基于HP滤波和Wiener过程的柱塞泵剩余使用寿命预测
Remaining useful life prediction for piston pump based on HP filter and Wiener process
高文科 1王状状 2张曦文 2王圣垚 3冀宏2
作者信息
- 1. 深圳技术大学中德智能制造学院,广东深圳 518118
- 2. 兰州理工大学能源与动力工程学院,兰州 730030
- 3. 江苏凯恩特机械设备制造有限公司,江苏泰州 225300
- 折叠
摘要
柱塞泵的性能退化主要由关键摩擦副的泄漏加剧所致,通过理论分析关键摩擦副的泄漏量,引入等效间隙的退化率参数和工况因素建立了柱塞泵的总泄漏量计算模型.在考虑测量数据误差的情况下采用HP(Hodrick-Prescott)滤波方法滤除随机噪声,借助柱塞泵总泄漏量计算模型结构,应用Wiener过程构建了滤波后的柱塞泵退化模型,并依此建立了其剩余使用寿命模型.模型分析结果表明:依据HP滤波分解方法所建的退化模型,柱塞泵工作900h失效概率小于1％,而未滤波数据所得失效概率为28％,HP滤波数据更符合实际情况.
Abstract
The performance degradation of the piston pump is mainly caused by the increasing leakage of some key friction pairs.The leakage flow of the key friction pairs was analyzed theoretically,and the total leakage flow of the piston pump was established by introducing the degradation rate parameters of the equivalent clearance and the working condition factors.In the case of considering the measurement error,the HP(Hodrick-Prescott)filtering method was used to filter out the random noise.The degradation model of the piston pump was developed using Wiener process by calculating the total leakage flow of the piston pump after filtering noise.Based on the developed model,the remaining useful life was established.The degradation model analysis results showed the failure probability of the piston pump using HP filter was less than 1％,whereas it was 28％using raw data when the piston pump ran 900 h.Therefore,the degradation model using HP filter is more suitable for the piston pump.
关键词
轴向柱塞泵/HP滤波分解/Wiener过程/性能退化/剩余使用寿命预测Key words
axial piston pump/HP filter decomposition/Wiener process/performance degradation/remaining useful life prediction引用本文复制引用
基金项目
国家自然科学基金(71561016)
国家博士后基金(2019T120964)
深圳技术大学教学改革项目(20231005)
出版年
2024
NETL
NSTL
万方数据