Analysis of the time-frequency characteristics of internal combustion engine vibration signal based on adaptive generalized S transform

作者：Xu Hongmei^*; Yuan Shengfa; Zong Li

来源：2010 3rd International Congress on Image and Signal Processing, CISP 2010, 2010-10-16 to 2010-10-18.

DOI：10.1109/CISP.2010.5647348

• Analysis results
• Cylinder head
• Energy concentration
• Fundamental frequencies
• Gasoline engines
• Generalized S transform
• Higher resolution
• IC engines
• Internal combustion
• Lower frequency components
• Optimization parameter
• Second orders
• Simulation experiments
• Structure optimization
• Time frequency analysis
• Time-frequency characteristics
• Time-frequency representations
• Vibration characteristics
• Vibration energies

An adaptive generalized S transform algorithm with an optimization parameter was first proposed in this paper. A simulation experiment was subsequently designed to verify the validity of the algorithm. Compared with other time-frequency analysis algorithms, this algorithm has a higher resolution and energy concentration, and is more suitable for analyzing the time-frequency characteristics of the cylinder head vibration signal.Afterwards,various time-frequency analysis methods were adopted to analyze the vibration characteristics of a four cylinder gasoline engine. The results show that the vibration energy of the cylinder head is chiefly concentrated in the frequency band of 1700~2300Hz, and mainly caused by the engine combustion incentive. The lower frequency components of 37Hz and 74Hz correspond to the fundamental frequency and its second-order harmonic respectively. The analysis results are helpful to the vibration control and structure optimization of IC engine.

• 出版日期2010
• 单位华中农业大学