Health monitoring of planetary gearbox using motor’s control signals

IF 4.3 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2025-07-12 DOI:10.1016/j.jsv.2025.119332

Dexin Chen, Ming Zhao, Xiaolong Han, Sen Li, Yue Zhang

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引用次数: 0

Abstract

Planetary gearboxes are critical components in modern machines, so it is also crucial to deploy health monitoring for their long-term running. Nevertheless, conventional health monitoring still has a high reliance on extra sensors. Control signals (CS) feedback from the motor provides a new no-extra-sensors measurement for health monitoring. However, the complex coupling relationship between the planetary gearbox and driving motor, and the complicated transmission pattern of planetary-gearbox gear faults in the control system, make the characterization of these faults in CS unclear. Given this, we establish a novel speed-torque dual-couple model, which integrates the motor’s control model and the torsional vibration of the planetary gearbox under nonlinear behaviors as an electromechanical coupling system. Then, we construct a new semi-closed loop control model of this system and reveal the transmission pattern of gear faults in the motor control system. On this basis, we calculate and identify the characterization relationship in the simulation, and verify it in the experiment. The results indicate that this model can effectively characterize the impact of gear faults in planetary gearboxes on CS. In addition, the q-axis current in CS can effectively characterize the degrees of gear faults in planetary gearboxes. This paper provides a theoretical basis for the health monitoring of planetary gearboxes without extra sensors.

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利用电机控制信号对行星齿轮箱进行健康监测

行星齿轮箱是现代机器的关键部件，因此为其长期运行部署健康监测也至关重要。然而，传统的健康监测仍然高度依赖额外的传感器。来自电机的控制信号（CS）反馈为健康监测提供了一种新的无额外传感器测量方法。然而，行星齿轮箱与驱动电机之间复杂的耦合关系，以及控制系统中行星齿轮箱齿轮故障的复杂传递模式，使得CS中这些故障的表征不明确。为此，建立了一种新型的转速-转矩双耦合模型，该模型将电机控制模型与行星齿轮箱非线性行为下的扭转振动作为一个机电耦合系统。在此基础上，建立了该系统的半闭环控制模型，揭示了齿轮故障在电机控制系统中的传递规律。在此基础上，在仿真中计算并识别表征关系，并在实验中进行验证。结果表明，该模型能有效表征行星齿轮箱齿轮故障对CS的影响。此外，CS中的q轴电流可以有效表征行星齿轮箱的齿轮故障程度。为无传感器行星齿轮箱的健康监测提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.