Spool Valve Hydraulic Measurement Flow Pattern Error Based on Variable Discharge Coefficient

Zhuo Lin

doi:10.4028/www.scientific.net/KEM.667.444

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 667Spool Valve Hydraulic Measurement Flow Pattern...

Spool Valve Hydraulic Measurement Flow Pattern Error Based on Variable Discharge Coefficient

Abstract:

Spool valves are the main elements in electro-hydro servo valves. Hydraulic measurement is an important method for spool valve’s null cutting measuring process. Because of the flow pattern transition, the discharge coefficient is a variable. This phenomenon causes errors if we assume the discharge coefficient is a constant as we always do. In this paper, the variable discharge coefficient is considered to the submerged discharge equation, and the flow pattern error is defined. For improving the precision of overlap values measurements, a compensation method of flow pattern error is presented in this paper.

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Periodical:

Key Engineering Materials (Volume 667)

Pages:

444-448

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.667.444

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Online since:

October 2015

Authors:

Zhuo Lin*

Keywords:

Discharge Coefficient, Error Compensation, Flow Pattern, Spool Valve

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* - Corresponding Author

References

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