摘要
振动对于水泵电机系统具有较大影响,所以必须及早发现振动,找出振动原因,解决系统的振动问题。但非线性振动问题给振动分析带来了很大的困难。针对该问题,以采用矢量电机的立式多级泵为例,将经验模态分解方法用于振动信号分析,以代替比较传统的频谱分析方法。该方法不但可以更准确地分析振动问题,还可以发现振动的能量分布,为进一步提高系统的效率提供帮助。
Vibration has a great impact on the water pump-motor system, so it is necessary to discover the vibration at initial stage, find out the reason and resolve the problem. However, the non-linear vibration problem causes a huge problem for the vibration analysis. Regarding this prob- lem, the empirical mode decomposition was used to analyze the vibration signals instead of the tra- ditional method of frequency spectrum analysis. Compared with the traditional method, this meth- od can not only analyze the vibration problems more accurately but also find the energy distribution of the vibration, which would help to improve the efficiency of the system further.
出处
《给水排水》
CSCD
北大核心
2013年第8期120-122,共3页
Water & Wastewater Engineering
基金
国家水体污染控制与治理科技重大专项(2011ZX07411-001)
