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60篇 您的检索式:作者名="Andrew BALL"
    题名 作者 年代 出处 被引量
1基于电动机电流信号双谱分析的齿轮传动故障诊断显示文摘电动机电流信号分析广泛应用于电动机本身的监测,但用该项技术监测与电动机相连设备的研究却很少。提出应用异步电动机的电流信号的调制信号双谱分析方法,实现对与电动机连接的齿轮传动系统的故障监测。试验表明调制信号双谱波峰的升高可以作为检测故障的依据。齿轮的故障可通过观测相关轴的双频波峰的变化进行诊断,与齿轮直接相连的轴产生较大的波峰增高,而与齿轮相邻的轴产生较小的波峰增高但轴不对中的故障可以只观测与该轴相应的双频波峰增高来确定。陈峙 王铁 谷丰收 MANSAF Haram ANDREW Ball 2012机械工程学报2012,48,21:35
2人群分类与车内噪声声品质主观评价研究(英文)显示文摘本文以等响处理后的车内噪声为研究对象,进行噪声声品质的主观评价研究。研究发现,人群分类处理对于揭示噪声声品质的主观感知属性起着重要的作用。对于评价者分类处理之后,两类评价者对于车内噪声的偏好性均可采用一个维度表示,并可直接采用成对比较法的直接排序法获得;一类评价者的偏好性与低沉度成正比,而另一类评价者与低沉度成反比。如果未进行人群分类处理,则不能很好地解释其主观感知属性。焦风雷 田静 刘克 毛东兴 GU Feng-shou Andrew BALL 蒋剑 2006声学技术2006,25,6:11
3Tribological behaviour diagnostic and fault detection of mechanical seals based on acoustic emission measurements显示文摘Acoustic emission(AE) has been studied for monitoring the condition of mechanical seals by many researchers, however to the best knowledge of the authors, typical fault cases and their effects on tribological behaviour of mechanical seals have not yet been successfully investigated. In this paper, AE signatures from common faults of mechanical seals are studied in association with tribological behaviour of sealing gap to develop more reliable condition monitoring approaches. A purpose-built test rig was employed for recording AE signals from the mechanical seals under healthy and faulty conditions. The collected data was then processed using time domain and frequency domain analysis methods. The study has shown that AE signal parameters: root mean squared(RMS) along with AE spectrum, allows fault conditions including dry running, spring out and defective seal faces to be diagnosed under a wide range of operating conditions. However, when mechanical seals operate around their transition point, conventional signal processing methods may not allow a clear separation of the fault conditions from the healthy baseline. Therefore an auto-regressive(AR) model has been developed on recorded AE signals to classify different fault conditions of mechanical seals and satisfactory results have been perceived.Hossein TOWSYFYAN Fengshou GU Andrew D BALL Bo LIANG 2019Friction2019,7,6:10
4A New Method for Modelling and Simulation of the Dynamic Behaviour of the Wheel-rail contact显示文摘This paper presents a new method for modelling and simulation of the dynamic behaviour of the wheel-rail contact. The proposed dynamic wheel-rail contact model comprises wheel-rail contact geometry, normal contact problem, tangential contact problem and wheelset dynamic behaviour on the track. This two-degree of freedom model takes into account the lateral displacement of the wheelset and the yaw angle. Single wheel tread rail contact is considered for all simulations and Kalker s linear theory and heuristic non-linear creep models are employed. The second order differential equations are reduced to first order and the forward velocity of the wheelset is increased until the wheelset critical velocity is reached. This approach does not require solving mathematical equations in order to estimate the critical velocity of the dynamic wheel-rail contact model. The mathematical model is implemented in Matlab using numerical differentiation method. The simulated results compare well with the estimated results based on classical theory related to the dynamic behaviour of rail-wheel contact so the model is validated.Arthur Anyakwo Crinela Pislaru Andrew Ball 2012International Journal of Automation and computing2012,9,3:7
5Intra-abdominal hypertension and the abdominal compartment syndrome: updated consensus definitions and clinical practice guidelines from the World Society of the Abdominal Compartment Syndrome显示文摘Andrew W. Kirkpatrick Derek J. Roberts Jan Waele Roman Jaeschke Manu L. N. G. Malbrain Bart Keulenaer Juan Duchesne Martin Bjorck Ari Leppaniemi Janeth C. Ejike Michael Sugrue Michael Cheatham Rao Ivatury Chad G. Ball Annika Reintam Blaser Adrian Regli Zs 2013Intensive Care Medicine2013,,7:2
6The recovery of lignocellulose-degrading enzymes from spent mushroom compost显示文摘Andrew S Ball Anita M Jackson 1995Bioresource Technology1995,54,:1
7Trends in pesticide use and drivers for safer pest management in four African countries显示文摘Stephanie Williamson Andrew Ball Jules Pretty 2008Crop Protection2008,27,:1
8Algal growth control by a barley straw extract显示文摘Andrew S Ball Matthew Williams David Vincent James Robinson 2001Bioresource Technology2001,,2:1
9Low- Temperature Processed Mesosuperstructured to Thin- Film Perovskite Solar Cells 显示文摘Ball James M Lee Michael M Hey Andrew 2013Energy Environ Sci2013,,6:1
10Trends in pesticide use and drivers for safer pest management in four African countries显示文摘Stephanie Williamson Andrew Ball Jules Pretty 2008Crop Protection2008,,:1
11Upper ocean export of particulate organic carbon in the Arabian Sea derived from thorium-234显示文摘BUESSELER K O BALL L ANDREWS J 1998Deep-Sea Research (Ⅱ)1998,45,:1
12Achieving high bit rate logical stochastic resonance in a bistable system by adjusting parameters显示文摘The phenomenon of logical stochastic resonance(LSR) in a nonlinear bistable system is demonstrated by numerical simulations and experiments. However, the bit rates of the logical signals are relatively low and not suitable for practical applications. First, we examine the responses of the bistable system with fixed parameters to different bit rate logic input signals, showing that an arbitrary high bit rate LSR in a bistable system cannot be achieved. Then, a normalized transform of the LSR bistable system is introduced through a kind of variable substitution. Based on the transform, it is found that LSR for arbitrary high bit rate logic signals in a bistable system can be achieved by adjusting the parameters of the system,setting bias value and amplifying the amplitudes of logic input signals and noise properly. Finally, the desired OR and AND logic outputs to high bit rate logic inputs in a bistable system are obtained by numerical simulations. The study might provide higher feasibility of LSR in practical engineering applications.杨定新 谷丰收 冯国金 杨拥民 Andrew Ball 2015Chinese Physics B2015,24,11:1
13An Approach to Fault Diagnosis of Reciprocating Compressor Valves using Teager-Kaiser Energy Operator and Deep Belief Networks显示文摘Van Tung Tran Faisal AlThobiani Andrew Ball 2013Expert Systems With Applications2013,,:1
14Production and characterization of synthetic wood chars for use as surrogates for natural sorbents显示文摘Roberta A. Brown Andrew K. Kercher Thanh H. Nguyen Dennis C. Nagle William P. Ball 2005Organic Geochemistry2005,,3:1
15Upper ocean export of particulate organic carbon and biogenic silica in the Southern Ocean along 170°W显示文摘Buesseler K O Ball L Andrews J 2001Deep-Sea Research Ⅱ2001,48,:1
16The recovery of lignocellu lose-degrading enzymes from spent mushroom compost 显示文摘Andrew Ball S Anita Jackson M 1995Bioresource Technology1995,54,:1
17Multiple band structure and band termina-tion in 157 Ho towards complete high-spin spec-troscopy显示文摘RADFORD D C ANDREWS H R BALL G C 1992Nuclear Physics A1992,545,3:1
18The recovery of lignocellulose-degrading enzymes from spent mushroom compost显示文摘Andrew S Ball Anita M Jackson 1995Bioresource Technology1995,54,:1
19Degradation of alkaki-lignin residues from solid-state farmentation of wheat straw by Streptomyces显示文摘MANUEL HERNaDEZ MARiA J HERNaNDEZ-CORONADO ANDREW S BALL 2001Biodegradation2001,12,:1
20Bispectrum of stator phase current for fault detection of induction motor显示文摘Juggrapong Treetrong Jyoti K. Sinha Fengshu Gu Andrew Ball 2009ISA Transactions2009,,3:1
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