基于轴承负荷的转子轴承系统建模与试验研究  

Study on Modeling and Experimental of the Rotor System on Bearing Load

作　　者：孙虎儿[1,2] 杨兆建[1] 梁群龙[1] 庞新宇[1] 

机构地区：[1]太原理工大学机械工程学院,山西太原030024 [2]中北大学机械工程与自动化学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2010年第1期14-18,共5页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50575157);山西省自然科学基金资助项目(2006011057)

摘　　要：为揭示轴承转子系统的轴承负荷特性,提出了在转子系统中在线监测轴承负荷,建立了考虑轴承载荷的转子系统的横向振动模型.通过试验和仿真相结合的方法,研究了轴承负荷与支撑振动的耦合关系.该方法是在轴承座下安装轴承负荷传感器以测轴承的负荷,同时监测支撑的加速度,将实测的负荷代入所建的振动模型进行仿真.将仿真结果与实测加速度信号对比分析,结果表明:仿真得到的加速度信号和实测的加速度信号峰值呈周期性变化,周期相同;支撑振动是由轴承负荷所引起的强迫振动与其它振动信号叠加而成,而支撑振动的特性是受轴承负荷影响的.因此,轴承负荷的变化可以作为轴承转子系统状态估计的一个重要条件.Online monitoring bearing load was presented to exposit the bearing load character of rotorbearing system. The lateral vibration model of the rotor system was established with considering the bearing load. By simulation and experimental research, the coupling relationship between the bearing load and vibration of support was studied. The method detected the bearing load by installing a sensor under the bearing chock, and the acceleration of support was monitored simultaneously. The load signal detected was substituted into the model of vibration to simulate the acceleration. Results show that, the detected acceleration and the simulated one have the same peak cyclic period, the vibration of support is superimposed by the forced vibration aroused by bearing load and the other vibration signals, and its characters are affected by bearing load. So change of bearing load can be as an important condition of state estimation of the rotor system.

关 键 词：轴承负荷 转子系统 建模 标高 

分 类 号：TH113[机械工程—机械设计及理论] TP206[自动化与计算机技术—检测技术与自动化装置]