Title:
REAL VEHICLE ACTIVE NOISE REDUCTION METHOD AND SYSTEM BASED ON ACCELERATION CONDITIONS
Document Type and Number:
WIPO Patent Application WO/2023/151229
Kind Code:
A1
Abstract:
A real vehicle active noise reduction method and system based on an acceleration conditions. On the basis of an in-vehicle arrangement, a sweep frequency signal played by an ANC controller is played by a secondary loudspeaker and then is collected by an error microphone and transmitted to the ANC controller again; on the basis of the sweep frequency signal and a signal collected by the error microphone, a 128-tap FIR filter is used to identify the output sweep frequency signal and the signal collected by the error microphone to obtain a secondary channel transfer function; on the basis of the sweep frequency signal and the signal collected by the error microphone, a 1024-tap FIR filter is used to identify the output sweep frequency signal and the signal collected by the error microphone to obtain a secondary channel transfer function for calculating a convergence coefficient stability curve; and the secondary channel transfer function and the convergence coefficient stability curve are integrated into an FxLMS algorithm program, and a noise reduction program is executed to reduce noise in the vehicle.
More Like This:
| JPH06332476 | DEVICE FOR CONTROLLING CROSS TALK SOUND |
| JPH1074089 | MUFFLER |
| JP4045507 | Soft foam molded product with spacer |
Inventors:
ZHANG SHIQIANG (CN)
ZHANG CHENGPENG (CN)
LI HAO (CN)
LI YUN (CN)
CAO YUNTAO (CN)
WANG SHI (CN)
LUO BAICHENG (CN)
ZHANG CHENGPENG (CN)
LI HAO (CN)
LI YUN (CN)
CAO YUNTAO (CN)
WANG SHI (CN)
LUO BAICHENG (CN)
Application Number:
PCT/CN2022/105938
Publication Date:
August 17, 2023
Filing Date:
July 15, 2022
Export Citation:
Assignee:
CHINA FAW CO LTD (CN)
International Classes:
G10K11/16; H04R3/02
Foreign References:
| CN114677997A | 2022-06-28 | |||
| CN108189724A | 2018-06-22 | |||
| CN111613202A | 2020-09-01 | |||
| CN113593517A | 2021-11-02 | |||
| US20180190258A1 | 2018-07-05 | |||
| CN112509546A | 2021-03-16 |
Other References:
张士强 (ZHANG, SHIQIANG): "乘用车内发动机噪声的主动控制 (Non-official translation: Active Control of Engine Noise In A Passenger Vehicle)", 中国优秀硕士学位论文全文数据库 (CHINA MASTER’S THESES FULL-TEXT DATABASE), 8 June 2020 (2020-06-08)
陈祥军 (CHEN, XIANGJUN): "基于陷波延时LMS算法的乘用车内自适应有源噪声控制技术研究 (Research on Self-adaptive Active Noise Control Technology in a Passenger Vehicle based on a Notch Delay LMS Algorithm)", 中国优秀硕士学位论文全文数据库 (CHINA MASTER’S THESES FULL-TEXT DATABASE), 11 April 2019 (2019-04-11)
陈祥军 (CHEN, XIANGJUN): "基于陷波延时LMS算法的乘用车内自适应有源噪声控制技术研究 (Research on Self-adaptive Active Noise Control Technology in a Passenger Vehicle based on a Notch Delay LMS Algorithm)", 中国优秀硕士学位论文全文数据库 (CHINA MASTER’S THESES FULL-TEXT DATABASE), 11 April 2019 (2019-04-11)
Attorney, Agent or Firm:
HARBIN SHINEIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF:
Previous Patent: METHOD FOR CONTROLLING BRITTLE INCLUSIONS OF TIRE CORD STEEL
Next Patent: NOVEL ALTERNATING-CURRENT ARGON ARC WELDING MACHINE
Next Patent: NOVEL ALTERNATING-CURRENT ARGON ARC WELDING MACHINE