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为改进响应面协同优化(CO-RS,Collaborative Optimization based on ResponseSurface)方法的工程实用性,提出改进的CO-RS方法.在响应面建立中应用广义乘子法和信赖域法,取消响应面更新对梯度的依赖性.针对平流层飞艇的总体设计与优化问题,基于改进的CO-RS框架,进行了系统任务分析和学科耦合分析.对气动与推进子系统、结构子系统和能源子系统进行了学科分析,以最小化平流层飞艇的质量为目标,建立基于改进CO-RS框架的多学科设计优化(MDO,Multidisciplinary Design Optimization)模型和相应的学科分析模型.利用iSIGHT软件搭建求解平台,采用改进的CO-RS算法进行仿真计算,并得到合理结果,验证了所建立的MDO模型的合理性和改进的CO-RS算法在平流层飞艇总体设计优化中的有效性.
In order to improve the engineering practicability of the Collaborative Optimization based on Response Surface (CO-RS) method, an improved CO-RS method is proposed.With the application of generalized multiplier method and trust region method in the establishment of response surface, the response surface update Gradient dependence.For the overall design and optimization of the airship, a system task analysis and disciplinary coupling analysis are carried out based on the improved CO-RS framework.Pneumatic and propulsion subsystems, structural subsystems and energy subsystems In order to minimize the quality of the stratospheric airship, a multidisciplinary design optimization (MDO) model and corresponding disciplinary analysis model based on the improved CO-RS framework are established for the discipline analysis.Using iSIGHT software to build a solution platform, The improved CO-RS algorithm is used to simulate and calculate, and the reasonable results are obtained. The rationality of the established MDO model and the effectiveness of the improved CO-RS algorithm in the overall design optimization of the airship are verified.