• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (7): 46-53.doi: 10.3901/JME.2016.07.046

• 机械动力学 • 上一篇    下一篇

行星传动系统振动信号数学模型及特征频率分析

黄奕宏, 丁康, 何国林   

  1. 华南理工大学机械与汽车工程学院 广州 510640
  • 出版日期:2016-04-05 发布日期:2016-04-05
  • 作者简介:黄奕宏(通信作者),男,1989年出生。主要研究方向为振动噪声测控与信号处理技术。E-mail:hyh23@live.cn;丁康,男,1957年出生,博士,教授,博士研究生导师。主要研究方向为振动噪声测控与信号处理技术。E-mail:kding@scut.edu.cn;何国林,男,1986年出生,博士研究生。主要研究方向为振动噪声测控与信号处理技术。E-mail:heguolindaoxian@163.com
  • 基金资助:
    国家自然科学基金(51475169,51475160)和广东省自然科学基金团队(S2013030013355)资助项目

Mathematical Model of Planetary Gear Sets’ Vibration Signal and Characteristic Frequency Analysis

HUANG Yihong, DING Kang, HE Guolin   

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640
  • Online:2016-04-05 Published:2016-04-05

摘要: 在行星传动系统振动信号频谱中,存在类似于定轴齿轮传动系统故障信号的调制边带。为了研究行星齿轮传动系统的振动机理,深入研究行星齿轮啮合过程振动信号的传递特点,通过试验与仿真,分析验证了齿圈固定式行星齿轮箱振动信号受传递路径影响的变化规律,结合行星齿轮啮合过程中啮合力的周期性变化影响,推导了行星齿轮传动系统振动信号数学模型。通过仿真分析了两种不同结构类型行星齿轮传动系统振动信号的频谱特性,并分析了啮合频率周围调制边带产生的原因。最后进行了风电齿轮箱的现场测试,通过分析实测振动信号验证了所建立数学模型计算结果的正确性。

关键词: 调制, 幅频函数, 数学模型, 特征频率, 行星齿轮箱

Abstract: There is modulation in the spectrum of planetary gear sets’ vibration signal, which is similar to those of fixed-shaft gear sets’ fault signal. In order to explore the vibration mechanism of planetary gear sets, the characteristics of planetary gear sets vibration is further studied during the power transmission. Experiments and simulation results demonstrated how the vibration is influenced by meshing gear-pair in the transmission path of the planetary gear sets with a fixed ring gear. Meanwhile, considering the variation of meshing force in cyclic periods during the transmission, a mathematical model is established to describe the mechanism. Two types of planetary gear sets with different structures are investigated by simulation analyses to reveal the reason why the modulation sidebands exhibited. Experiments on a wind turbine planetary gearbox validate the effectiveness and correctness of the proposed model.

Key words: amplitude-frequency function, characteristic frequency, mathematical model, modulation, planetary gearbox

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