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

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	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)
刊名	MECHANICAL SYSTEMS AND SIGNAL PROCESSING
	2015-10
通讯作者邮箱	luo@imech.ac.cn ; wangyp@imech.ac.cn ; wangchun@imech.ac.cn ; zijiang@imech.ac.cn
卷号	62-63 页码:2841-2848
关键词	Aerodynamic force measurements Strain gauge balance Inertia compensation Signal decomposition Accelerometer-free Shock tunnels
ISSN号	0888-3270
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.
产权排序	[Luo, Changtong; Wang, Yunpeng; Wang, Chun; Jiang, Zonglin] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
中文摘要	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.
分类号	一类
类目[WOS]	Engineering, Mechanical
研究领域[WOS]	Engineering
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1016/j.ymssp.2015.02.024
语种	英语
WOS记录号	WOS:000355354300019
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58340]
专题	力学研究所_高温气体动力学国家重点实验室
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.(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.