Wind tunnel test noise pulsating pressure determination method and device
The embodiment of the invention provides a wind tunnel test near-field noise pulsating pressure determination method, which comprises the following steps: acquiring a first pulsating pressure sequence of a far field and a second pulsating pressure sequence of a near field of a wind tunnel test objec...
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| creator | RUAN JIAMING NI DAMING BAI BAOHONG ZHANG WEIGUANG ZHANG YINGZHE |
| description | The embodiment of the invention provides a wind tunnel test near-field noise pulsating pressure determination method, which comprises the following steps: acquiring a first pulsating pressure sequence of a far field and a second pulsating pressure sequence of a near field of a wind tunnel test object, and carrying out continuous wavelet transform on the second pulsating pressure sequence to obtain a wavelet coefficient matrix; carrying out iterative calculation operation for at least two times; comprising the steps that a new wavelet coefficient threshold value is determined, a new noise pulsating pressure sequence is determined according to the newest wavelet coefficient threshold value and a wavelet coefficient matrix, and a cross correlation coefficient sequence of a first pulsating pressure sequence and the newest noise pulsating pressure sequence is determined; starting from the second iterative calculation operation, judging whether a cross correlation coefficient meeting a preset condition exists or no |
| format | Patent |
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carrying out iterative calculation operation for at least two times; comprising the steps that a new wavelet coefficient threshold value is determined, a new noise pulsating pressure sequence is determined according to the newest wavelet coefficient threshold value and a wavelet coefficient matrix, and a cross correlation coefficient sequence of a first pulsating pressure sequence and the newest noise pulsating pressure sequence is determined; starting from the second iterative calculation operation, judging whether a cross correlation coefficient meeting a preset condition exists or no</description><language>chi ; eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; MEASURING ; PHYSICS ; TESTING ; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES ; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240412&DB=EPODOC&CC=CN&NR=117874921A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240412&DB=EPODOC&CC=CN&NR=117874921A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>RUAN JIAMING</creatorcontrib><creatorcontrib>NI DAMING</creatorcontrib><creatorcontrib>BAI BAOHONG</creatorcontrib><creatorcontrib>ZHANG WEIGUANG</creatorcontrib><creatorcontrib>ZHANG YINGZHE</creatorcontrib><title>Wind tunnel test noise pulsating pressure determination method and device</title><description>The embodiment of the invention provides a wind tunnel test near-field noise pulsating pressure determination method, which comprises the following steps: acquiring a first pulsating pressure sequence of a far field and a second pulsating pressure sequence of a near field of a wind tunnel test object, and carrying out continuous wavelet transform on the second pulsating pressure sequence to obtain a wavelet coefficient matrix; carrying out iterative calculation operation for at least two times; comprising the steps that a new wavelet coefficient threshold value is determined, a new noise pulsating pressure sequence is determined according to the newest wavelet coefficient threshold value and a wavelet coefficient matrix, and a cross correlation coefficient sequence of a first pulsating pressure sequence and the newest noise pulsating pressure sequence is determined; starting from the second iterative calculation operation, judging whether a cross correlation coefficient meeting a preset condition exists or no</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>TESTING</subject><subject>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</subject><subject>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi7EKAjEQBdNYiPoP6wdYRIXTUg5FGyvB8giX5xnIbUJ24_d7hR9gNTDMzM3tGdiTVmZEUogSpyCgXKM4DTxQLhCpBeShKGPgSSemEfpOntx0e3xCj6WZvVwUrH5cmPXl_GivG-TUQbLrwdCuvVvbHJr9cWtPu3-aLy2oNU0</recordid><startdate>20240412</startdate><enddate>20240412</enddate><creator>RUAN JIAMING</creator><creator>NI DAMING</creator><creator>BAI BAOHONG</creator><creator>ZHANG WEIGUANG</creator><creator>ZHANG YINGZHE</creator><scope>EVB</scope></search><sort><creationdate>20240412</creationdate><title>Wind tunnel test noise pulsating pressure determination method and device</title><author>RUAN JIAMING ; NI DAMING ; BAI BAOHONG ; ZHANG WEIGUANG ; ZHANG YINGZHE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN117874921A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2024</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>TESTING</topic><topic>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</topic><topic>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</topic><toplevel>online_resources</toplevel><creatorcontrib>RUAN JIAMING</creatorcontrib><creatorcontrib>NI DAMING</creatorcontrib><creatorcontrib>BAI BAOHONG</creatorcontrib><creatorcontrib>ZHANG WEIGUANG</creatorcontrib><creatorcontrib>ZHANG YINGZHE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RUAN JIAMING</au><au>NI DAMING</au><au>BAI BAOHONG</au><au>ZHANG WEIGUANG</au><au>ZHANG YINGZHE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Wind tunnel test noise pulsating pressure determination method and device</title><date>2024-04-12</date><risdate>2024</risdate><abstract>The embodiment of the invention provides a wind tunnel test near-field noise pulsating pressure determination method, which comprises the following steps: acquiring a first pulsating pressure sequence of a far field and a second pulsating pressure sequence of a near field of a wind tunnel test object, and carrying out continuous wavelet transform on the second pulsating pressure sequence to obtain a wavelet coefficient matrix; carrying out iterative calculation operation for at least two times; comprising the steps that a new wavelet coefficient threshold value is determined, a new noise pulsating pressure sequence is determined according to the newest wavelet coefficient threshold value and a wavelet coefficient matrix, and a cross correlation coefficient sequence of a first pulsating pressure sequence and the newest noise pulsating pressure sequence is determined; starting from the second iterative calculation operation, judging whether a cross correlation coefficient meeting a preset condition exists or no</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASURING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR |
| title | Wind tunnel test noise pulsating pressure determination method and device |
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