关键词: 正交演化算法, 局部搜索, 继电器, 继电器体积

Abstract: Optimal design of relay products determine the design parameters in the given load conditions or environmental conditions，the state of relay products，geometry or other factors within the scope of restrictions，and makes sure of the design parameters，object function，constraints in order to form an optimized design model，and selects the appropriate optimization method to obtain the best design of a series of works.Mathematical model of the relay volume involves in mechanical，electrical，magnetic，thermal，etc.，the objective function and constraints are highly nonlinear function.Traditional evolutionary algorithm is trapped into the local minimum easily.Therefore，based on a simple evolutionary algorithm and combining the base ideology of orthogonal test，applied it to the population initialization，crossover operator，as well as the introduction of adaptive orthogonal local search to prevent local convergence，a new orthogonal evolutionary algorithm is proposed.The series of numerical experiments have proved the efficiency of this algorithm.

Key words: orthogonal evolutionary algorithm, local search, relay, relay volume