内外激励耦合下的复杂齿轮传动系统动态特性与诊断方法研究

项目名称： 内外激励耦合下的复杂齿轮传动系统动态特性与诊断方法研究

项目编号： No.51475355

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 雷亚国

作者单位： 西安交通大学

项目金额： 80万元

中文摘要： 本项目以机械装备健康运行的需求为背景，以机械装备的大动脉复杂齿轮传动系统为研究对象，考虑内、外激励两方面因素的耦合作用，对系统的动态特性和故障诊断方法展开研究。针对其内部结构复杂导致多源信号耦合、外部载荷波动增加了故障诊断难度等问题，建立复杂齿轮传动系统的多尺度动力学模型，揭示系统内部各零部件之间、零部件与系统之间动态响应的耦合原理和系统的动态特性，为其故障诊断提供理论依据；建立复杂齿轮传动系统振动信号数值仿真模型，获得不同故障时的振动信号模式，发现载荷波动与故障模式之间的关系；提出针对复杂齿轮传动系统的健康监测特色参数、信号分离与定量诊断方法，阐述载荷波动对系统动态特性与健康状况的作用规律。项目研究成果将为保障复杂齿轮传动系统的安全运行和长寿命使用提供有价值的基础理论与关键技术。

中文关键词： 复杂齿轮传动系统；动态特性；健康状况；故障诊断

英文摘要： To meet the requirement of safe operation of complex gear transmission systems in mechanical equipment, this project will investigate dynamic behaviors and fault diagnosis issues of the complex gear systems. The effects of both internal excitation and external excitation on the health conditions of the complex gear systems are taken into account in the project aiming at these problems, such as the internal complicated structure making multi-source signals couple with each other, and external load instantaneous fluctuation adding the difficulty of fault diagnosis, etc. Multi-scale dynamic models from single-stage gear transmission systems to complex systems are developed. Based on these models, the coupling principle of dynamic responses between components and components or components and systems, and the dynamic behaviors are revealed respectively to provide the theoretical foundation for fault diagnosis. Numerical models simulating vibration signals of complex gear transmission systems are established, in which the modes of vibration signals of different fault types are generated, and the effect rule of external load fluctuation on the dynamic behaviors and the health conditions of complex gear systems is found. Special feature parameters, adaptive threshold selection methods, signal separation techniques and methods for health monitoring and fault diagnosis of complex gear transmission systems are proposed to estimate the fault severity degree and diagnose faults quantificationally under varying external load. The research output of the project will provide valuable foundational theories and critical techniques for guaranteeing safe operation and long lifetime usage of complex gear transmission systems.

英文关键词： Complex gear transmission system;Dynamic behavior;Health condition;Fault diagnosis