High robustness of an SR motor angle estimation algorithm usingfuzzy predictive filters and heuristic knowledge-based rules
Cheok, A.D.; Ertugrul, N.
Industrial Electronics, IEEE Transactions on
Volume 46, Issue 5, Oct 1999 Page(s):904 - 916
Digital Object Identifier 10.1109/41.793338
Summary:In this paper, the operation of a fuzzy predictive filter used to
provide high robustness against feedback signal noise in a fuzzy logic
(FL)-based angle estimation algorithm for the switched reluctance motor
is described. The fuzzy predictive filtering method combines both
FL-based time-series prediction, as well as a heuristic knowledge-based
algorithm to detect and discard feedback signal error. As it is
predictive in nature, the scheme does not introduce any delay or phase
shift in the feedback signals, In addition, the fuzzy predictive filter
does not require any mathematical modeling of the noise and, therefore,
can be used effectively to control nonGaussian impulsive-type noise. An
analysis of the noise and error commonly found in practical motor drives
is given, and how this can effect position estimation. It is shown using
experimental results that the FL-based scheme can cope well with
erroneous and noisy feedback signals
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