带随机载荷振荡浮子式波能转换结构的参数优化设计与功率响应分析  

Parameter Optimization Design and Power Response Analysis of Oscillating Buoy Wave Energy Converters With Random Loads

作　　者：王德莉 杨雯 韦玮 裴海清 徐伟[3] WANG Deli;YANG Wen;WEI Wei;PEI Haiqing;XU Wei(School of Science,Xi’an University of Architecture and Technology,Xi’an 710055,P.R.China;School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an 710072,P.R.China;School of Mathematics and Statistics,Northwestern Polytechnical University,Xi’an 710072,P.R.China)

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]西北工业大学力学与土木建筑学院,西安710072 [3]西北工业大学数学与统计学院,西安710072

出　　处：《应用数学和力学》2024年第12期1515-1529,共15页Applied Mathematics and Mechanics

基　　金：国家自然科学基金(12372033,12002250);陕西数理基础科学研究项目(22JSQ029)。

摘　　要：振荡浮子式波能转换结构是波浪能发电系统的一类核心做功单元,它的研建对于我国沿海地区发展、海洋平台建设等方面的供电瓶颈技术推进上具有重大意义.为研究其机械构型、参数设计、俘能机制,该文建立了多自由度波能转换结构耦合运动模型.通过对粒子群等智能算法进行优化,克服了多自由度迭代规模过大以及局部最优解困境等问题,丰富了算法功能,定性及定量测算了波能转换结构在二/四自由度、线性/非线性阻尼、两场景结构尺寸参数调控下的振荡及俘能效果.验证了多自由度、非线性阻尼等振控条件的俘能优势,同步探寻此类结构的动力学行为规律、参数优化设计及俘能机制高效路径.引入随机载荷以优化模型精度并做进一步探索,总结了噪声差异引致结构俘能效果的作用规律.为实际工程中波浪能转换结构的有效应用模式发展了新思路.The oscillating buoy wave energy converter is a kind of core working unit of wave energy power generation system,and its development is of significances for breaking the power supply bottlenecks in coastal area development and offshore platform construction of in China.Then the coupled motion model for multi-DOF wave energy conversion structures was built to investigate its mechanical configuration,parameter design and energy capture mechanism.Through optimization of the intelligent algorithms such as the particle swarm algorithm,the problems of the too large multi-DOF iteration scale and the local optimal solution dilemma were overcome,the functions of the algorithm were enriched,and the oscillation and energy capture effects of the wave energy converter based on 2D/4D,linear/nonlinear damping and structure dimension parameters in 2 scenarios,were qualitatively and quantitatively evaluated.The capture energy advantages of vibration control conditions of multi-DOF and nonlinear damping,were verified,and the dynamic behavior law,the parameter optimization design and the efficient path of energy capture mechanism were explored simultaneously.Random loads were introduced to optimize the accuracy of the model,and the effects of noise differences on the energy capture were refined.The work provides a new idea for the effective application mode of wave energy conversion structure in practical engineering.

关 键 词：振荡浮子式波能转换结构 耦合模式 算法优化 动力学响应 参数设计 随机载荷 

分 类 号：O322[理学—一般力学与力学基础] O324[理学—力学]