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Free-motion wind tunnel testing using a three-degree-of-freedom magnetic suspension system
A magnetic suspension system is developed for free-motion wind tunnel testing. An external magnet-yoke open magnetic circuit produces a levitation force acting on the disk magnet in the model, and stable suspension of the model is achieved by PID feedback control using two coils. The suspended model...
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| Published in: | Experiments in fluids 2024-07, Vol.65 (7), Article 107 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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| container_issue | 7 |
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| container_title | Experiments in fluids |
| container_volume | 65 |
| creator | Ueno, Kazuyuki Sato, Takushi Takeda, Yuki Nagasaka, Reo Kikuchi, Mamoru |
| description | A magnetic suspension system is developed for free-motion wind tunnel testing. An external magnet-yoke open magnetic circuit produces a levitation force acting on the disk magnet in the model, and stable suspension of the model is achieved by PID feedback control using two coils. The suspended models are free from support interference and move in three degrees of freedom in the wind tunnel. The pitch rotation around the
y
-axis and the translational motion in the
xz
plane under the influence of unsteady aerodynamic forces are observed using the motion capture technique. Parameter identification methods using Fourier analysis of the motion capture data are developed to determine the moment slope
C
M
α
, lift slope
C
L
α
and drag coefficient
C
D
. The standard deviations of the identified values of
C
M
α
,
C
L
α
and
C
D
are less than 5%, 8% and 6% of the respective means.
Graphical abstract |
| doi_str_mv | 10.1007/s00348-024-03839-4 |
| format | article |
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y
-axis and the translational motion in the
xz
plane under the influence of unsteady aerodynamic forces are observed using the motion capture technique. Parameter identification methods using Fourier analysis of the motion capture data are developed to determine the moment slope
C
M
α
, lift slope
C
L
α
and drag coefficient
C
D
. The standard deviations of the identified values of
C
M
α
,
C
L
α
and
C
D
are less than 5%, 8% and 6% of the respective means.
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y
-axis and the translational motion in the
xz
plane under the influence of unsteady aerodynamic forces are observed using the motion capture technique. Parameter identification methods using Fourier analysis of the motion capture data are developed to determine the moment slope
C
M
α
, lift slope
C
L
α
and drag coefficient
C
D
. The standard deviations of the identified values of
C
M
α
,
C
L
α
and
C
D
are less than 5%, 8% and 6% of the respective means.
Graphical abstract</description><subject>Aerodynamic forces</subject><subject>Degrees of freedom</subject><subject>Drag coefficients</subject><subject>Engineering</subject><subject>Engineering Fluid Dynamics</subject><subject>Engineering Thermodynamics</subject><subject>Feedback control</subject><subject>Fluid- and Aerodynamics</subject><subject>Fourier analysis</subject><subject>Heat and Mass Transfer</subject><subject>Identification methods</subject><subject>Levitation</subject><subject>Magnetic circuits</subject><subject>Magnetic levitation</subject><subject>Motion capture</subject><subject>Parameter identification</subject><subject>Proportional integral derivative</subject><subject>Research Article</subject><subject>Support interference</subject><subject>Suspension systems</subject><subject>Translational motion</subject><subject>Unsteady aerodynamics</subject><subject>Wind tunnel testing</subject><issn>0723-4864</issn><issn>1432-1114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kL1OwzAYRS0EEqXwAkyRmA2ff5OMqKKAVIkFFhbL9U9I1TjFdoT69iQEiY3Fdzn3ftZB6JrALQEo7xIA4xUGyjGwitWYn6AF4YxiQgg_RQsoKcO8kvwcXaS0AyCihmqB3tfROdz1ue1D8dUGW-QhBLcvsku5DU0xpOnVRf6YQOuaKXqP_Zi274pON8Hl1hRpSAcX0rSTjim77hKdeb1P7uo3l-ht_fC6esKbl8fn1f0GGwqQsQAtvPDci8pTXgrCS-t07aV00ldbTey2JjVIb500xntDSCm1oFpYaixxbIlu5t1D7D-H8dtq1w8xjCcVg1LSUvCajRSdKRP7lKLz6hDbTsejIqAmh2p2qEaH6seh4mOJzaU0wqFx8W_6n9Y3jGh2KA</recordid><startdate>20240701</startdate><enddate>20240701</enddate><creator>Ueno, Kazuyuki</creator><creator>Sato, Takushi</creator><creator>Takeda, Yuki</creator><creator>Nagasaka, Reo</creator><creator>Kikuchi, Mamoru</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-8014-8109</orcidid></search><sort><creationdate>20240701</creationdate><title>Free-motion wind tunnel testing using a three-degree-of-freedom magnetic suspension system</title><author>Ueno, Kazuyuki ; Sato, Takushi ; Takeda, Yuki ; Nagasaka, Reo ; Kikuchi, Mamoru</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c200t-50a5f5f4f58f2475147dea9f66e6f8ba1db91906fde6ccffc1176a52a5d2cd1e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aerodynamic forces</topic><topic>Degrees of freedom</topic><topic>Drag coefficients</topic><topic>Engineering</topic><topic>Engineering Fluid Dynamics</topic><topic>Engineering Thermodynamics</topic><topic>Feedback control</topic><topic>Fluid- and Aerodynamics</topic><topic>Fourier analysis</topic><topic>Heat and Mass Transfer</topic><topic>Identification methods</topic><topic>Levitation</topic><topic>Magnetic circuits</topic><topic>Magnetic levitation</topic><topic>Motion capture</topic><topic>Parameter identification</topic><topic>Proportional integral derivative</topic><topic>Research Article</topic><topic>Support interference</topic><topic>Suspension systems</topic><topic>Translational motion</topic><topic>Unsteady aerodynamics</topic><topic>Wind tunnel testing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ueno, Kazuyuki</creatorcontrib><creatorcontrib>Sato, Takushi</creatorcontrib><creatorcontrib>Takeda, Yuki</creatorcontrib><creatorcontrib>Nagasaka, Reo</creatorcontrib><creatorcontrib>Kikuchi, Mamoru</creatorcontrib><collection>CrossRef</collection><jtitle>Experiments in fluids</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ueno, Kazuyuki</au><au>Sato, Takushi</au><au>Takeda, Yuki</au><au>Nagasaka, Reo</au><au>Kikuchi, Mamoru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Free-motion wind tunnel testing using a three-degree-of-freedom magnetic suspension system</atitle><jtitle>Experiments in fluids</jtitle><stitle>Exp Fluids</stitle><date>2024-07-01</date><risdate>2024</risdate><volume>65</volume><issue>7</issue><artnum>107</artnum><issn>0723-4864</issn><eissn>1432-1114</eissn><abstract>A magnetic suspension system is developed for free-motion wind tunnel testing. An external magnet-yoke open magnetic circuit produces a levitation force acting on the disk magnet in the model, and stable suspension of the model is achieved by PID feedback control using two coils. The suspended models are free from support interference and move in three degrees of freedom in the wind tunnel. The pitch rotation around the
y
-axis and the translational motion in the
xz
plane under the influence of unsteady aerodynamic forces are observed using the motion capture technique. Parameter identification methods using Fourier analysis of the motion capture data are developed to determine the moment slope
C
M
α
, lift slope
C
L
α
and drag coefficient
C
D
. The standard deviations of the identified values of
C
M
α
,
C
L
α
and
C
D
are less than 5%, 8% and 6% of the respective means.
Graphical abstract</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00348-024-03839-4</doi><orcidid>https://orcid.org/0000-0001-8014-8109</orcidid></addata></record> |
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| ispartof | Experiments in fluids, 2024-07, Vol.65 (7), Article 107 |
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| language | eng |
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| source | Springer Nature |
| subjects | Aerodynamic forces Degrees of freedom Drag coefficients Engineering Engineering Fluid Dynamics Engineering Thermodynamics Feedback control Fluid- and Aerodynamics Fourier analysis Heat and Mass Transfer Identification methods Levitation Magnetic circuits Magnetic levitation Motion capture Parameter identification Proportional integral derivative Research Article Support interference Suspension systems Translational motion Unsteady aerodynamics Wind tunnel testing |
| title | Free-motion wind tunnel testing using a three-degree-of-freedom magnetic suspension system |
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