring systems. After each impact area monitoring system obtains a digital sequence generated by an impact, the method comprises: first truncating the digital sequence as characteristic digital sequences, calculating reverse weighted values of the characteristic digital sequences, then a monitoring center calculating, according to piezoelectric sensors constituting impact monitoring sub-areas, a reverse weighted sum of each impact monitoring sub-area, and finally determining the impact monitoring sub-area having the maximum reverse weighted sum as an area where the impact occurs. The method is simple, has high accuracy of impact area positioning, facilitates realizing embedded programming, and can solve the problem of a positioning conflict during networked monitoring of multiple impact area monitoring systems and the problem of the difficulty in accurately positioning a middle area.

Inventors:

QIU LEI (CN)
YUAN SHENFANG (CN)
REN YUANQIANG (CN)
DENG XIAOLEI (CN)

Application Number:

PCT/CN2018/122670

Publication Date:

February 13, 2020

Filing Date:

December 21, 2018

Export Citation:

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Assignee:

UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)

International Classes:

B64F5/60

Foreign References:

CN104215528A	2014-12-17
CN201151484Y	2008-11-19
CN108146615A	2018-06-12
CN108169037A	2018-06-15
CN1868807A	2006-11-29
US20020187047A1	2002-12-12

Other References: