研究期間：10108~10207;This research project is a two-year project. In the first year, single flank testing will be utilized to a spur gear pair composed of a driving master pinion and a driven testing gear. The Hilbert-Huang transform (HHT) will be applied to analyze the data of the spur gear pair, and the Empirical Mode Decomposition Method (EMD) will be applied to determine the Intrinsic Mode Functions (IMF) corresponding to different frequencies. A quantitative analysis from the experimental data will be achieved based on HHT and EMD. The results of the tooth errors determined from HHT will be compared with those obtained from low/high pass filtering, Fast Fourier transform (FFT) and gear inspection instrument. The developed HHT program will be integrated on the single flank tester in NCU. In the second year, the developed HHT program will be applied to analyze experimental data of meshing spur gear pairs. A methodology for quick inspection of the quality of a spur gear pairs from the single flank tests will be built. And HHT will be applied to analyze the experimental data to study the effects of design parameters, rotating speed, and torsional loading on the transmission characteristics of spur gear pairs. The relationship between the transmission errors and the vibration/noise of a spur gear pair will be explored. In addition, we will design and establish a rolling dynamic test for spur gear pairs. Signals received from accelerometers will be analyzed by HHT and FFT. The results from the rotating tests and single flank tests will be compared and will be helpful to distinguish the dominant factors related to gear noise and vibration. The techniques developed in this research project, such as applying HHT program in analyzing both data from single flank tests and rotating tests, can be further applied to other types of gear transmissions. The technique developed in this research project and will be very beneficial for the precision transmission industry in our country.
