The rubbing fault of a slow - varying rotor system is diagnosed by means of a wavelet time - frequency contour map and good results have been achieved 利用小波时频等高图来诊断质量慢变转子系统碰摩故障，取得了比较好的效果。
Based on analyzing kinematics of the spindle unit under loading , the mathematical models of rigid and flexible rotor system are established 本文在分析主动磁轴承工作原理的基础上，分别建立了刚性、柔性转子系统的数学模型。
Based on this question , theoretical analysis , computer simulation and experimental study on the rub of the rotor system are adopted in this dissertation 本文正是基于这一问题，对转子系统的碰摩现象进行了理论分析、仿真和实验研究。
These coupling phenomenos exert influences all upon structure design of magnetic suspension rotor system , systematic modeling and design of controlling system 这些耦合现象对磁悬浮转子系统的结构设计、系统建模和控制系统的设计都有影响。
The rotor system is studied and analyzed by using the finite - element method , so the finite - element models of the whole rotor system are built 在此基础上，利用有限元方法对转子系统进行了分析与研究，建立了该系统各个组成部分的有限元模型。
By changing these parameters and the z - directional stiffness of the outer - ring , the stiffness and the damping characteristic of the damper can be varied 在转子系统支承中引入摩擦阻尼器能够降低支承刚度，从而降低系统的临界转速，避开工作转速。
By the research on the fault of rotor , knowledge is extracted and database on the base of which many fault of rotors can be diagnosed is founded 通过对转子系统的故障的研究,提取了知识,建立了诊断数据库,基于此数据库可以对多种转子故障进行诊断。
The vibration caused by unbalance of the rotor system is especially strong at critical speed . the methods of reducing the vibration are interested by many - researches 旋转机械的不平衡量引起的振动，在过临界转速时最为强烈，对转子系统的影响较大。
