Title:
能動騒音低減装置及びシステム
Document Type and Number:
Japanese Patent JP5227263
Kind Code:
B2
Abstract:
An active noise control apparatus and an active noise control system for reducing noise using an active vibrator, such that edges β of the vibrator (i.e. genesis locations of a bending moment of force caused by the vibrator) agree with positions α on a distribution of the bending moment of force caused by noise vibration of a panel, and such that the edges β of the vibrator are aligned with the positions α on the panel where a sign, of the distribution of the bending moment of force over the panel caused by the noise vibration, reverses. As a result, a control vibration approximate to the noise vibration can be excited. Accordingly, when the vibrator is fixed by agreeing the edges β of the vibrator with the positions α determined by noise frequency desired to be reduced, noise due to a target noise frequency can be effectively reduced.
Inventors:
Isao Kakuhari
Application Number:
JP2009132139A
Publication Date:
July 03, 2013
Filing Date:
June 01, 2009
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G05D19/02; D06F33/02; D06F39/12; G10K11/178
Domestic Patent References:
| JP2150198A | ||||
| JP8036392A | ||||
| JP7210256A | ||||
| JP2006177027A | ||||
| JP2000148155A |
Attorney, Agent or Firm:
Patent business corporation Ogasawara patent office
Kaoru Kuwahara
Takeji Takada
Kaoru Kuwahara
Takeji Takada