Windowed Selected Moving Autocorrelation (WSMA), Tri-Correlation (TriC), and Misfire Detection

Liu, Louis Yizhang; Yang, Hanlong; Plee, S. L.; Naber, Jeffrey

doi:10.4271/2005-01-0647

Cited by 1 publication

(3 citation statements)

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“…Therefore, the autocorrelation can be further simplified as below: [11] In the middle left plot, white noise with uniform distribution on the interval of -0.5 and + 0.5 is added to the 5 Hz sine wave signal mentioned above. The middle right plot is its WSMA.…”

Section: Indirect Sensing For Misfire Detection With Msma Tric and mentioning

confidence: 99%

“…To enhance the signal to noise ratio, the definition of real valued autocorrelation has been extended to TriC where three elements are multiplied together: [11] In a similar fashion as the WSMA, the TriC can be simplified for real-time specific frequency monitor and feedback control. …”

Section: Indirect Sensing For Misfire Detection With Msma Tric and mentioning

confidence: 99%

“…By using the same settings of the WSMA, the simplified TriC of these two tests with these two different misfire patterns can be calculated by equation (11) as shown in Fig. 7 and 8, respectively.…”

Section: Vehicle Test and Data Analysismentioning

confidence: 99%

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Indirect Sensing for Misfire Detection with MSMA, TriC and MulC

Liu

Yang

Plee

2006 IEEE International Conference on Networking, Sensing and Control

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In this paper the Windowed Selected Moving Autocorrelation (WSMA) and the Tri-Correlation (TriC) are reviewed first. The Multi-correlation (MulC) is discussed. Then these algorithms are used for indirect sensing of engine misfire. Very often, computation resource limitation exists for real-time applications such as engine controller. The WSMA and TriC offer more opportunities for indirect sensing for engine misfires and other real-time monitor and feedback control applications in the frequency domain due to their high efficiencies. Simulation and vehicle test results for engine misfire sensing are presented in this paper.

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Section: Indirect Sensing For Misfire Detection With Msma Tric and mentioning

confidence: 99%

Section: Indirect Sensing For Misfire Detection With Msma Tric and mentioning

confidence: 99%