An Analysis of Vehicle Engine Vibration Signals with Digital Order Tracking Approaches
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- Shao W., Wang X., Liu D., Shao Z. (2013) An Analysis of Vehicle Engine Vibration Signals with Digital Order Tracking Approaches. In: SAE-China, FISITA (eds) Proceedings of the FISITA 2012 World Automotive Congress. Lecture Notes in Electrical Engineering, vol 201. Springer, Berlin, Heidelberg
This chapter presents an application of Digital Order Tracking to vibration signal analysis of automobile engines. By using a tacho probe to detect the variation of engine speeds and an accelerometer to collect the vibration signals of the engine,the FFT-based analysis are performed in order spectra. Data processing is implemented by digital manipulation—adding zeros, interpolations, oversampling and resampling. Zoom factor D and decimation d are thoughtfully selected. A comparisons between tracking and non-tracking spectra is made and the order spectra are plotted in different forms. Referring to the analyzed results, a successful engine diagnoses have been presented.