Mathematics – Optimization and Control
Scientific paper
2011-09-30
Mathematics
Optimization and Control
It have 36 pages, including 7 figures and 7 tables posted in single paper
Scientific paper
Nonlinear constrained optimization problems are encountered in many scientific fields. To utilize the huge calculation power of current computers, many mathematic models are also rebuilt as optimization problems. Most of them have constrained conditions which need to be handled. Borrowing biological concepts, a study is accomplished for dealing with the constraints in the synthesis of a four-bar mechanism. Biologically regarding the constrained condition as a form of selection for characteristics of a population, four new algorithms are proposed, and a new explanation is given for the penalty method. Using these algorithms, three cases are tested in differential-evolution based programs. Better, or comparable, results show that the presented algorithms and methodology may become common means for constraint handling in optimization problems.
Shi Xudong
Wang Liwen
Zhang Wanchuan
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