汽车变速器动态建模轮齿局部缺陷的早期检测-----外文翻译.doc
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汽车变速器动态建模轮齿局部缺陷的早期检测-----外文翻译,abstractdynamic modeling of the gear vibration is a useful tool to study the vibration response of a geared system under various gear parameters and operation c...
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ABSTRACT
Dynamic modeling of the gear vibration is a useful tool to study the vibration response of a geared system under various gear parameters and operation conditions. An improved understanding of vibration signal is required for early detection of incipient gear failure to achieve high reliability. However, the aim of this work is to make use of a 6-degree-of-freedom gear dynamic model including localized tooth defect for early detection of gear failure. The model consists of a gear pair, two shafts, two inertias representing load and prime mover and bearings. The model incorporates the effects of time-varying mesh stiffness and damping, backlash, excitation due to gear errors and modifications. The results indicate that the simulated signal shows that as the defect size increases the amplitude of the acceleration signal shows that as the defect size increases the amplitude of the acceleration signal increases. The crest factor and kurtosis values of the simulated signal increase as the fault increases. Though the crest factor and kurtosis values give similar trends, kurtosis is a better indicator as compared to crest factor.
KEYWORDS: Vibration acceleration, system modeling, Crest Factor, Kurtosis value, defect size, gear meshing, pinion, gear
NOMENCLATURE
JD,J1,J2,JL Drive motor, pinion, gear, and load mass moment of inertia replacement decision in a suitable time.
m1,m2 Masses of pinion and gear.
TD Driving motor torque.
TL Load torque.
TF1,TF2 Friction torque.
C1,C2 Viscous damping coefficient of pinion and gear bearing.
Cm Gear mesh damping.
Km Gear mesh stiffness.
K1,K2 Pinion and gear shaft stiffness.
σ4 The variance square.
N The number of samples.
f The defect width in face direction.
Kk Unit width Hertzian stiffness.
θD, θ1,θ2,θL Angular displacement of driver motor, pinion, gear and load.
θD, θ1,θ2,θL Angular velocity of drive motor, pinion, gear and load.
θD, θ1,θ2,θL Angular acceleration of drive motor, pinion, gear and load.
摘要
在研究齿轮系统中各种齿轮参数的振动响应和操作条件时，齿轮振动的动态建模是一个非常有用的工具。对早期的齿轮检测提出了一种改进理解的振动信号，但还没达到高的可靠性。但是，这项工作的目的是利用一个6自由度的齿轮动力学模型对齿轮轮齿缺陷故障的早期检测。该模型包括一对齿轮副、两个轴、两个惯性负载、动力传动装置和轴承。由于齿轮的误差和变动，该模型被采用时受到变啮合刚度、阻尼、反弹和励磁影响。模拟信号显示的结果表明，随着缺陷尺寸的增加加速度信号的振幅增加。模拟信号的波峰因素和峰值随着缺陷的增加而加重。虽然波峰因素和峰值做同样的趋势，但和波峰因素相比峰值是一个比较好的指标。
关键词：振动加速度、系统建模、波峰因素、峰值、缺陷大小、齿轮啮合、齿轮
专业术语
JD, J1, J2, JL 驱动电机、小齿轮、大齿轮和负载在一定时间内的惯性矩
m1, m2 大齿轮、小齿轮的模数
TD 发动机驱动转矩
TL 负载力矩
TF1, TF2 摩擦力矩
C1，C2 齿轮、轴承的粘滞阻尼系数
Cm 齿轮啮合阻尼
Km 齿轮啮合刚度
K1, K2 齿轮、齿轮轴的刚度
σ4 平方差
N 样本数量
f 宽度方向的缺陷
Kk 单位宽度的刚度
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角位移
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角速度
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角加速度
Dynamic modeling of the gear vibration is a useful tool to study the vibration response of a geared system under various gear parameters and operation conditions. An improved understanding of vibration signal is required for early detection of incipient gear failure to achieve high reliability. However, the aim of this work is to make use of a 6-degree-of-freedom gear dynamic model including localized tooth defect for early detection of gear failure. The model consists of a gear pair, two shafts, two inertias representing load and prime mover and bearings. The model incorporates the effects of time-varying mesh stiffness and damping, backlash, excitation due to gear errors and modifications. The results indicate that the simulated signal shows that as the defect size increases the amplitude of the acceleration signal shows that as the defect size increases the amplitude of the acceleration signal increases. The crest factor and kurtosis values of the simulated signal increase as the fault increases. Though the crest factor and kurtosis values give similar trends, kurtosis is a better indicator as compared to crest factor.
KEYWORDS: Vibration acceleration, system modeling, Crest Factor, Kurtosis value, defect size, gear meshing, pinion, gear
NOMENCLATURE
JD,J1,J2,JL Drive motor, pinion, gear, and load mass moment of inertia replacement decision in a suitable time.
m1,m2 Masses of pinion and gear.
TD Driving motor torque.
TL Load torque.
TF1,TF2 Friction torque.
C1,C2 Viscous damping coefficient of pinion and gear bearing.
Cm Gear mesh damping.
Km Gear mesh stiffness.
K1,K2 Pinion and gear shaft stiffness.
σ4 The variance square.
N The number of samples.
f The defect width in face direction.
Kk Unit width Hertzian stiffness.
θD, θ1,θ2,θL Angular displacement of driver motor, pinion, gear and load.
θD, θ1,θ2,θL Angular velocity of drive motor, pinion, gear and load.
θD, θ1,θ2,θL Angular acceleration of drive motor, pinion, gear and load.
摘要
在研究齿轮系统中各种齿轮参数的振动响应和操作条件时，齿轮振动的动态建模是一个非常有用的工具。对早期的齿轮检测提出了一种改进理解的振动信号，但还没达到高的可靠性。但是，这项工作的目的是利用一个6自由度的齿轮动力学模型对齿轮轮齿缺陷故障的早期检测。该模型包括一对齿轮副、两个轴、两个惯性负载、动力传动装置和轴承。由于齿轮的误差和变动，该模型被采用时受到变啮合刚度、阻尼、反弹和励磁影响。模拟信号显示的结果表明，随着缺陷尺寸的增加加速度信号的振幅增加。模拟信号的波峰因素和峰值随着缺陷的增加而加重。虽然波峰因素和峰值做同样的趋势，但和波峰因素相比峰值是一个比较好的指标。
关键词：振动加速度、系统建模、波峰因素、峰值、缺陷大小、齿轮啮合、齿轮
专业术语
JD, J1, J2, JL 驱动电机、小齿轮、大齿轮和负载在一定时间内的惯性矩
m1, m2 大齿轮、小齿轮的模数
TD 发动机驱动转矩
TL 负载力矩
TF1, TF2 摩擦力矩
C1，C2 齿轮、轴承的粘滞阻尼系数
Cm 齿轮啮合阻尼
Km 齿轮啮合刚度
K1, K2 齿轮、齿轮轴的刚度
σ4 平方差
N 样本数量
f 宽度方向的缺陷
Kk 单位宽度的刚度
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角位移
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角速度
θD, θ1,θ2,θL 驱动电机、小齿轮、大齿轮和负载的角加速度
