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Patent Searching and Data


Title:
VEHICLE VIBRATION REDUCTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/137418
Kind Code:
A1
Abstract:
A rotation signal from the source of a controlled object is detected, and, when the number of rotations (frequency) is changed, a convergent value of filter coefficients of adaptive filters (33, 34), which is stored in a control apparatus (11) and based on a past control result corresponding to the frequency, is read and set in the adaptive filters (33, 34) as an initial value. The adaptive filters (33, 34) are updated by using the initial value of the filter coefficients, and output a control signal (y(t)) to an actuator (ACM)(3a). LMS computing units (37, 39) read a reference signal calculated from the rotation signal and an acceleration signal (error signal)(e(t)) detected by a sensor (9), and perform a process of updating the filter coefficients of the adaptive filters (33, 34). The adaptive filters (33, 34) output the control signal (y(t)) to the ACM (3a) on the basis of the updated filter coefficients.

Inventors:
WATAI HIROKAZU (JP)
MURAKAMI KAZUTOMO (JP)
Application Number:
PCT/JP2012/001736
Publication Date:
October 11, 2012
Filing Date:
March 13, 2012
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
WATAI HIROKAZU (JP)
MURAKAMI KAZUTOMO (JP)
International Classes:
F16F15/02; B60K5/12; G05B13/02; G05D19/02
Foreign References:
JP2002155985A2002-05-31
JP2006161921A2006-06-22
JPH08272376A1996-10-18
JPH04283125A1992-10-08
JP2002155985A2002-05-31
JPH0844377A1996-02-16
Other References:
See also references of EP 2696099A4
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
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Claims: