Title:
ADAPTIVE CONTROL METHOD OF CYCLIC SIGNAL
Document Type and Number:
Japanese Patent JP3564974
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an adaptive control method of cyclic signals, in which convergence stability of adaptive control and follow-up ability to changes of the angular frequency of the cyclic signals to be suppressed are compatible.
SOLUTION: This adaptive control method of the cyclic signals is provided with an adaptive signal generation algorithm 11 for generating adaptive signals y(n) for offsetting the cyclic signals f(n) at an observation point 24, and an adaptive coefficient vector updating algorithm 12, for adaptively updating the amplitude a(n) and phase &phiv (n) of the adaptive signals y(n). Since the adaptive coefficient vector updating algorithm 12 is semi-normalized by [A (ω)+γ] which is the sum of the measured value A(ω) of the gain of a transfer characteristic 23 and a divergence prevention constant γ, an updating notch width is small and stability is high in the frequency band of a high gain A(γ), whereas the updating notch width becomes large and adaptability is improved in the frequency band for low gain A(γ). As a result, the convergence stability of the adaptive control and the follow-up ability to frequency fluctuation become compatible.
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Inventors:
Katsuhiro Goto
Application Number:
JP30614197A
Publication Date:
September 15, 2004
Filing Date:
November 07, 1997
Export Citation:
Assignee:
Tokai Rubber Industry Co., Ltd.
International Classes:
G05B13/02; G05B13/04; G10K11/178; H03H21/00; (IPC1-7): G05B13/02; H03H21/00
Domestic Patent References:
| JP9198106A | ||||
| JP9139696A | ||||
| JP7133842A |
Attorney, Agent or Firm:
Hiroshi Okawa
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