Genetic Algorithms in Synthesis of Path Generator Four-Bar Mechanism with Maximum Mechanical Advantage

O.A. Shpli (Jordan)


path generator, mechanical advantage, genetic algorithms, optimal synthesis, fourbar mechanism


This work addresses the problem of synthesis of a four bar mechanism as path generator. The path generation requirements are imposed as constraints and the minimum mechanical advantage at the desired positions is maximized. In modeling phase 10 design parameters are identified. The constraint optimization problem is solved using real point genetic algorithms with combined exterior-penalty functions and constraint-reservation technique. The results of the optimization problem are affected by the type of the mechanism, the population size, rate to keep and rates of mating and mutation. A numerical example is presented that indicates the robustness of genetic algorithm and demonstrates the effect of the parameters that affect the solution.

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