Title :
Detection of Knocking by Wavelet Transform Using Ion Current
Author :
Zhang, Zhong ; Saiki, Noriho ; Toda, Hiroshi ; Imamura, Takashi ; Miyake, Tetsuo
Author_Institution :
Instrum. Syst. Lab., Toyohashi Univ. of Technol., Toyohashi, Japan
Abstract :
In this study, we first analyze the characteristics of knocking and the standing-wave by the wavelet transform using the ion current waveform, which is measured in a spark-ignition engine. Based on this result, we design wavelets to detect knocking from the ion current waveform. We next define an evaluation parameter E, and apply it to knocking detection and show its effectiveness.
Keywords :
engines; mechanical engineering; spark machining; wavelet transforms; ion current; knocking detection; spark-ignition engine; wavelet transform; Control systems; Engines; Instruments; Laboratories; Signal analysis; Signal detection; Time frequency analysis; Wavelet analysis; Wavelet domain; Wavelet transforms;
Conference_Titel :
Innovative Computing, Information and Control (ICICIC), 2009 Fourth International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4244-5543-0
DOI :
10.1109/ICICIC.2009.173
