Comprehensive Alarm Method for Equipment Condition Based on Parzen Window Estimation

LIU Han;ZHANG Qing;MENG Lihua;YANG Kai;XU Guanghua;

Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (3) : 110-114.

PDF(1590 KB)
PDF(1590 KB)
Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (3) : 110-114.
论文

Comprehensive Alarm Method for Equipment Condition Based on Parzen Window Estimation

  • LIU Han1,3, ZHANG Qing1,2, MENG Lihua1, YANG Kai1, XU Guanghua1,2

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Abstract

To improve the adaptability of traditional monitoring and alarming method and fuse multiple monitoring parameters, a comprehensive alarm method for condition monitoring based on Parzen window estimation was proposed. The joint probability density function of multiple monitoring parameters was estimated to describe the distribution of monitoring data. The alarm boundary was set by Parzen window function of monitoring data located in the marginal distribution area. Along with the accumulation of monitoring data, the alarm boundary was continuously adjusted to accommodate new operation performance. The proposed method was evaluated by monitoring data measured on rotor test rig and heating furnace fan. Results show that faults under different running conditions are well identified.

Key words

Parzen window estimation / probability distribution / condition monitoring / comprehensive alarm

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LIU Han;ZHANG Qing;MENG Lihua;YANG Kai;XU Guanghua;. Comprehensive Alarm Method for Equipment Condition Based on Parzen Window Estimation[J]. Journal of Vibration and Shock, 2013, 32(3): 110-114
PDF(1590 KB)

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