A Model-Based Analysis of Crack Fault in a Two-Stage Spur Gear System

Elyousfi, Bilal; Soualhi, Abdenour; Medjaher, Kamal; Guillet, François

doi:10.1109/phm-besancon49106.2020.00017

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…Some phenomena, such as friction between gear tooth, gearbox housing, and backlash, are ignored by this model. The following notation was used in this study [25,26]…”

Section: Modeling Of Two Stages Gearboxmentioning

confidence: 99%

“…Some phenomena, such as friction between gear tooth, gearbox housing, and backlash, are ignored by this model. The following notation was used in this study [25,26]: We focused on the model response in the y direction, representing the effect of timevarying mesh stiffness, as the model response in the x direction is transient. According to Newton's second law and considering the previous assumptions, the torsional vibration dynamics equations of the two-stage spur gear are as follows: We focused on the model response in the y direction, representing the effect of timevarying mesh stiffness, as the model response in the x direction is transient.…”

Section: Modeling Of Two Stages Gearboxmentioning

confidence: 99%

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Wind Turbine Gearbox Diagnosis Based on Stator Current

Issaadi,

Hemsas,

Soualhi

2023

Energies

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Early detection of faults in wind energy systems can reduce downtime, operating, and maintenance costs while increasing productivity. This paper proposes a method based on the analysis of generator stator current signals to detect faults in a wind turbine gearbox equipped with a doubly fed induction generator (DFIG). A localized parameter model was established to simulate the vibratory response of a two-stage gear system under healthy and faulty conditions. The simulation was performed in the MATLAB/Simulink environment. The results include a detailed analysis of the mechanical part of the gearbox, highlighting mesh stiffness, output speed, and accelerations. Additionally, the electrical part was evaluated based on the current supplied by the doubly fed induction generator. The results were presented in the case of healthy gears and in the presence of faults such as a broken or cracked tooth. Fast Fourier transform (FFT) analysis was employed to detect gear defects in the stator current signal. The presence of a crack or broken tooth in the gearbox induces modulation of the DFIG stator current signals according to the shaft frequencies corresponding to the faulty gear. These findings provide a preliminary basis for the detection and diagnosis of this type of failure.

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“…Some phenomena, such as friction between gear tooth, gearbox housing, and backlash, are ignored by this model. The following notation was used in this study [25,26]…”

Section: Modeling Of Two Stages Gearboxmentioning

confidence: 99%

Section: Modeling Of Two Stages Gearboxmentioning

confidence: 99%

Wind Turbine Gearbox Diagnosis Based on Stator Current

Issaadi,

Hemsas,

Soualhi

2023

Energies

Self Cite

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“…Dynamic modeling has always been an efficient tool to predict the response of motorgearbox systems under varying operating conditions. A set of models were proposed in the literature to simulate gearboxes and induction machine responses; among them, numerical models based on the finite element method (FEM) and analytical models based on the lumped parameter method (LPM) were the most popular ones [5][6][7][8][9]. FEM-based models generally provide more precise results and a high fidelity to the original system.…”

Section: Introductionmentioning

confidence: 99%

A New Analytical Method for Modeling the Effect of Assembly Errors on a Motor-Gearbox System

et al. 2021

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The well-known gear tooth defects such as root cracks and flank spalls have been widely investigated in previous studies to model their effects on the time varying mesh stiffness (TVMS) and consequently the dynamic response of motor-gearbox systems. Nevertheless, the effect of assembly errors such as the center distance and the eccentricity has been less considered in past works. Determining the signature of these errors on the system response can help for their early detection and diagnostic to avoid overloading and failure of gears. An original geometric-based method combined with the potential energy method is proposed in this paper to accurately model the effect of these assembly errors on the TVMS of mating spur gear pairs. This is achieved by updating the line of action equation (LOA) at each meshing step using the actual coordinates of gear centers and employing a contact detection algorithm (CDA) to determine the actual contact points coordinates. An electrical model of a three-phase induction machine was then coupled with a dynamic model of a one-stage spur gear system to simulate the effect of assembly errors on the electromechanical response of the motor-gearbox system. The simulation results showed that the center distance error induces a reduction in the TVMS magnitude and the contact ratio, whereas the eccentricity error causes a double modulation of the TVMS magnitude and frequency. In addition, the results showed that assembly errors can be detected and diagnosed by analyzing the system vibration and the motor phase-current.

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Research on Dynamic Characteristics of Two-Stage Gear System with Fatigue Cracks

Li,

Bai,

et al. 2024

J Fail. Anal. and Preven.

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A Model-Based Analysis of Crack Fault in a Two-Stage Spur Gear System

Cited by 3 publications

References 16 publications

Wind Turbine Gearbox Diagnosis Based on Stator Current

Wind Turbine Gearbox Diagnosis Based on Stator Current

A New Analytical Method for Modeling the Effect of Assembly Errors on a Motor-Gearbox System

Research on Dynamic Characteristics of Two-Stage Gear System with Fatigue Cracks

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