Fault Modeling for Electro-Hydraulic Servo System Based on Hybrid System

Li Zhou; Xin Hua Jiang; Yan Liu

doi:10.4028/www.scientific.net/AMR.472-475.169

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Fault Modeling for Electro-Hydraulic Servo System...

Fault Modeling for Electro-Hydraulic Servo System Based on Hybrid System

Abstract:

A parametric fault model of electro-hydraulic servo system based on hybrid system and multiple linear regression model was put forward. First of all, the operating condition of electro-hydraulic servo system was abstracted to discrete states, then using multiple linear regression algorithm, the model parameter were identified based on the statistical analysis of sample data. Finally, an electro-hydraulic servo system fault model was constructed combining the fault parameter. Compared to the previous fault model based on experimental modeling method, this model was constructed based on pressure, flow rate sensor data fusion, two parameters are correlated in the base layer, which can effectively improve the diagnostic decision robustness. The parametric fault monitoring and diagnosis experimental showed the effectiveness in fault monitoring.

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Advanced Manufacturing Technology, ICMSE 2012

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Periodical:

Advanced Materials Research (Volumes 472-475)

Pages:

169-173

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.472-475.169

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Online since:

February 2012

Authors:

Li Zhou, Xin Hua Jiang, Yan Liu

Keywords:

Electro-Hydraulic Servo System, Hybrid System, Multiple Linear Regression, Parametric Fault

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References

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