Title:
METHOD FOR SOLVING DEGREE OF CONTRIBUTION OF NON-COMBUSTION EXCITATION SIGNAL ON BASIS OF PARTIAL COHERENCE FUNCTION
Document Type and Number:
WIPO Patent Application WO/2022/007382
Kind Code:
A1
Abstract:
A method for solving the degree of contribution of a non-combustion excitation signal on the basis of a partial coherence function. The method comprises: step one, determining a main non-combustion excitation source; step two, determining non-combustion excitation having a primary effect on a vibration signal; and step three, according to the primary non-combustion excitation determined in step two, calculating the degree of contribution of an excitation signal to the vibration signal at a particular frequency by using a partial coherence function. The determination of the degree of contribution of a non-combustion excitation signal to a vibration signal is the basis for researching the elimination of interference in the vibration signal, is conducive to repairing partial combustion information in the vibration signal, and has an important theoretical significance and practical value in extracting combustion information using the vibration signal, monitoring the operating state of an internal combustion engine, closed-loop control over a combustion process, and fault diagnosis.
Inventors:
ZHAO XIULIANG (CN)
WANG LIMEI (CN)
PAN BANGXIONG (CN)
WANG RUOCHEN (CN)
YANG ZHENGYU (CN)
ZHAO MINGMING (CN)
WANG LIMEI (CN)
PAN BANGXIONG (CN)
WANG RUOCHEN (CN)
YANG ZHENGYU (CN)
ZHAO MINGMING (CN)
Application Number:
PCT/CN2021/071201
Publication Date:
January 13, 2022
Filing Date:
January 12, 2021
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
G01M15/12; G01M7/02; G06F17/00
Foreign References:
| CN111964913A | 2020-11-20 | |||
| CN103632017A | 2014-03-12 | |||
| CN107101829A | 2017-08-29 | |||
| CN101839805A | 2010-09-22 | |||
| JPH1194690A | 1999-04-09 | |||
| DE102014204154A1 | 2015-09-10 |
Other References:
WANG YANG, CHENG YONG;JI SHAOBO;LAN XIN: "Coupling Relationship Analysis on the Vibration Signals of Cylinder-Head Surface", HUAZHONG KEJI DAXUE XUEBAO (ZIRAN KEXUE BAN)/JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (NATURAL SCIENCE EDITION), HUAZHONG KEJI DAXUE, CN, vol. 45, no. 4, 30 April 2017 (2017-04-30), CN , pages 78 - 83, XP055885544, ISSN: 1671-4512, DOI: 10.13245/j.hust.170415
LIANG XINGYU, SHU GEQUN,WANG GANGZHI, WANG YANGJUN: "A Study on 3D Vibration of the Crankshaft and Surface Vibration of the Crankcase based on Partial Coherence Function Analysis", AUTOMOTIVE ENGINEERING, vol. 28, no. 3, 25 March 2006 (2006-03-25), pages 271 - 275, XP055885550, DOI: 10.19562/j.chinasae.qcgc.2006.03.014
LIANG XINGYU, SHU GEQUN,WANG GANGZHI, WANG YANGJUN: "A Study on 3D Vibration of the Crankshaft and Surface Vibration of the Crankcase based on Partial Coherence Function Analysis", AUTOMOTIVE ENGINEERING, vol. 28, no. 3, 25 March 2006 (2006-03-25), pages 271 - 275, XP055885550, DOI: 10.19562/j.chinasae.qcgc.2006.03.014
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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