Taking the minimization of the tooth crown of a worm wheel and the maximization of transmission efficiency and the distance from the center as objectives,we establish the mathematical model for the multi-objective optimal design of worm transmission on the condition that the worm wheel and the worm transmission meet the requirements for load,strength and others.

A new method for vehicle crashworthiness multi-objective optimization is proposed based on game theory.

Research on multi-objective optimum design for toroidal drive;

Pareto genetic algorithm for multi-objective optimization design;

Based on the feature of objective function and design aim of transmission parameter, an approach of multi-objective optimization design is set forth.

It is presented in this thesis the description of optimization design and simulation and analysis for a certain single-arm pantograph mechanism and the study about the spring system in the collector head using CAD/CAE technology based on multi-objective optimization design, finite element analysis and virtual prototype technology.

Simulated Annealing Algorithm is applied to the optimal design in the rebuilding of old steam turbine on the basis of the research of the algorithm of multiobjective optimization.