Identification and modeling of vibration signals in startup stage of electric driven reciprocating pump
How to realize signal modeling and vibration signal characteristic extraction is a very significant topic.A large amount of drilling pump vibration signals are acquired from the indoor tests.The startup signals with time consistency are segmented from these measurement signals and analyzed in detail.There are mainly such five types of vibrations in the startup signals as the pump bodys vibration,whistle vibration,shocks in moving parts,and impacts of the valve lifted off or dropped on the seat,friction or grinding between moving parts.The pump bodys vibration and whistle vibration have good time-frequency characteristics and change very regularity,which are defined as the startup vibration in this paper.The pump bodys vibration signals are modeled by OFMM method.After excluding the OFMM modeling signal,the remaining signal is separated into different integrated components according to their vibration sources by PFM method,a HMM whistle vibration model based on PFM parameters is established.Furthermore,A combination of OFMM and HMM model is used to describe the pump startup vibration.Realistic simulation on the pump startup vibration has been achieved.Signal simulation is also carried out by use of this combination model.This approach is expected to become a powerful tool for drilling pump startup vibration signal analysis and modeling.
Signal modeling Signal separation Signal identification Pump Vibration
Miaorong Lv Mei Li Shigang Shen Baojian Wei
College of Petroleum Engineering, Changzhou University, Changzhou 213016
国际会议
香港
英文
256-262
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）