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Fuzzy Logic and Control: Software and Hardware Applications, Volume 2 by Timothy J. Ross - University of New Mexico, Nader Vadiee, Mohammad Jamshidi

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11 Using Fuzzy Logic To Automatically Configure A Digital Filter

Robert J. KnightMohammad T. AkbarzadehUniversity of New Mexico

A fuzzy logic based self-tuning filter is simulated and implemented using the DSP 56001 digital signal processor IC and an IBM PC. The fuzzy logic tuner uses a hierarchy of fuzzy rules to decide on the upper and lower edges of the filter. These edges are then used to design a Butterworth band pass filter. The coefficients of the transfer function of the Butterworth filter are passed on to the DSP 56001 chip for implementation of the filter.

11.1 Introduction

A common problem in signal processing is the extraction of a desired signal from extraneous noise or interference. This problem is relatively easy to handle when ...

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