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625 Uppsatser om Electric motor - Sida 4 av 42

Att leva med implanterad defibrillator : En intervjustudie

                                  The study aimed to explore how patients with ICDs experience their quality of life with a focus on everyday life, electric shocks, and how support from the health service is perceived. The studydesign is descriptive with a qualitative approach. Semi-structured interviews were conducted with seven patients. Data collection lasted for three weeks and interviews were conducted in the participant´s homes, at the participants? workplaces or over the phone.The study shows that most participants have learned to live with the ICD.

Utveckling av snabbfäste och verktyg för byte av sågklinga

This thesis is based upon the work done at Westinghouse electric company (WEC)inVästerås during the spring semester of 2015 and describes the development of a quickcoupler with associated blade changing tool. These are meant to be used togetherwith a sawing tool that the company uses for the dismantling of nuclear reactors,which is performed under water.The aim of the thesis was to develop a complete manufacturing documentation withdrawings and related CAD models which Westinghouse later can use to manufacturethe tool and the quick coupler. It was also included in the assignment to, if necessary,modify parts of the saw tool to adapt these to the intended blade changing tool.A number of visits to the company's workshop was made during the time to study thesaw that the thesis is based upon. The purpose of these visits was to get a better ideaof the dimensions, construction and the field of use of the saw. On three of thoseoccasions various engineers and consultants accompanied us to discuss possibleproblems with different ideas.This was interspersed with information in the form of literature studies on quickcouplers to create a clearer picture of the nature of the task.When enough information had been gathered a functional analysis was made to dividethe main problem into subthis phase the idea and concept generating process took place.The methods used for this was mainly brain writing and brainstorming.

Talmotoriska avvikelser vid Parkinsons sjukdom och vid stamning: en jämförande studie

The following study examined whether similarities in motor speech deficits in Parkinson?s disease and in developmental stuttering could be observed. Furthermore, intelligibility was examined. Assessments of 16 people with Parkinson?s disease, 35 people with developmental stuttering and 49 matched controls were performed with the tests Dysartribedömningen and the Swedish Test of Intelligibility.

Styrning av stegmotor för robot med NICompactRIO

Arbetet handlar om styrning och reglering av stegmotorer och permanentmagnetmotorer, genom attanvända det grafiska programmeringsspråket Labview från National Instruments (NI) tillsammansmed hårdvara i form av NI CompactRIO och NI USB datainsamlingskort. Implementeringen har sketti form av en robot med ett för uppgiften specialbyggt styrsystem, PWM ? styrning av enpermanentmagnetmotor och en egenkonstruerad manöverdosa..

H2 För racing

AbstractMotor sports have been around as long as motor vehicles have been. Sports are often seen as costly polluter but in the same time the motor sports have encourages a large part of development, both for vehicles and other industries. Inventions like rear mirror and ABS brakes come from motor sports. One way to once again drive development forward while making motor sports carbon-neutral is to run the race cars on hydrogen. In this thesis, the goal is to convert a spark ignition engine for hydrogen operation.

Möbius sekvens -Möbius sekvens samt effekter av leendekirurgi hos en person

Möbius sequence is a rare condition where affected cranial nervesoften lead to speech deviations due to reduced oral motor functioning. Thisstudy aimed to survey speech deviations, compensatory strategies and selfperceptionof speech in seven people with Möbius sequence, and to linkthese to oral motor function and intelligibility. Additionally, the immediateeffects of smile surgery were investigated in one person. The abovementioneddomains were studied instrumentally, perceptually and throughstructured interviewing. All participants displayed reduced oral motorfunction.

Konceptstudie av kombinerad nödgenerator-trädgårdsredskap : Concept Study of a Combined Emergency Generator-Garden tool

The present study concerns a concept development of a product idea that Bengt Magnuson, associate professor, had when a heavy storm caused a widespread power failure of long duration. With a basic power-producing unit one should be able to get through a power loss. The product could also be useful for other tasks if different modules are connected, e g grass mower or snow-blower.According to the product idea the basic unit will be able to produce electric power enough for a fridge, freezer, TV, and a few electric lamps. Normally the basic unit can be used e g as a mower, when such a module is attached. An increased number of tasks would make the contraption useful and tempting for those who do not own an electrical power set in reserve.

Utveckling av "All Electric Submarine" något för Sverige?

I ett flertal länder pågår en utveckling av så kallade ?All electric ship? som innebär atttraditionella framdriftsystem bestående av motor-reduktionsväxel-axel-propeller ersätts meddiverse typer av elmotorer som driver propellern. Denna utveckling fortgår även inomfartygens hjälpsystem, det vill säga hydrauliska och pneumatiska pumpar, vridmotorer ochkolvar ersätts med elektriskt drivna aktuatorer. Orsaken till att man driver denna utveckling ärbland annat att minska utstrålat buller, minska energiförbrukning, minskaunderhållskostnader, öka livslängden och öka flexibiliteten i design av fartyg.Syftet med detta självständiga arbete är att utreda vilka tekniskt/taktiska fördelar Sverige kanfå om vi driver utvecklingen av svenska ubåtar mot AES. Detta självständiga arbete kommeratt begränsa sig till ett fåtal av de system som finns ombord på en ubåt och undersöka omdagens hydrauliska system kan ersättas med elektriskt drivna aktuatorer utifrån degrundläggande förmågorna ledning, underrättelser, verkan, rörlighet, uthållighet och skydd.Metoden som används för att analysera dessa eventuella fördelar med en utveckling av ubåtarmot AES är en analys av texter, denna analys bygger på ett kvalitativt tänkande.

Modellering av rotationssystem

This master thesis was conducted during the spring of 2014 at Atlas Copco Rock Drills AB in Örebro. The purpose of the thesis was to develop a simulation model of the rotation system for a hydraulic rock drill. In the future, the model will be used to investigate the phenomena called ?jerky rotation?. In order to validate the simulation model a test bench was designed and tests were made.

Projektering av ett småhus samt ekonomisk jämförelse av värmesystem

Design of a house requires knowledge of both technology and economics. Heating and ventilation shall be designed, costs are calculated and estimated and requirements must be fulfilled. Which heating system is to be elected is also a difficult choice, especially with rising energy prices as a factor.The choice of energy system is not always given, because it depends on several factors. Below is a comparison between district heating, geothermal heat pump and electric boiler from an economic standpoint. In a previous report appears district heating and geothermal heat pump as the best options.

The Developmental Coordination Disorder Questionnaire 2007 som screeningsinstrument för barns motorik : en svensk valideringsstudie

Aim Developmental Coordination Disorder Questionnaire 2007 (DCDQ'07) is an international survey tool based on parents' estimation of their child's motor coordination skills. The purpose of this study was to investigate the validity of a Swedish version of DCDQ'07 by finding out how the classification of Developmental Coordination Disorder (DCD) via DCDQ'07 is consistent with the classification of DCD via the motor impairment test, Movement ABC.MethodIn the context of a larger study, a Swedish translated version of the parent survey DCDQ'07 were sent to 4000 randomly selected families with children aged 8 - 10 years in Stockholm County. The classifications "DCD" or "NOT DCD" with cut-off values ??of 56 (9 years) and 57 (10 years) were applied. Forty families were selected from 410 registered responses.

Optimering av motor och växel i skruvdragarsystem

Examensarbete har utförts på Atlas Copco Tools and Assembly system. Syftet var att utveckla ettkonstruktionshjälpmedel för att underlätta valet av elmotor och växellåda vid nyutveckling avautomatiserade skruvdragarsystem. Ofta görs valet av växellåda och elmotor individuellt vilketkan resultera i ett icke optimalt system. Genom att istället göra valen tillsammans kan ett bättreresultat uppnås.Syftet med examensarbetet var att ta fram ett Matlab- script som ger en bild över hur valet avväxellåda och motor påverkar varandra. Scriptet ska föreslå lämpliga dimensioner på motor ochväxellåda med hänsyn till hela systemet och dess uppgift.

Allsidig rörelsekompetens hos barn och ungdomar : En kartläggning av skolelevers funktionella motorik

Gross motor skills among Swedish pupils. An overview of functional motor abilities among Swedish children and adolescents.IntroductionPhysical Education (PE) teachers in Sweden have noticed that pupils are getting worse in their ability to manage gross motor skills and in their aerobic practice. The gross motor skills and coordinative skills are the solid ground for sports and other health activities. If not developing their gross motor skill children tends to avoid taking part in games and sports. The benefits of sports and outdoor activities such as social and health benefits can therefore be missed.

FASOMSTÄLLNINGSMEKANISM FÖR MOTKOLVS HCCI MOTOR

Examensarbetets syfte var att konstruera en reglermekanism till en HCCI-motor. HCCImotornär en motkolvsmotor med variabel kompression. En motkolvsmotor är i teorinbättre än en vanlig motor på grund av att det går att utvinna arbetet från förbränningen itvå riktningar, värmen verkar på två ytor istället för en. Huvudproblemet med dettaexamensarbete har varit att uppskatta de krafter som verkar i systemet, samt att utvecklaett enkelt sätt att reglera fasen mellan vevaxlarna. Beräkningen av de krafter somuppkommer i reglermekanismen är komplicerad på grund av att mekanismen rör sigunder körning.

Elektrifiering av jordbruksmaskin : Direktkoppling till solföljare och elnät

The agricultural sector is currently highly dependent on fossil fuels, with diesel beingmost prominent. There are however both historical and modern alternatives thathave not been subject to enough evaluation to disregard them as suitable alternative.This report aims to theoretically investigate the feasibility of converting aconventional diesel driven tractor to run on electricity, delivered via a cableconnected to either the main power grid or on-site electric production, such asphotovoltaic. Delivering electricity to the machine via a cable is a method withhistorical roots in the early 20th century and in the present day mining industry.The economic and technological potential of the technique are evaluated, along withthe examination of several different motor powers, voltages, losses and constructionideas. The report finds the technique to be both possible as well as long termeconomically and environmentally beneficial. To realise this method however, somedeviations from the present methods of agricultural farming must be made,considering the more advanced driving patterns, the limited mobility and therequirement for extra driver awareness.

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