摘要
气动发动机设计需要考虑多个参数间的耦合对性能优化的影响,且对理想功率、工作效率等多个性能指标难以建立客观的综合评价函数.为此以发动机进气压力和进排气机构部分控制参数为设计变量进行正交设计,利用灰色关联度分析法计算贴合期望指标组合的最优参数组合,并结合参数指标趋势图,依据计算结果对参数区间进行调整,通过有限次循环得到最优设计参数.经测试该算法快速有效,且设计参数与性能指标数量可扩展,对气动发动机的样机设计和实验具有重要的理论和工程意义.
Designing of air powered engine concerns the impact on performance optimization by multi-parameter coupling,and it is complicated to establish the comprehensive evaluation function for multiple performance indicators such as ideal power and efficiency.Therefore the orthogonal design was carried out taking injection pressure,several controlling parameters of valve as design variables.The optimal parameter combination for the expected indicators was obtained using grey relation analysis.In accordance with parameter-indicator trends,parameters＇ ranges were adjusted and through finite calculation loop the best design parameter combination was obtained.The algorithm in which the number of design parameters and performance indicators is multipliable was verified to be fast and effective.A theoretical basis for air powered engine＇s design and experiment was formed.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2013年第6期803-807,共5页
Journal of Beijing University of Aeronautics and Astronautics
关键词
气动发动机
多参数耦合
多目标优化
正交设计
灰色关联度分析
air powered engine
multi-parameter coupling
multi-objective optimization
orthogonal design
grey relation analysis
