Academic Journal
齿轮故障影响下机电传动系统动态特性及电流响应分析.
| Τίτλος: | 齿轮故障影响下机电传动系统动态特性及电流响应分析. (Chinese) |
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| Alternate Title: | Analysis of dynamic characteristics and current response of electromechanical drive system under influence of gear fault. (English) |
| Συγγραφείς: | 程 颖, 顾宽昊, 李炳初, 甘 屹 |
| Πηγή: | Journal of Mechanical & Electrical Engineering; Nov2025, Vol. 42 Issue 11, p2073-2083, 11p |
| Θεματικοί όροι: | Fault diagnosis, Electric motors, Spectrum analysis instruments, Numerical control of machine tools, Mechanical failures, Electromechanical effects, System dynamics |
| Abstract (English): | Electromechanical transmission system is widely used in computer numerical control (CNC) machine tools, new energy vehicles, aerospace and other fields. In order to solve the problems of unclear current response mechanism and weak fault diagnosis theory, the dynamic characteristics and current response of electromechanical transmission system under the influence of gear fault are studied. Firstly, the electromechanical coupling model of the transmission system was established, and the lumped parameter model of the motor model and the gearbox were respectively established. Secondly, the improved potential energy method considering the precise tooth profile was used to calculate the meshing stiffness of the gears under health and fault conditions. The magnetic field-oriented control (FOC) speed regulation algorithm was established, and the numerical solution method of the electromechanical coupling model was established. Then, the dynamic response of the electromechanical coupling simulation model under steady state and variable speed was analyzed. Finally, the motor speed control experiment was carried out to study the dynamic characteristics of the electromechanical drive system under steady state and variable speed conditions, and the spectrum and time-frequency analysis of the motor current response under different gear states was carried out. The research results show that the experimental results are basically consistent with the simulation results under steady state. In the experiment, when the motor speed is 1 000 r/ min, the peak current value is 1. 11 A, and when the motor speed rises to stable, the current amplitude drops by about 0. 22 A, and the fault frequency of the faulty gear is generated in the current spectrum. This research can provide guidance for fault diagnosis based on motor current signal analysis. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): | 机电传动系统在数控 (CNC) 机床、新能源汽车、航空航天等领域中有着广泛应用, 为了解决齿轮故障影响下, 机电传动系统电 流响应机理不明、故障诊断理论基础薄弱的问题, 对齿轮故障影响下机电传动系统动态特性及电流响应展开了研究。 首先, 建立了 传动系统的机电耦合模型, 分别建立了电机模型与齿轮箱的集总参数模型; 然后, 采用考虑精确齿形的改进势能法计算了齿轮在健 康和故障下的啮合刚度, 搭建了磁场定向控制 (FOC) 调速算法, 建立了机电耦合模型数值求解方法; 其次, 分析了机电耦合仿真模 型在稳态和变转速工况下的动态响应; 最后, 开展了电机调速控制实验, 研究了稳态及变转速工况下机电传动系统动态特性, 对不 同齿轮状态下电机电流响应进行了频谱分析和时频分析。 研究结果表明: 稳态下实验与仿真结果基本吻合, 实验中当电机转速为 1 000 r /min 时, 电流峰值为 1. 11 A, 转速上升至稳定时电流幅值下降约 0. 22 A, 故障齿轮会在电流频谱中产生故障频率。 该研究能 够为开展基于电机电流信号分析的故障诊断提供指导。 [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: | Complementary Index |
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