飞行器机电伺服系统中谐波齿轮传动力学性能分析与研究

发布时间：2018-06-06 08:23

本文选题：机电伺服系统 + 谐波齿轮传动　；参考：《南京理工大学》2011年硕士论文

【摘要】：飞行器机电伺服系统是在高冲击、高惯性、短时过载工况下工作的,通用谐波齿轮传动的承载能力与动态性能无法满足机电伺服系统高承载、高刚度、高响应、特殊性能指标的要求,因此急需研发一种承载能力大、动态性能好的谐波齿轮传动。论文重点针对谐波齿轮传动的静、动态力学性能进行了分析研究,力求寻找影响谐波齿轮传动承载能力与动态性能的综合因素,为提高其承载能力与动态性能提供理论依据。文中采用ABAQUS有限元软件构建了谐波齿轮传动的有限元分析模型。通过谐波齿轮传动装配体有限元仿真,得出了柔轮初变形与初应力分布规律,从而验证柔轮理论变形函数,并确定了柔轮的危险剖面；当柔轮施加静载荷时,仿真分析得出了柔轮空载与承载工况下变形与应力分布规律,由此揭示了柔轮静载下的承载特性；最后在仿真的基础上试图通过柔轮关键结构参数的改变,研究柔轮综合性能的变化规律,得出了柔轮承载能力、疲劳寿命以及综合刚度的主要影响因素。通过谐波齿轮传动整机动态有限元仿真,得出在不同负载工况(负载大小、负载频率以及负载波形)与输入条件(输入频率、输入波形以及输入转速)下,柔轮变形、应力的时变特性以及谐波齿轮传动动态响应规律。基于上述研究的基础上,文中通过集中参数模型建立了谐波齿轮传动动力学方程。应用S函数编制了谐波齿轮传动弹性变形函数模块,并由Simulink仿真器求解了谐波齿轮传动非线性微分方程的数值解。研究结果验证了动力学模型的准确性,并为谐波传动动态特性分析提供了理论依据。
[Abstract]:The electromechanical servo system of the aircraft is operated under high impact , high inertia and short - time overload condition . The bearing capacity and dynamic performance of the universal harmonic gear transmission cannot meet the requirements of the high load , high rigidity , high response and special performance index of the electromechanical servo system . Therefore , it is urgent to develop a harmonic gear transmission with large bearing capacity and good dynamic performance . The paper mainly analyzes the static and dynamic mechanical properties of harmonic gear transmission , and seeks to find a comprehensive factor influencing the transmission capacity and dynamic performance of harmonic gear transmission , and provides theoretical basis for improving the bearing capacity and dynamic performance of the harmonic gear .

In this paper , the finite element analysis model of harmonic gear transmission is constructed by means of finite element software . By means of finite element simulation of harmonic gear transmission assembly , the law of initial deformation and initial stress distribution of flexspline is obtained , so that the deformation function of flexspline is verified , and the dangerous section of flexspline is determined .
When a static load is applied to the flexspline , the deformation and stress distribution law of the flexible wheel under no - load and load - bearing conditions is obtained , and the bearing characteristics of the flexible wheel under static load are revealed .
Finally , on the basis of simulation , the change law of flexspline ' s comprehensive performance is studied through the change of key structural parameters of the flexspline , and the main influencing factors of the carrying capacity , fatigue life and comprehensive rigidity of the flexspline are obtained .

Through the dynamic finite element simulation of harmonic gear drive , it is concluded that under different load conditions ( load size , load frequency and load waveform ) and input conditions ( input frequency , input waveform and input speed ) , the flexible wheel deformation , the time - varying characteristic of stress and the dynamic response law of harmonic gear drive are obtained .

On the basis of the above research , the harmonic gear transmission dynamics equation is established through the lumped parameter model . The harmonic gear transmission elastic deformation function module is developed by using the S function , and the numerical solution of the harmonic gear transmission nonlinear differential equation is solved by the Simulink simulator . The results of the study validate the accuracy of the dynamic model and provide theoretical basis for the analysis of the dynamic characteristics of harmonic drive .
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.41

【引证文献】