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3篇 您的检索式:作者名="Philip Cross"
    题名 作者 年代 出处 被引量
1Model-based and Fuzzy Logic Approaches to Condition Monitoring of Operational Wind Turbines显示文摘It is common for wind turbines to be installed in remote locations on land or offshore, leading to difficulties in routine inspection and maintenance. Further, wind turbines in these locations are often subject to harsh operating conditions. These challenges mean there is a requirement for a high degree of maintenance. The data generated by monitoring systems can be used to obtain models of wind turbines operating under different conditions, and hence predict output signals based on known inputs. A model-based condition monitoring system can be implemented by comparing output data obtained from operational turbines with those predicted by the models, so as to detect changes that could be due to the presence of faults. This paper discusses several techniques for model-based condition monitoring systems: linear models, artificial neural networks, and state dependent parameter 'pseudo' transfer functions.The models are identified using supervisory control and data acquisition(SCADA) data acquired from an operational wind firm. It is found that the multiple-input single-output state dependent parameter method outperforms both multivariate linear and artificial neural network-based approaches. Subsequently, state dependent parameter models are used to develop adaptive thresholds for critical output signals. In order to provide an early warning of a developing fault, it is necessary to interpret the amount by which the threshold is exceeded, together with the period of time over which this occurs. In this regard, a fuzzy logic-based inference system is proposed and demonstrated to be practically feasible.Philip Cross Xiandong Ma 2015International Journal of Automation and computing2015,12,1:3
2Flow simulation of the hismelt process显示文摘Mark P Mark Cross Philip Schwarz 2003Third International Conference on CFD in the Minerals and Process Industries CSTRO Melbourne Australia2003,,:1
3An analysis of paternal age and 47,+21 in 35,000 new prenatal cytogenetic diagnosis data from the New York State Chromosome Registry: no significant effect显示文摘Philip K. Cross Ernest B. Hook 1987Human Genetics1987,,4:1
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