面向波浪能转换的弹性支链并联机构优化设计  

Optimal Design of Parallel Mechanism with Elastic Chains for Wave Energy Conversion

作　　者：姚涛[1,2] 王顺宇 李桐先 王玉龙 YAO Tao;WANG Shun-yu;LI Tong-xian;WANG Yu-ong(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China;National Engineering Re‐search Center for Technological Innovation Method and Tool,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学机械工程学院,天津300130 [2]国家技术创新方法与实施工具工程技术研究中心,天津300130

出　　处：《机械设计与制造》2024年第5期41-45,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金面上项目(51775166)。

摘　　要：基于弹性支链并联机构的波浪能转换装置能够采集多方向不规则的波浪能,并且实现向机械能、电能的转换。装置结构参数设计是影响波能转换效率的主要因素之一。动平台在波浪力作用下存在空间位姿的不断变换,通过建立机构的运动学逆解模型,获得给定动平台位姿下弹簧支链的伸缩变形量。针对机构几何参数及支链弹簧物理参数对弹簧支链变形过程中弹性势能的影响,分别进行单参数试验设计及灵敏度分析,确立将支链弹簧系数、动静平台铰点分布角及分布圆半径、平台之间的高度等相关结构参数作为设计变量。进一步以机构运动过程中弹性支链的最大变形能作为优化目标,基于ADAMS/Insight构建多设计变量优化数学模型,通过求解获得机构最佳设计参数。研究结果对改进波能转换装置设计以及提升波浪能转换效率具有重要的意义。The wave energy conversion device based on elastic branched chain parallel mechanism can collect multi-directional irregular wave energy and realize the conversion to mechanical energy and electrical energy.The structural parameter design of the device is one of the main factors affecting the wave energy conversion efficiency.Under the action of wave force,the spatial posi-tion and pose of the moving platform are constantly changing.By establishing the inverse kinematics model of the mechanism,the expansion deformation of the spring branch chain under the given position and pose of the moving platform is obtained.According to the influence of mechanism geometric parameters and branch spring physical parameters on the elastic potential energy in the process of Spring Branch deformation,the single parameter experimental design and sensitivity analysis are carried out respec-tively,and the relevant structural parameters such as branch spring coefficient,hinge distribution angle and distribution circle ra-dius of dynamic and static platform,and the height between platforms are established as design variables.Furthermore,taking the maximum deformation energy of the elastic chain as the optimization objective,the multi design variable optimization math-ematical model is built based on ADAMS/Insight,and the optimal design parameters of the mechanism are obtained by solving.The research results are of great significance for improving the design of wave energy conversion device and improving the effi-ciency of wave energy conversion.

关 键 词：并联机构 弹性支链 能量转换效率 

分 类 号：TH16[机械工程—机械制造及自动化]