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Title:
ACTIVE NOISE CONTROL SYSTEM IN HIGH SPEED TRAIN
Document Type and Number:
WIPO Patent Application WO/2019/201028
Kind Code:
A1
Abstract:
The present invention relates to an active noise control system in a high speed train, comprising: seats; noise acquisition means disposed at different noise excitation source positions, which are capable of inducing noise in noise-reduction target areas, in carriages and used for acquiring noise source signals at different positions; active sound production means, mounted on the seats and connected to active controllers for sending noise source resisting signals; and the active controllers, comprising reference noise extracting units and control mode generating units. The reference noise extracting unit is used for receiving the noise source signals acquired by multiple reference sensors and extracting noise source signals x(n) used for predicting a control mode. The control mode generating unit is used for analyzing characteristics of noise sources by means of an active control algorithm and automatically generating a control mode so as to control the active sound production means to generate noise source resisting signals y(n) in real time, the amplitudes of the noise source resisting signals y(n) being equal to those of the noise source signals x(n), and the phases of the noise source resisting signals y(n) being opposite to those of the noise source signals x(n). According to the present invention, interior noise can be effectively reduced, riding comfort is improved, the additional mass to an original structure is small, and lightweight requirements for trains are satisfied.

Inventors:
ZHAO, Yanju (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
SHUAI, Renzhong (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
SONG, Shike (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
PAN, Guangliang (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
LIN, Peng (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
Application Number:
CN2019/077302
Publication Date:
October 24, 2019
Filing Date:
March 07, 2019
Export Citation:
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Assignee:
CRRC QINGDAO SIFANG CO., LTD. (No. 88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 1, 266111, CN)
International Classes:
G10K11/178; B60R16/037
Foreign References:
CN108597489A2018-09-28
CN208111072U2018-11-16
CN105513585A2016-04-20
CN107351740A2017-11-17
CN107133401A2017-09-05
CN103912625A2014-07-09
JP2010054962A2010-03-11
US20020097884A12002-07-25
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (Floor 16, Tower A Indo Building,A48 Zhichun Road, Haidian District, Beijing 8, 100098, CN)
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