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| 增程器轴系不对中故障动力学响应特性分析 |
| Dynamic response characteristics of shafting misalignment fault for range extender |
| 投稿时间：2018-08-13 |
| DOI： |
| 中文关键词: 增程器 轴系不对中 动力学响应 频谱分析 振动相位 故障诊断 |
| 英文关键词: range extender shafting misalignment dynamic response spectrum analysis vibration phase fault diagnosis |
| 基金项目:国家自然科学基金资助项目(51505345)；湖北省技术创新专项重大项目(2018AAA060)；湖北省中央引导地方科技发展专项资助项目(2018ZYYD027). |
| 作者 | 单位 | E-mail | | 许小伟 | 武汉科技大学汽车与交通工程学院,湖北 武汉,430065 | xxw15@163.com | | 刘振兴 | 武汉科技大学汽车与交通工程学院,湖北 武汉,430065 | | | 严运兵 | 武汉科技大学汽车与交通工程学院,湖北 武汉,430065 | | | 南欣 | 武汉科技大学汽车与交通工程学院,湖北 武汉,430065 | | | 邢家铭 | 武汉科技大学汽车与交通工程学院,湖北 武汉,430065 | |
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| 中文摘要: |
| 通过分析增程器轴系在不对中故障时的运动状态与受力情况,建立增程器轴系的动力学模型,并利用多体动力学软件对增程器轴系平行不对中、偏角不对中、综合不对中三种类型的故障进行仿真,分析不同类型不对中故障产生的动力学响应特性。结果表明,系统振动频谱中1谐次和2谐次的幅值可作为增程器轴系不对中故障诊断特征参数,平行不对中导致2谐次的幅值大幅增长,偏角不对中使1谐次幅值变化明显；增程器轴系左右两侧在2谐次下的振动相位差可进一步对不对中故障类型进行辨识,其中平行不对中故障时轴系两侧振动相位差接近0°,偏角不对中故障时轴系两侧振动相位差接近180°,综合不对中故障时轴系两侧振动相位差远大于180°。 |
| 英文摘要: |
| By analyzing the motion state and stress distribution of range extender under shafting misalignment fault, this paper established the extender shafting dynamics model and simulated the fault types including parallel misalignment, deflection misalignment and mixed misalignment by using multi-body dynamic software. The dynamic response characteristics of different types of misalignment faults were analyzed. The results show that the amplitude of first order and second order in the vibration spectrum of the system can be used as the characteristic parameter of fault diagnosis of range extender under shafting misalignment fault. The parallel misalignment leads to a big increase in the amplitude of the second order, and the angular deviation misalignment leads to a significant change in the amplitude of the first order. The vibration phase difference between the left and right sides of the shaft system of the extender at second harmonic order can further identify the misalignment fault type. When the shaft system has parallel misalignment, the phase difference on both sides of shafting vibration is close to 0°. When the shaft system has angular deviation misalignment, the vibration phase difference between two sides of the shaft system is close to 180°. When the shaft system has mixed misalignment fault, the vibration phase difference between two sides of the shaft system is greater than 180°. |
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