《机床与液压》 Hydromechatronics Engineering

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稿件标题: Clearance Fault Diagnosis for Internal Combustion Engines Using the AS-SOAI Algorithm
稿件作者: CHEN LIN , SHAO Yimin , Chris K. Mechefske , ZHU Xincai
关键字词: clearance fault, engine,diagnosis,angle domain
文章摘要: Crankshaft and connecting rod mechanism is an important component which transforms the reciprocating motion to rotating motion in a internal combustion engine (ICE). It is a difficult and challenging task to identify abnormal clearance between the connecting rod bearing (CRB) and the crankshaft rod journal (CRJ) because of variable working conditions and complicated nonlinear excitation. In order to solve this problem, the use of second order accumulation indicators from per-processed angle domain signals (AS-SOAI) is proposed. First, an angle domain sampling technique is employed in order to eliminate the non-stationary property of the signals. Then the discrete wavelet transform is used to remove any significant noise from the raw signal. Finally the internal combustion engine condition can be easily diagnosed through the proposed indicators (RMS of second order cumulant, RMSSOC, and kurtosis of second order cumulant, KSOC). The AS-SOAI is applied to the data sets, which are collecte
收录刊物: 2012.6
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