摘要
针对桑叶采摘机构的采摘工况,通过几何与静力学分析,以采摘机构的基本参数为设计变量,分别以推杆推力最小和采摘机构质量最轻为优化目标,在满足采摘机构的基本尺寸和力学性能的条件限制下,采用加权线性组合法建立多目标优化数学模型,求解桑叶采摘机构的最佳设计方案。经多目标优化后采摘机构质量和推杆推力都相应减小。机构质量减轻可节省生产成本,推杆推力减小使机构打开合理角度时节省时间,提高采摘效率。利用多目标优化方法可获得较好的优化效果,为进一步桑叶采摘机物理样机制作奠定良好基础。
Based on the conditions of mulberry-leaf picking machines,through the geometry and static analysis,the mathematical model of multi-objective optimization featuring weighted linear combination is set up,with both the minimum thrust and the lightest weight taken as the objectives,which ensures the basic size of the picking machine and its mechanical performance,when the basic parameters serve as design variables.The optimum design scheme is worked out after the mathematical model is solved.The weight and the thrust are both reduced.The results show that the reduction of the machine’s weight helps to save the production cost,and the decreasing thrust ensures a reasonable angle,which will save time and improve efficiency.It has proved that thanks to the multi-objective optimization,better results are obtained,which lays a solid foundation for the prototype production of mulberry-leaf picking machines in the future.
作者
胡迎春
胡裔志
牟向伟
HU Ying-chun;HU Yi-zhi;MOU Xiang-wei(Teachers College for Vocational and Technical Education,Guangxi Normal University,Guilin 541004;Guilin Hivision Technology Co.,Ltd.,Guilin 541004)
出处
《机械设计》
CSCD
北大核心
2020年第3期23-27,共5页
Journal of Machine Design
基金
国家自然科学基金资助项目(51565007)
广西科技计划重点研发资助项目(桂科AB17292079).
关键词
几何静力学分析
加权线性组合
参数优化
多目标优化
geometry and static analysis
weighted linear combination
parameter optimization
multi-objective optimization
作者简介
胡迎春(1971—),女,教授,硕士生导师,博士,研究方向:机械结构系统与多学科优化设计。E-mail:148405822@qq.com;通信作者:胡裔志(1967—),男,高级工程师,学士,研究方向:机械电子。E-mail:yizhihu1001@163.com
