Engine Knock Feature Extraction Based on Third-order Cumulants and Filter

摘要：

In order to detect knock in spark ignition engines, vibration signals are measured by knock sensor mounted on the head of engine block. The skewness of the vibration signal is analyzed, which is related to the probability distribution. Based on the analysis result, a method combine fdter with third-order cumulants is proposed to extract knock feature. Experiments on modeled signals show that background noise is reduced and signal-to-noise ratio is improved. Estimated energy and period of knocking are appropriate. Knock features are also observed clearly from the results of real vibration signals processing.

关键词： Knock Detection Feature Extraction Thirdorder Cumulants

作者: Wenhong Yang Ke Wang Chengcai Liu

作者单位: College of Communication Engineering Jilin University, Changchun 130025, China College of Automobile Engineering Jilin University, Changchun 130025, China

会议类型: 国际会议

会议名称: 2010 International Conference on Measuring Technology and Mechatronics Automation(ICMTMA 2010)(2010年检测技术与机电自动化国际会议)

会议地点: 长沙

会议语种:英文

页码: 1233-1236

在线出版日期: 2010-03-13（万方平台首次上网日期，不代表论文的发表时间）