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摆动活齿减速器的动特性及实验研究
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摘要
摆动活齿减速器是一种用于传递两同轴间回转运动的新型少齿差
    行星齿轮传动,在工业上具有广阔的应用前景。对其进行动态特性的
    研究和实验研究具有十分重要的意义。本文应用转子动力学理论、模
    糊可靠性理论、稳健设计方法、传热学理论、模态分析方法及有限元
    方法对摆动活齿减速器转轴系统的振动和可靠性,对减速器的结构参
    数稳健优化设计、稳态温度场以及固有特性进行了研究,开展了摆动
    活齿减速器传动效率实验。研究的内容可概括为以下五个方面:a)摆
    动活齿减速器振动特性及模糊可靠性设计;b)摆动活齿减速器的多目
    标模糊稳健设计;c)摆动活齿减速器有限元模态分析;d)摆动活齿
    减速器的效率实验研究;e)摆动活齿减速器的稳态热分析。
    根据摆动活齿减速器转轴系统的结构特点,运用转子动力学理论
    建立了转轴系统的弯曲振动临界转速计算模型,运用模糊可靠性理论
    对摆动活齿减速器的转轴系统进行了振动模糊可靠性研究。
    应用基于正交设计的稳健设计法建立了摆动活齿减速器的优化设
    计模型,对摆动活齿减速器进行了模糊稳健优化设计,应用模糊综合
    评判法对该优化设计的结果进行评判,最后结合方差分析得到了该减
    速器各设计变量稳健优化设计的最优组合。
    在CAD软件UG中建立了摆动活齿减速器的三维实体装配模型,通
    过二次建模建立了该装配体的有限元分析模型。把该有限元分析模型
    输入到大型有限元分析软件ANSYS中,选用合适的计算、处理方法对
    
     摘要
    其进行了模态分析,得到了该减速器的前十阶固有频率和振型。
     选用合适的仪器和实验方案,设计了摆动活齿减速器传动效率实
    验台,制定了摆动活齿减速器传动效率实验的实验规程,并对实验数
    据的处理方法做出了研究。
     运用传热学理论对摆动活齿减速器的发热机理和稳态温度场分布
    进行了研究,建立了摆动活齿减速器的稳态温度场的热网络模型、功
    率损失计算模型、热传递计算模型及热阻计算模型。绘制了热网络图,
    并根据该网络图建立了摆动活齿减速器的热平衡方程组,分析计算了
    减速器的稳态温度场分布。
With a very vast application vista in industry, swing movable teeth reducer, which is used to transmit rotary motion and power between two shafts with same axis, is a new type of small teeth difference planetary gear driver. It is very important and valuable to do research on the dynamic characteristics and experiment of swing movable teeth reducer. The design methods and theories, such as rotor dynamic theory, modal analysis, fuzzy reliability theory, robust design etc, are introduced to the study of the dynamic characteristics of swing movable teeth reducer in this thesis. This thesis includes the following five aspects: a) analyses of dynamic characteristic of swing movable teeth reducer, and its vibration fuzzy reliability design; b) multi-objective fuzzy robust design of swing movable teeth reducer; c) finite element modal analysis of swing movable teeth reducer; d)the study of efficiency experiment of swing movable teeth reducer; e)steady state thermal analysis of swing movable teeth reducer.
    A method of transfer matrix impedance coupling is used in the research of the dynamic characteristic hi bending vibration of shaft system of swing movable teeth reducer according to the construction peculiarities of swing movable teeth reducer. The calculating model of critical rotational speed in bending vibration of shaft system of swing movable teeth reducer is built. The method and the formula of
    
    
    
    calculating vibration fuzzy reliability of the shaft system are presented.
    A method of robust design based on the orthogonal design is used in the fuzzy optimization design of swing movable teeth reducer. The model of robust optimal design is built. Fuzzy comprehensive evaluation is used to pass judgment on the results of optimization design. At last, the optimal combination of design variables of the swing movable teeth reducer is obtained with the variance analysis.
    A three dimensional solid model of swing movable teeth reducer is built in the CAD software - UG. The modal analysis of the model is done by using the software - ANSYS. The first ten natural frequencies and vibration modes of swing movable teeth reducer are obtained.
    The transmission efficiency experiment table of swing movable teeth reducer is designed. The experiment plans and regulations are proposed. The research on date handling method of the experiment is done.
    The factors causing temperature rising and the distribution of steady-state temperature field of swing movable teeth reducer are analyzed with the heat transfer theory. The thermal network model of steady-state temperature field of swing movable teeth reducer is set up. The calculation models for power losses, heat transfer and thermal resistance of swing movable teeth reducer are established. The thermal network figure of swing movable teeth reducer is drawn. According to the figure, the heat balance equation group of swing movable teeth reducer is built. The distribution of the steady-state temperature field of swing movable teeth reducer is analyzed.
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