RRPRR型五杆机构开式轨迹综合研究  

Research on RRPRR Type Five-bar Mechanism Open Trajectory Synthesis

作　　者：辛军炜 邓援超[1] 宋志成 蔡宇飞 XIN Junwei;DENG Yuanchao;SONG Zhicheng;CAI Yufei(School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学机械工程学院,武汉430068

出　　处：《机械设计与研究》2023年第3期52-57,共6页Machine Design And Research

基　　金：科技部创新方法专项资助项目(2020IM020800-01)。

摘　　要：针对RRPRR型五杆机构轨迹综合,构建一种基于傅里叶变换的可适用于开式轨迹曲线的综合方法。对于采用傅里叶变换拟合曲线只能适用于整周期采样点拟合的缺陷,研究使用最小二乘法与傅里叶级数结合的曲线拟合方法拟合期望曲线,使之可以适用于开式以及闭式曲线的拟合。本方法也为其他连杆机构的轨迹拟合提供了可借鉴的方法,文中给出了五杆机构的拟合算例,并证明了该方法的可行性。For the RRPRR type five-bar mechanism trajectory synthesis,a Fourier transform-based synthesis method is constructed that can be applied to open trajectory curves.For the shortcoming that the curve fitting by Fourier transform is only applicable to the whole period sampling point fitting,a curve fitting method combining the least squares method and Fourier series is studied to fit the desired curve so that it can be applied to the open and closed curve fitting.This method also provides a model for fitting the trajectory of other linkage mechanisms.An example of the fitting algorithm for a five-bar mechanism is given in the paper,and the feasibility of the method is demonstrated.

关 键 词：傅里叶变换 最小二乘法 开式曲线 曲线拟合 

分 类 号：TH122[机械工程—机械设计及理论]