Searched for: subject:"Sea%5C+measurements"
(1 - 4 of 4)
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Snellen, M. (author), Gaida, T.C. (author), Koop, L. (author), Alevizos, Evangelos (author), Simons, D.G. (author)
Obtaining an overview of the spatial and temporal distribution of seabed sediments is of high interest for multiple research disciplines. Multibeam echosounders allow for the mapping of seabed sediments with high area coverage. In this paper, the repeatability of acoustic classification derived from multibeam echosounder backscatter is addressed...
journal article 2018
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Zhang, Bingbing (author), Hu, Y. (author), Wang, Hongying (author), Zhuang, Zhaowen (author)
Underwater source localization problems are complicated and challenging: a) the sound propagation speed is often unknown and the unpredictable ocean current might lead to the uncertainties of sensor parameters (i.e. position and velocity); b) the underwater acoustic signal travels much slower than the radio one in terrestrial environments,...
journal article 2018
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van der Weijde, J.O. (author), van Ostayen, R.A.J. (author), Vallery, H. (author)
Coil springs are a common element in compliant actuators. For closed-loop control, the force of the coil spring has to be measured. Typically, deflection sensors indirectly measure this force. Implicitly, this assumes that the coil spring is a pure stiffness, without any mass. In reality, internal oscillations can occur due to impacts or other...
journal article 2017
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Liu, Zhigang (author), Wang, H. (author), Dollevoet, R.P.B.J. (author), Yang, S. (author), Nunez, Alfredo (author), Zhang, J. (author)
This paper explores the use of pantograph-catenary contact force (PCCF) for monitoring of the current collection quality and detection of anomalies in the interaction between pantograph and catenary. The concept of catenary structure wavelength (CSW) is proposed as the dominant component of PCCF. It describes the signal components caused by the...
journal article 2016
Searched for: subject:"Sea%5C+measurements"
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