Search for dissertations about: "multi-objective optimisation"

Showing result 1 - 5 of 20 swedish dissertations containing the words multi-objective optimisation.

2. 1. Manufacturing management and decision support using simulation-based multi-objective optimisation

   Author : Leif Pehrsson; David Stockton; Ng Amos; Mats Jackson; Raouf Hamzaoui; Högskolan i Skövde; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Management; Decision Support; simulation; Multi-objective; optimisation; Production systems; Teknik; Technology;

   Abstract : A majority of the established automotive manufacturers are under severe competitive pressure and their long term economic sustainability is threatened. In particular the transformation towards more CO2-efficient energy sources is a huge financial burden for an already investment capital intensive industry. READ MORE

4. 2. A multi-objective evolutionary approach to simulation-based optimisation of real-world problems

   Author : Anna Syberfeldt; Philip Moore; Robert I. John; Amos Ng; Högskolan i Skövde; []
   Keywords : Evolutionary algorithms; simulation-based optimisation; multi-objective optimisation; noise; TECHNOLOGY; TEKNIKVETENSKAP; Teknik; Technology;

   Abstract : This thesis presents a novel evolutionary optimisation algorithm that can improve the quality of solutions in simulation-based optimisation.Simulation-based optimisation is the process of finding optimal parameter settings without explicitly examining each possible configuration of settings. READ MORE

5. 3. Optimisation of Long-Term Industrial Planning

   Author : Peter Forsberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optimisation under uncertainty; Transition strategy optimisation; Investment strategies; Multi-objective decision making;

   Abstract : In this thesis, long-term optimisation methods for industrial transition processes have beendeveloped, taking monetary and environmental considerations into account. Two different methods forinvestment optimisation have been developed. READ MORE

6. 4. Optimisation of Railway Switches and Crossings

   Author : Björn Pålsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel and rail wear; railway turnout; optimisation; switch crossing; dynamic vehicle-turnout interaction;

   Abstract : Methods for simulation-based optimisation of the design of railway turnouts (switches & crossings, S&C) are developed and demonstrated. Building on knowledge of dynamic wheel–rail interaction in turnouts, it is investigated how rail profile degradation can be reduced by the optimisation of geometry and component stiffness of the track superstructure. READ MORE

7. 5. Quasi-analytical Modelling and Optimisation Techniques for Transport Aircraft Design

   Author : Askin T. Isikveren; KTH; []
   Keywords : aircraft; conceptual; design; specifications; atmosphere; geometry; weight; aerodyanmics; propulsion; operational performance; stability and control; constrained multi-objective optimisation; computer aided design; regional; business; high-transonic; ;

   Abstract : The research work presented here focuses on the subject oftransport aircraft design at the pre-design or conceptuallevel. The primary topics addressed are: (1) generation of avast array of new quasi-analytical expressions to permit aconceptual treatment of commercial and business transportaircraft with adequate sensitivity for more advanced tradestudies; (2) review and adoption of a method to predictstability and control characteristics (using the Mitchellmethod); (3) a study of the relative merits between variousmethods in facilitating an expedient and robust constrainedmulti-objective optimisation result within the context oftraditional conceptual design problems (Genetic Algorithms andNelder-Mead Simplex search); (4) creation of a software packageas a new and unique conceptual tool that permits the generationof design proposals in an accurate yet expeditious manner; and,(5) practical demonstration of the new conceptual designsoftware package by undertaking some actual aircraft designproposals. READ MORE