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Identification of Cylinder Pressure Based on Wavelet Analysis and ARMA Model
Author(s): 
Pages: 484-487
Year: Issue:  4
Journal: JOURNAL OF VIBRATION ENGINEERING

Keyword:  内燃机故障诊断小波分析ARMA模型;
Abstract: 提出了内燃机缸内气体压力的一种新的间接识别方法.利用缸盖振动响应信号建立缸盖系统的ARMA模型,并用小波包变换方法对缸盖振动响应信号进行去噪和分形,将重构后的缸盖振动响应信号作为缸内气体压力识别的原始数据,大大提高了识别精度.计算的结果与实测的结果吻合较好,本文的研究对内燃机的状态监测和故障诊断具有实用价值.
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