摘要
采用传统FFT频谱分析 ,很难将汽轮发电机组由热影响引起的剧烈振动问题和转子失衡故障有效地区分开。本文依据所建立的转子模型 ,从理论上分析了这类故障和转子失衡振动特征的区别 ,采用了全息差谱技术和初相点分析方法识别和区分了这两类故障 。
When a traditional method based on FFT (Fast Fourier Transformation) frequency spectrum analysis is used, it is very difficult to effectively differentiate between the thermal effects-induced serious vibration problems and rotor loss-of-balance failures occurring in a turbogenerator. With the help of a rotor model built by the authors the difference between the above two types of problem and failure is analyzed from a theoretical viewpoint. Meanwhile, these failures were identified and differentiated by making use of hologram differential spectrum technology and an initial-phase point analysis method. Specific cases in Eng. applications have verified the effectiveness of the above-mentioned method.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2004年第4期343-346,共4页
Journal of Engineering for Thermal Energy and Power
基金
陕西省科委重点科技攻关项目 ( 2 0 0 0K0 9-G12 )
