Wave system fitting: A new method for force measurements in shock tunnels with long test duration

doi:10.1016/j.ymssp.2015.02.024

	Wave system fitting: A new method for force measurements in shock tunnels with long test duration
	Luo CT(罗长童); Wang YP(汪云鹏); Wang C(王春); Jiang ZL(姜宗林); Luo, CT (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
发表期刊	MECHANICAL SYSTEMS AND SIGNAL PROCESSING
	2015-10
卷号	62-63 页码:2841-2848
ISSN	0888-3270
摘要	Force measurements in shock tunnels are difficult due to the existence of vibrations excited by a sudden aerodynamic loading. Accelerometer inertia compensation could reduce its negative effect to some extent, but has inherent problems. A new signal decomposition method, wave system fitting (WSF), is proposed to remove vibration waves of low frequency. The WSF is accelerometer-free. It decomposes the balance signal and can separate vibration waves without the influence on the DC component, and it does work no matter the cycle of the sample signal is complete or not. As a standard signal post-processing tool in JF-12, the application results show that it works reliably with high accuracy, and it can also explain puzzling signals encountered in JF-12. WSF method is especially useful and irreplaceable whenever only a few cycles of a periodic signal could be obtained, as is usual for shock tunnels. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Aerodynamic Force Measurements Strain Gauge Balance Inertia Compensation Signal Decomposition Accelerometer-free Shock Tunnels
DOI	10.1016/j.ymssp.2015.02.024
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000355354300019
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
项目资助者	This research has been supported by Innovation Grant of Chinese Academy of Sciences and the National Natural Science Foundation of China (Grant No. 90916028).
课题组名称	LHD激波与爆轰物理
论文分区	一类
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58340
专题	高温气体动力学国家重点实验室
通讯作者	Luo, CT (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Luo CT,Wang YP,Wang C,et al. Wave system fitting: A new method for force measurements in shock tunnels with long test duration[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2015,62-63:2841-2848.
APA	Luo CT,Wang YP,Wang C,Jiang ZL,&Luo, CT .(2015).Wave system fitting: A new method for force measurements in shock tunnels with long test duration.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,62-63,2841-2848.
MLA	Luo CT,et al."Wave system fitting: A new method for force measurements in shock tunnels with long test duration".MECHANICAL SYSTEMS AND SIGNAL PROCESSING 62-63(2015):2841-2848.

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