Name: a robotic platform to study the foreflipper of the california sea lion
Uploaded: 2017-01-10T12:30:00
Description: Watch this Scientific Journal Video about A Robotic Platform to Study the Foreflipper of the California Sea Lion at JoVE.com

The authors would like to thank the George Washington University Facilitating Fund for financial support of the project. Mr. Patel is grateful the George Washington University School of Engineering and Applied Science Summer Undergraduate Program in Engineering Research and the Undergraduate Research award for financial support. Finally, we are grateful to the GWU Center for Biomemetics and Bioinspired Engineering (COBRE) for use of facilities controlled by the center.

1. Digitalisere en enhed af en Sea Lion Foreflipper <ol><li> Scan et eksemplar af en søløve foreflipper. <ol><li> Anskaf et eksemplar af en søløve flipper fra en afdød person (figur 1a). BEMÆRK: I vores tilfælde blev de indhentet fra Smithsonian Zoological Park i Washington, DC </li><li> Hænge foreflipper lodret fra bunden (hvor foreflipper tillægger dyrets krop). Dette både tillader flipper til at være lige, når scannet, og udsætter hele overfladen til scanning. </li><li> Scan flipper anven...

<ol>
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Den robot flipper apparat vil give os mulighed for at forstå de hydrodynamik i svømning Californien søløver. Dette omfatter den grundlæggende hovedlinjerne producerer slagtilfælde (den &quot;klappe&quot;), såvel som ikke-fysiske variationer, dyreforsøg ikke kan undersøge. Robotic flipper er designet til eksperimentel alsidighed, således, trin 3-hvor flipper selv er lavet-er kritisk i at opnå de ønskede resultater. Mens dette apparat er tydeligvis blot en model af levende system, in situ undersøgels...

Mens forskere har undersøgt de grundlæggende karakteristika for søløver svømning (energetik, udgifter til transport, vindmodstand, lineær hastighed og acceleration 1-3, mangler vi oplysninger om fluid dynamik i systemet. Uden denne viden, begrænser vi potentiel høj hastighed høj manøvredygtighed engineering ansøgninger til kroppen-halefinnen (BCF) bevægelseskomponenter modeller 4. Ved at karakterisere et andet svømning paradigme, håber vi at udvide vores katalog af designværktøjer, især dem med potentiale til at gøre det muligt for mindre støjende, mere listig former for svømning. således , studerer vi den grundlæggende mekanisme af søløve svømning gennem direkte observation af California søløve og laboratorieundersøgelser ved hjælp af en robot søløve foreflipper 5,6. For at gøre dette, vil vi ansætte en almindeligt anvendt teknik til at udforske komplekse biologiske systemer: en robot platform 7. Adskillige bevægelseskomponenter studier-both af at gå 8,9 og svømning 10 -Har været baseret på enten komplekse 11 eller stærkt forenklede 12 mekaniske modeller af dyr. Typisk robot platforme bevarer essensen af modelsystemet, samtidig med at forskere til at udforske store parameter rum 13-15. Mens ikke altid karakteriserer hele systemet, meget er lært gennem disse platforme, som isolerer en enkelt komponent af et lokomotiv system. For eksempel er den grundlæggende funktion ustabile skibsskruer, som frem-og-tilbage fejning af en halefinnen under carangiform svømning, er blevet intenst udforsket gennem eksperimentelle undersøgelser af pitching og / eller hivning paneler 12,16,17,18. I dette tilfælde kan vi isolere visse tilstande af denne komplekse bevægelser på måder, animalsk baserede undersøgelser kan ikke. Disse grundlæggende aspekter af fremdrift kan derefter bruges i konstruktionen af ​​køretøjer, som ikke har brug for den biologiske kompleksitet evolution giver. <p class=&quot;Jove_content&quot;&gt; I dette papir, præsenterer vi en ny platform for at udforske &quot;klappe&quot; fase af søløve fremstød-producerende slagtilfælde. Kun en enkelt foreflipper-den &quot;roboflipper&#39;-indgår i platformen. Dens geometri er afledt præcis fra biologiske scanninger af en California søløve (Zalophus californianus) eksemplar. Den roboflipper aktiveres til at replikere bevægelsen af dyrenes stammer fra tidligere undersøgelser 1. Denne robot flipper vil blive brugt til at undersøge hydrodynamiske ydeevne svømning søløve og til at udforske et bredere parameter plads end dyreforsøg, især af store havpattedyr, kan give.

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			<td height="21" style="height:21px;width:247px;">Artec Eva</td>
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			<td>3D light scanner with resolution of 0.1mm</td>
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			<td>3D light scanner with resolution of 0.5mm</td>
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			<td height="21" style="height:21px;">Hardened Precision 440C Stainless Steel Shaft</td>
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a robotic platform to study the foreflipper of the california sea lion

Den californiske søløve (Zalophus californianus), er en adræt og kraftfuld svømmer. I modsætning til mange succesfulde svømmere (delfiner, tun), de genererer de fleste af deres fremstød med deres store foreflippers. Denne protokol beskriver en robot platform designet til at studere hydrodynamiske ydeevne svømning Californien søløve (Zalophus californianus). Robotten er en model af dyrets foreflipper der aktiveres af motorer til at replikere bevægelsen af ​​sin fremaddrivende slag (den &quot;klappe&quot;). De kinematik i havet løvens fremaddrivende slagtilfælde er udvundet fra videodata af umærket, ikke-forskning søløver på Smithsonian Zoological Park (SNZ). Disse data udgør grundlaget for aktiveringen bevægelse af robot flipper præsenteres her. Geometri robot flipper bygger en på høj opløsning laser scanning af en foreflipper af en voksen kvinde søløve, skaleret til omkring 60% af fuld skala flipper. Den leddelte model har tre joints, efterligne albue, håndled og fingerled af søløve foreflipper. Den robot platform matcher dynamik egenskaber-Reynolds tal og drikkepenge speed-af dyret under acceleration fra resten. Robotic flipper kan anvendes til at bestemme ydeevnen (kræfter og momenter) og deraf FlowFields.

Den ovenfor beskrevne fremgangsmåde giver en robot model af en California sea lion foreflipper. Modellen kan anvendes på to forskellige måder. Den ene er ved at aktivere flipper kun ved roden (figur 6a). I dette tilfælde drivmotoren indstiller rotationshastighed af den første fælles, men den resulterende bevægelse af flipper bestemmes af fluid-struktur interaktion mellem den fleksible flipper og det omgivende vand. Derudover kan vi skabe robot sv?...

Watch this Scientific Journal Video about A Robotic Platform to Study the Foreflipper of the California Sea Lion at JoVE.com

A Robotic Platform to Study the Foreflipper of the California Sea Lion

En robot platform beskrives som vil blive brugt til at studere de hydrodynamiske ydeevne-kræfter og FlowFields-i svømning Californien søløver. Robotten er en model af dyrets foreflipper der aktiveres af motorer til at replikere bevægelsen af ​​sin fremaddrivende slag (den &quot;klappe&quot;).

En robot platform til at studere den Foreflipper af California Sea Lion

The California sea lion (Zalophus californianus), is an agile and powerful swimmer. Unlike many successful swimmers (dolphins, tuna), they generate most ...

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