It is very important to eliminate online vibration of a rotor system in order to ensure reliable and efficient rotating machinery operation. In early period of rotor vibration control, a tentative control force is needed. The force may make the system vibration rise or drop, which depends on the relationship between the control force phase and the excitation force phase. Here, based on the rotor system dynamic analysis and controllable characteristics of electromagnetic force, the regional division of the control force phase was done. And the control model was built and some specific optimization strategy was proposed. The finite element analysis method was used to gain the system theoretic lagging angle under working speed. The phase of the control force was determined and this phase was used as the initial value of the optimal parameter to ensure the vibration amplitude being not larger than the initial fault amplitude of the rotor during control. Finally, the test table was established and the test results showed that the proposed method is effective.%在线消除转子系统的振动对保证旋转机械的可靠和高效运行是至关重要的.在转子振动控制初期,需要一个试探性的控制力,该力可能会使系统振动加剧或减小,这取决于控制力与原激振力相位之间的关系.为此该研究在转子系统动力学及电磁力可控特性分析的基础上对控制力相位进行区域划分,建立系统寻优控制模型并提出具体寻优策略;采用有限元分析的方法获取工作转速下转子系统理论滞后角,初步确定控制力相位;以此相位值作为寻优参数起始值,按照既定寻优策略实现转子自动平衡控制,并确保控制全过程转子振幅不大于初始不平衡故障振幅;最后建立实验台并对算法进行实验验证,结果表明该方法是有效的.
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