摘要
提出一个适合于工程系统的二层优化设计方法,该方法把原始问题分解为两层优化问题,顶层为协调系统优化,底层为若干个子系统优化.为了实现该方法的并行分布式计算,在局域网内建立了一个基于PVM的计算环境.一个3 126杆的空间桁架的优化设计实例验证了该算法的收敛性,并分析在并行分布环境下的加速比和并行效率.
A two-level optimization method for designing engineering systems was advanced, where the original problem was decomposed into a two-level optimization one： ordination system optimization for top level and several subsystem optimization for bottom level. In order to implement parallel distributed computation with this method, a PVM-based computation environment was set up in local network. The convergence was justified by optimization examples of a 3 126-bar three-dimensional truss, and speedup ratio as well as parallel computing efficiency of the method were analyzed also in the parallel distributed environment.
出处
《兰州理工大学学报》
CAS
北大核心
2007年第2期134-136,共3页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(59665002
50605010)
广西教育厅科研基金(桂教科研[2006]26)
关键词
PVM
工程系统
二层优化
PVM
engineering system
two-level optimization
