基于组合策略的桥式起重机结构优化设计方法

Structure Optimum Design Method for Overhead Traveling Crane Based on Combined Optimization Strategy

针对当前多极值函数全局寻优问题中,各种全局寻优算法具有全局寻优能力但不能确保寻到全局最优的状况。在研究复合形法和正交网格法的基础上,提出了一种新的组合式全局寻优策略。该策略将改进的复合形法和正交网格法进行有机组合,利用正交网格法的稳定性,保证了组合策略优化算法的全局性。该算法应用于桥式起重机结构优化设计,可以更大地降低桥式起重机的制造成本,对桥式起重机的设计和生产具有一定的指导意义,新的组合算法对于约束非线性离散变量优化设计具有一定的参考价值。

Aiming at the optimization arithmetic which has global search optimization ability, but can not ensure to get the global search optimization in multi extremum function, a new kind of compound optimization strategy based on Complex Shape Method and Orthogonal Gridding Method is put forward in this paper. This compound strategy is combined with improved Complex Shape Method and Orthogonal Gridding Method by using of the result stability of Orthogonal Gridding Method, which ensure to get optimization in global search optimization. The examples show that the Combined Optimization Method can not only guarantee global optimization results, but also improve efficiency, which is a better optimization algorithm.