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To get a thorough understanding of the properties and regulations of space tracking ship's swaying data errors so as to effectively eliminate their influences on measurement data, a nonlinear auto-regressive moving average model with exogenous inputs (NARMAX) has been developed by applying modern theories and the latest technologies. The process model of NARMAX was determined by orthogonal regressive...
To have a better understanding of the characteristics of measurement errors of shipboard space tracking equipments so as to improve some traditional data processing methods, cubic spline function is applied as a separating tool to extract the errors from complicated measurement data. By taking traditional time sequence model technology and wavelet frequency division theory into account, based on the...
Vibration signals usually contain running condition and fault information of rolling mechanical equipment. In the paper, firstly, a vibration test scheme of high speed precision electric machine is designed; time domain average method is used to filter the periodic noise and random noise of the sampling vibration signals. The result shows that the signal to noise ratio is increased. Then the de-nosing...
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