Multi-Objective Optimization of Low-Floor Minibus Suspension System Parameters

Šagi, Goran and Lulić, Zoran and Stjepandić, Josip (2013) Multi-Objective Optimization of Low-Floor Minibus Suspension System Parameters. = Multi-Objective Optimization of Low-Floor Minibus Suspension System Parameters. In: 20th ISPE International Conference on Concurrent Engineering, 2-6.09.2013., Melbourne, Australija.

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This paper describes improvements and interaction of multi-objective optimization and simulation tools for the analysis of suspension system kinematics and vehicle dynamics in the conceptual phase of low-floor minibus development. Achieving optimum parameters of the vehicle at this stage of development reduces the possibility of wrong solutions or concepts. Suspension system development process is a challenging task due to the existence of many influential parameters, complex and often conflicting objectives related to stability, handling, ride comfort and other aspects of vehicle dynamics. Also this is a multidisciplinary task which presents a computational and modeling challenge. This task has three fundamental steps: multi-objective problem definition, multi-objective optimization process and multi-criteria decision making. In this research, the focus is on the first two steps. The definition of design variables, objectives and constraints is necessary in the problem definition process. After that in optimization process, the goal is to determine optimal suspension system parameters of low-floor minibus using newly developed optimization model, based on evolutionary algorithms and vehicle dynamics simulations. This paper gives a contribution to the validation of simulation models, the fine adjustment of optimization algorithm parameter values (population size, probability of mutation, crossover or selection, etc.), the analysis of convergence of an evolutionary algorithm, the comparison of the results obtained by evolutionary algorithms with results of other multi-objective optimization methods and the implementation of proposed optimization model for determining optimal suspension system parameters of low-floor minibus.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): concurrent engineering, vehicle dynamics, low-floor minibus, multi-objective optimization, evolutionary algorithms, suspension system parameters
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 400 Department of IC Engines and Mechanical Handling Equipment > 410 Chair of IC Engines and Motor Vehicles
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Date Deposited: 15 Apr 2016 10:46
Last Modified: 01 Mar 2017 11:59

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