Sensors 2010, 10(1), 952-962; doi:10.3390/s100100952
Article

Improving the Response of Accelerometers for Automotive Applications by Using LMS Adaptive Filters: Part II

Received: 22 December 2009; in revised form: 15 January 2010 / Accepted: 25 January 2010 / Published: 26 January 2010
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In this paper, the fast least-mean-squares (LMS) algorithm was used to both eliminate noise corrupting the important information coming from a piezoresisitive accelerometer for automotive applications, and improve the convergence rate of the filtering process based on the conventional LMS algorithm. The response of the accelerometer under test was corrupted by process and measurement noise, and the signal processing stage was carried out by using both conventional filtering, which was already shown in a previous paper, and optimal adaptive filtering. The adaptive filtering process relied on the LMS adaptive filtering family, which has shown to have very good convergence and robustness properties, and here a comparative analysis between the results of the application of the conventional LMS algorithm and the fast LMS algorithm to solve a real-life filtering problem was carried out. In short, in this paper the piezoresistive accelerometer was tested for a multi-frequency acceleration excitation. Due to the kind of test conducted in this paper, the use of conventional filtering was discarded and the choice of one adaptive filter over the other was based on the signal-to-noise ratio improvement and the convergence rate.
Keywords: piezoresistive accelerometer; conventional LMS adaptive filter; fast LMS adaptive filter
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MDPI and ACS Style

Hernandez, W.; De Vicente, J.; Sergiyenko, O.Y.; Fernández, E. Improving the Response of Accelerometers for Automotive Applications by Using LMS Adaptive Filters: Part II. Sensors 2010, 10, 952-962.

AMA Style

Hernandez W, De Vicente J, Sergiyenko OY, Fernández E. Improving the Response of Accelerometers for Automotive Applications by Using LMS Adaptive Filters: Part II. Sensors. 2010; 10(1):952-962.

Chicago/Turabian Style

Hernandez, Wilmar; De Vicente, Jesús; Sergiyenko, Oleg Y.; Fernández, Eduardo. 2010. "Improving the Response of Accelerometers for Automotive Applications by Using LMS Adaptive Filters: Part II." Sensors 10, no. 1: 952-962.

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