基于多学科协同优化的NMOHEMS剖面探头设计

新型远海机动水文环境监测系统(new mobile open-sea hydrologic environment monitoring system,NMOHEMS)剖面探头是海洋水文要素剖面测量的最终执行者,与机载投弃式温度剖面计(airborne expendable bathythermograph,AXBT)探头等相比,具有外形更小、下沉速度更慢、深度分辨率更高等特点.基于多学科设计优化(muhi-disciplinary design optimization,MDO)理论结合专家参与模式,完成了测温剖面探头的优化设计.首先设计探头的概念模型,建立其多学科优化方程,然后利用协同优化方法求解,并根据得到的优化结果提出改进意见,经过反复优化-改进的迭代,最终确定最优设计方案.制作测温剖面探头模型并进行了模型实验,实验结果表明优化设计的测温剖面探头能够满足下沉过程中运动状态平稳,极限速度接近2 m/s等要求.

Design of NMOHEMS profile probe based on multidisciplinary and collaborative optimization

The profile probe of new mobile open-sea hydrologic environment monitoring system(NMOHEMS) is the terminal executive of profile environmental element measurement in the sea,which has some new features compared with airborne expendable bathythermograph(AXBT) probe and etc.,such as smaller volume,lower dropping velocity and higher depth measurement resolution.A temperature profile probe was designed based on the multi-disciplinary design optimization(MDO) method and expert participation mode.Firstly,a conceptual model of the probe was designed,and the multidisciplinary optimum equations were constructed,which were solved using collaborative optimization approach.Improvement suggestions were suggested according to the optimization results,and the optimal scheme was determined after repeated optimization and improvement.The temperature profile probe model was fabricated and model experiment was carried out.The experiment results show that the temperature profile probe has stable motion state in its dropping process,and the limit velocity is close to 2 m/s.