后插旋转式分插机构“#28023;豚型”#38745;轨迹形成机理及动力学分析

项目名称： 后插旋转式分插机构“#28023;豚型”#38745;轨迹形成机理及动力学分析

项目编号： No.50875244

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 张国凤

作者单位： 浙江理工大学

项目金额： 31万元

中文摘要： 分插机构是插秧机的核心工作部件，其功能是模仿人手的插秧动作，插秧机理复杂，动作轨迹曲线形状直接影响插秧质量。 本项目针对现有旋转式分插机构不能用于步行插秧机的问题，结合理论分析和实验研究，提取步行式插秧机的插秧轨迹曲线特征，以旋转式分插机构为例，通过分析其结构、参数与插秧静轨迹的关系，确定形成"海豚形"插秧静轨迹的关键结构因素，为发明系列新型后插分插机构提供理论基础；对所发明的后插旋转式分插机构进行运动学、动力学分析；利用模糊数学把运动学目标数值化，提出一种非劣解群边界值的自动寻求方法，通过该方法求出"非劣解"群的边界值，作为约束条件，用BP神经网络创建满意度函数，对新机构进行基于满意原理的运动学、动力学性能优化；通过高速录像与动力学测试对机构的运动学和动力学模型进行验证。 该项目已发表论文10篇，其中EI检索9篇，授权发明专利5项、实用新型专利7项、计算机软件著作登记权8项，其中 3 项发明专利已转让给企业。本课题资助项目"旋转式步行插秧机关键技术及其产业化"获教育部高等学校科学研究优秀成果奖（科学技术）二等奖。

中文关键词： 水稻插秧机；后插旋转式分插机构；"海豚型"静轨迹；动力学；优化

英文摘要： Transplanting mechanism is the key part of a rice transplanter. Its function is imitating the act of human transplanting rice seedlings into the field. Transplanting mechanism is very complicated and the transplanting path curve would directly affect quality of transplanting rice seedlings。 In this project,Aiming at the problem of the present rotary-type transplanting mechanism inapplicable to walking-type rice transplanter,the characteristic of transplanting path curves of walking-type rice transplanter have been derived from theoretical analysis and experiments. The key structure factors of forming "dolphin-type" statical transplanting path have been determined by analyzing the relation of structure , parameters and statical transplanting path of the present rotary-type transplanting mechanism. It has been provided theoretical foundation for inventing series new backward transplanting mechanism,kinematics and dynamics of which have been analyzed.A method of automatically seeking the boundary value of non-inferior solution group has been proposed,which figures the kinematics objective. The kinematics and dynamics characterics of these new transplanting mechanism invented have been optimized based on satisfactory-optimization while the boundary values have been seeked automatically to be constraint conditions and satisfaction-degree functions have been established by means of BP neural network. The kinematics and dynamics model have been tested by high-speed photography and image processing technique and dynamics experiment. Founded by this project, 10 papers have been issued, 9 of which are retrieved by EI. 5 inventive patents, 3 of which have been transferred to enterprises, and 7 utility model patent have been authorized, 8 computer software works have been registered and authorized."The key technology and industrialization of the rotary walking-type rice transplanter" won the second prize of Scientific Research Award for outstanding achievements in colleges and universities of Ministry of Education.

英文关键词： rice transplanter;backward transplanting mechanism;"dolphin-type" statical transplanting path;dynamics;optimization