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Test Method Optimization ofSemi-Automatic ParkingFunction
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This is a Master of Science project performed at Volvo Cars in Gothenburg and at The RoyalInstitute of Technology KTH in Stockholm. The project is about optimization of the testmethod for semi-automatic parking. The current test method to verify the parking functions aredescribed in a document called design verification method, DVM. The test method in DVMconsiders each function’s parameter separately which takes a lot of test time and all of thefunctions cannot be tested because of time shortage. The aim of this project is to develop anoptimized test method which can solves this issue and can replace the current test method.There are also some other issues that the project need to deal with, such as the sensor’smeasuring error and the optimization of the distance from vehicle to the curb.The current test methods are based on principle of one factor at a time method, which is verytime consuming. Several other test method such as Factorial Design, Taguchi Design andPlacket Burman Design which are based on the principle of factorial design are thereforestudied. Amongst these the factorial design is chosen since it is an adequate design in term ofreduction of test time and other properties which are beneficial for the aim of this project.The proposed test method is evaluated by first performing a test version with a number ofrelevant inputs parameters for which the process is described in Chapter 3 and the evaluationof the method is described in Chapter 4. In Chapter 5 the process on how the proposed methodcan replace the current method is described.The result of this thesis work is a proposed and verified system verification test method forparking assistance which can also be used for other systems as well on some levels.

Abstract [sv]

Detta Examensarbete är utfört hos Volvo Car Corporation i Göteborg och på KungligaTekniska Högskolan i Stockholm. Projektet grundar sig på att utveckla en optimerad testmetodför semi-automatisk parkering. Den nuvarande testmetoden för funktionsverifiering finnsdokumenterad i ett dokument som kallas för ”metod för designverifiering”, eller ”designverification method (DVM)” på engelska. Testmetoden i DVM behandlar varje funktionsparameter separat, vilket innebär långa testtider och alla funktioner hinner därför inte testasoch verifieras. Syftet med examensarbetet är att utveckla en optimerad testmetod som kanåtgärda detta problem, och ersätta den gamla testmetoden. Metoden ska också angripa ochåtgärda andra förkommande problem som mätfel från sensorer och optimering av sträckanmellan fordonet och trottoarkanten.Den nuvarande testmetoden behandlar en parameter i taget, vilket är mycket tidskrävande.Andra testmetoder såsom Factorial Design, Taguchi Design och Placket-Burman Design, sombehandlar flera parametrar samtidigt har därför studerats. Bland dessa metoder valdes Factorialdesign då metoden ansågs vara mest lämplig för optimering av testtiden.Den föreslagna metoden har evaluerats efter att ha testats med en del relevanta parametrar,processen är utförligt beskriven i kapitel 3 och 4. Kapitel 5 beskriver hur den utvecklademetoden kan ersätta den nuvarande metoden.Resultatet från detta projekt är en utvecklad och verifierad testmetod för systemverifiering avparkeringsassistansen, och kan också användas för andra system till en viss gräns.

Place, publisher, year, edition, pages
2017. , p. 57
Series
TRITA-AVE, ISSN 1651-7660 ; 2017:07
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-228100OAI: oai:DiVA.org:kth-228100DiVA, id: diva2:1206952
External cooperation
Volvo Cars
Examiners
Available from: 2018-05-18 Created: 2018-05-18 Last updated: 2018-05-18Bibliographically approved

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