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Adjusting the Front Suspension of a Tesla Model 3 for Drifting
No full textKäesoleva lõputöö üks eesmärkidest oli uurida elektriautode sobivust driftispordi jaoks ning
leida sobiv elektriauto, mida saaks hiljem ümber ehitada ja katseteks kasutada. Esimese
valitud autona oli Tesla Model 3 Performance, mille kere ja vedrustus sai skaneeritud.
Tehasevarustusega auto testiti ning määrati edasine suund. Peale esimest testi selgus, et
„Track Mode´i“ kasutamisel stabiilsuskontroll ega esimootor ei lülitu täielikult välja, mis
tõttu tuli uurida järelturul pakuvataid lahendusi. Lahendusena leiti S3XY Buttons
kasutamise võimalust. Lisaks sellele otsustati vahetada originaaldiferentsiaal Quaife
piiratud läbilibisemisega diferentsiaali vastu, mis tagas parema stabiilsuse ja juhitavuse
libisemise ajal.
Uue testi järel selgus, et libisemise alustamine sõidu ajal on keeruline, kuna elektriautol
puudub sidur ja auto võimsus ei ole piisavalt suur. Seetõttu otsustati paigalda auto külge
hüdrokäsipidur koos lisa pidurisadulatega. Testide käigus saime aru, et olukord paranes ja
autol on potentsiaali, kuid roolinurk on liiga väike ning roolimine närviline. Seni oli see
grupitöö,
mis toimus Tallina Tehnikakõrgkooli ja Wisefab OÜ koostöös,
autokonstrueerimise kursuse raames. Grupitöös osalesid Kirill Tšutšman, Nikita Shamsiev,
Ranet Sikk ja Ivan Netšajev.
Roolinurga suurendamiseks tehti Wisefabi poolt Performance mudeli jaoks lihtsam
vahetükk koos alumise ja ülemise õõtshoovaga, mis andis natuke suurema nurga võrreldes
originaaliga. Samuti paigaldati autole FealSuspensioni poolt toodetud jäigemad vedrud ja
amortisaatorid. Performance mudeli eripära on nelikvedu, mis antud juhul osutus aga
piiravaks teguriks kuna püsikiirusliigend läks vastu võlli, mistõttu ei saanud suuremat
nurka saavutada ning otsustati vahetada neliveoline Performance mudel tagaveolise mudeli
vastu.
Performance mudeliga töö käigus leiti lahendus ka teisele püstitatud eesmärgile: S3XY
Buttons kontroller, mis võimaldas stabiilsuskontrolli täieliku väljalülitamise.
Siit edasi töötas autor iseseisvalt, koostas ja töötas välja lahenduse tagaveolise Model 3
testimiseks. Mis võimaldas suuremat pöördenurka. Autori valis kahe variandi vahel ning
otsustas modifitseerida olemasoleva käänmiku suurema pöördenuga komplekti loomiseks,
et testida elektriauto üldkontseptsiooni. Pärast käänmiku punktide muutmist võimaldava
vahetüki ja hoobade projekteerimist ning valmistamist pandi tagaveoline Model 3 kokku
ning viidi läbi sõidukatsed.
Testide käigus selgus, et auto juhitavus paranes märgatavalt. Nüüd elektriauto oli
võimeline külg ees sõitma, kuid roolikäitumine jäi kehvaks, rool ei jooksnud ise tagasi
keskasendisse, vaatamata Ackermanni ja lahkujooksu seadistusele. Rooli otseks keerav
moment oli väike. Kuigi lõputööd võiks lugeda lõpetatuks, sest kõik eesmärgid olid
saavutatud ning kõik testid läbi viidud, otsustati lahendada ka rooli tagasi jooksmise
probleem.
Selleks otsustati paigaldada BMW E90 elektriline roolilatt koos Wisefab EPS-mooduliga
Tesla Model 3 külge, kuna antud lahendus toimub hästi ka teistel autodel. Lisaks Risto
soovil valmistati kinnitus, mida saaks paigaldada nii Tesla originaalse roolilati asukohta kui
ka võimalikult tahapoole. Selleks valmistati 3 osast koosnev kinnitus, mis sobib antud
ülesande täitmiseks.
Peale BMW roolilati paigaldamist tagaveolisele Tesla Model 3 viidi läbi sõidukatsed. Katsete
ajaks oli BMW roolilatt paigaldatud võimalikult tahapoole. Katsetel selgus, et auto
juhitavus paranes ning auto käitumine ei muutunud oluliselt, sõltumata lahkujooksu
seadistusest. Rool jooksis ise ilusti tagasi, mis oligi roolilati vahetamise ja tahapoole
nihutamise eesmärk.
Autori hinnangul oli lõputöö eesmärk täidetud. Lõputöö käigus valiti elektriauto, millega
viidi läbi testid ning kontrolliti selle võimekust driftimisel. Valmistati prototüüp, millega
valideeriti roolinurga komplekt. Lisaks lahendati töö käigus tekkinud probleem rooliga.
Lõputöö käigus koguti palju uut informatsiooni, mis aitab tulevikus Wisefab OÜ-l välja
töötada uue esivedrustuse komplekti.One of the goals of this thesis was to investigate the suitability of electric cars for drifting
and to find a suitable electric car that could later be rebuilt and used for testing. The first
car chosen was the Tesla Model 3 Performance, the body and suspension of which were
scanned. The car with factory equipment was tested and the future direction was
determined. After the first test, it became clear that when using “Track Mode”, the stability
control and the front engine do not turn off completely, which is why it was necessary to
investigate solutions offered on the aftermarket. The possibility of using S3XY Buttons was
found as a solution. In addition, it was decided to replace the original differential with a
Quaife limited slip differential, which ensured better stability and controllability during a
skid.
After a new test, it became clear that starting a skid while driving is difficult, since the
electric car does not have a clutch and the car’s power is not large enough. Therefore, it
was decided to install a hydraulic handbrake with additional brake calipers on the car.
During the tests, we realized that the situation had improved, and the car has potential,
but the steering angle is too small, and the steering is nervous. Until now, this was a group
work, which took place in cooperation with Tallinn University of Applied Sciences and
Wisefab OÜ, as part of the car design course. Kirill Tsutsman, Nikita Shamsiev, Ranet Sikk
and Ivan Netsajev participated in the group work.
To increase the steering angle, Wisefab made a simpler adapter for the Performance model
with lower and upper control arms, which gave a slightly larger angle compared to the
original. Stiffer springs and shock absorbers produced by FealSuspension were also
installed on the car. The special feature of the Performance model is four-wheel drive,
which in this case turned out to be a limiting factor because the constant velocity joint
went against the shaft, which is why a larger angle could not be achieved, and it was
decided to replace the four-wheel drive Performance model with a rear-wheel drive model.
During the work on the Performance model, a solution was also found for another set goal:
the S3XY Buttons controller, which allowed the stability control to be completely turned
off.
From here on, the author worked independently, compiled and developed a solution for
testing the rear-wheel drive Model 3. Which allowed for a larger steering angle. The author
chose between two options and decided to modify the existing steering knuckle to create
a set with a larger turning radius to test the general concept of the electric car. After
designing and manufacturing the adapter and control arms that allow changing the pivot
points, the rear-wheel drive Model 3 was assembled and driving tests were conducted.
During the tests, it turned out that the car's handling improved significantly. Now the
electric car was able to drive sideways, but the steering behavior remained poor, the
steering wheel did not return to the center position on its own, despite the Ackermann and
toe-in settings. The torque that turned the steering wheel directly was small. Although the
thesis could be considered completed, since all goals had been achieved and all tests had
been carried out, it was decided to also solve the problem of the steering wheel running
back.
For this purpose, it was decided to install a BMW E90 electric steering rack with a Wisefab
EPS module on the Tesla Model 3, since this solution also works well on other cars. In
addition, at Risto's request, a mount was made that could be installed both in the location
of the original Tesla steering rack and as far back as possible. For this purpose, a 3-part
attachment was prepared, which is suitable for the task.
After installing the BMW steering rack on the rear-wheel drive Tesla Model 3, driving tests
were conducted. During the tests, the BMW steering rack was installed as far back as
possible. The tests showed that the car's handling improved, and the car's behavior did not
change significantly, regardless of the offset setting. The steering wheel ran back
beautifully on its own, which was the purpose of replacing the steering rack and moving it
back.
In the author's opinion, the goal of the thesis was met. During the thesis, an electric car
was selected, which was used for tests and its drifting capabilities were checked. A
prototype was prepared, which was used to validate the steering angle kit. In addition, a
problem with the steering wheel that arose during the work was solved. During the thesis,
a lot of new information was collected, which will help Wisefab OÜ develop a new front
suspension kit in the future
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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