Title:
ACTIVE-TYPE VIBRATION NOISE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018204662
Kind Code:
A
Abstract:
To provide an active-type vibration noise control device using an adapted notch filter which can perform stable control while suppressing an increase of a calculation load.SOLUTION: An active-type vibration noise control device comprises: a reference signal creation part; an output part for outputting control vibration on the basis of a control signal; a sensor part for acquiring an error signal; a filter coefficient calculation part for updating a filter coefficient of an adapted notch filter on the basis of the reference signal, an estimation transmission characteristic of the control signal, and the error signal; an amplitude calculation part for calculating an amplitude on the basis of the filter coefficient; a phase calculation part for calculating a phase on the basis of the filter coefficient; and a control signal creation part for calculating a correction amplitude by multiplying a first stabilization coefficient which is larger than zero, and smaller than 1 to the amplitude, calculating a correction phase by multiplying a second stabilization coefficient larger than 1 to the phase, setting the correction amplitude as the amplitude in a waveform of a sine wave signal, and creating the control signal by shifting the phase by an amount of the correction phase.SELECTED DRAWING: Figure 1
Inventors:
SAKURAI KATSUHIRO
Application Number:
JP2017109248A
Publication Date:
December 27, 2018
Filing Date:
June 01, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16F15/02; G10K11/178; H03H17/02; H03H21/00
Attorney, Agent or Firm:
Patent business corporation Ogasawara patent office