基于灵敏度桑叶采摘机机架多目标轻量化设计  

Multi-objective Lightweight Design of Mulberry Leaf Picker Frame Based on Sensitivity

作　　者：彭帅星 胡迎春[2] PENG Shuaixing;HU Yingchun(Shandong University of Technology,Zibo 255000,China;Guangxi Normal University Vocational and technical teachers College,Guilin 541004,China)

机构地区：[1]山东理工大学科学技术处,山东淄博255000 [2]广西师范大学职业技术师范学院,广西桂林541004

出　　处：《现代农业装备》2025年第2期54-61,共8页Modern Agricultural Equipment

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AB17292079)。

摘　　要：机架对桑叶采摘机的可靠性至关重要,提高采摘机性能需要对机架进行结构设计与优化。首先对机架进行静力学分析、模态分析和灵敏度分析,通过分析得到发动机的工作频率接近桑叶采摘机机架的第6阶固有模态频率,易引起机架共振;为避免共振影响,通过建立多目标优化数学模型并采用基于熵权的模糊物元法得到最优设计方案。经过优化后的桑叶采摘机机架固有频率不仅得到降低,远离电动机工作频率和电动机的启动频率,而且机架质量减小9.629%,最大变形减小11.927%,实现机架结构多目标优化设计。The frame is very important to the reliability of mulberry leaf picker.To improve the performance of mulberry leaf picker,it is necessary to design and optimize the structure of the frame.Firstly,the static analysis,modal analysis and sensitivity analysis of the frame were carried out.Through the analysis,the working frequency of the engine was close to the sixth order natural modal frequency of the frame of the mulberry leaf picker,which was easy to cause the frame resonance.In order to avoid resonance effects,a multi-objective optimization mathematical model was established and the optimal design scheme was obtained by using fuzzy matter-element method based on entropy weight.After optimization,the natural frequency of the mulberry leaf picker frame was not only reduced,far away from the working frequency and starting frequency of the motor,but also the mass of the frame was reduced by 9.629%and the maximum deformation was reduced by 11.927%,realizing the multiobjective optimization of the frame structure.

关 键 词：桑叶采摘机 数学模型 优化设计 

分 类 号：S224.4[农业科学—农业机械化工程]