考虑激振峰值的三缸压裂泵振动频率控制算法

doi:10.13229/j.cnki.jdxbgxb.20241200

摘要/Abstract

摘要：

三缸压裂泵工作中，其振动频率与固有模态频率重合时，产生的共振现象会加剧压裂泵的振动，引起振动位移幅值剧烈波动，从而导致三缸压裂泵运行的稳定性降低。因此，提出考虑激振峰值的三缸压裂泵振动频率控制算法。通过考虑固有模态频率，即曲柄滑块机构的惯性力、液力端的液压波动力和摩擦力的综合影响，确定三缸压裂泵的激振峰值。采用FBLMS控制算法，对三缸压裂泵激振峰值与其期望目标值之间的误差信号进行频域变换，得到振动频率的响应结果，之后采用FFT技术确定振动信号位置，根据信号位置更新振动加速度权重，从而降低振动位移幅值，实现三缸压裂泵振动频率控制。实验结果显示：该算法有效降低了三缸压裂泵的振动幅值至0.1 μm左右，提高了三缸压裂泵运行的稳定性。

关键词: 激振峰值, 三缸压裂泵, 振动频率, FBLMS算法, FFT技术

Abstract:

When the vibration frequency of the three cylinder fracturing pump coincides with the natural mode frequency during operation， the resonance phenomenon generated will intensify the vibration of the fracturing pump， causing severe fluctuations in the amplitude of the vibration displacement， thereby reducing the stability of the three cylinder fracturing pump operation. Therefore， a vibration frequency control algorithm for three cylinder fracturing pumps considering excitation peak values is proposed. By considering the combined effects of the natural modal frequency， namely the inertia force of the crank slider mechanism， the hydraulic wave force at the hydraulic end， and the frictional force， the excitation peak value of the three cylinder fracturing pump is determined. Using the FBLMS control algorithm， the error signal between the peak excitation value and the expected target value of the three cylinder fracturing pump is transformed in the frequency domain to obtain the response result of the vibration frequency. Then， FFT technology is used to determine the position of the vibration signal， and the vibration acceleration weight is updated based on the signal position to reduce the vibration displacement amplitude and achieve vibration frequency control of the three cylinder fracturing pump. The experimental results show that the algorithm effectively reduces the vibration amplitude of the three cylinder fracturing pump to about 0.1 μm， and improves the stability of the three cylinder fracturing pump operation.

Key words: excitation peak value, three cylinder fracturing pump, vibration frequency, FBLMS algorithm, FFT technology

中图分类号:

TH12

吴文秀,李杨. 考虑激振峰值的三缸压裂泵振动频率控制算法[J]. 吉林大学学报(工学版), 2026, 56(2): 376-382.

Wen-xiu WU,Yang LI. Vibration frequency control algorithm for three cylinder fracturing pump considering excitation peak value[J]. Journal of Jilin University(Engineering and Technology Edition), 2026, 56(2): 376-382.

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名称	数值
柱塞直径/mm	101.6
输出压力/MPa	130.9
输入转速/（r·min^-1）	120
十字头最大线速度/（m·s^-1）	0.96
十字头水平最大加速度/（m·s^-2）	9.88
最大出输扭矩/（N·m）	629 69
初始振动加速度权重	0.1