Pressure Characteristic Prediction and Analysis of Deflector Jet Servo Valve Jet-Pan Components

doi:10.12141/j.issn.1000-565X.190867

Journal of South China University of Technology (Natural Science Edition) ›› 2020, Vol. 48 ›› Issue (9): 71-78.doi: 10.12141/j.issn.1000-565X.190867

• Mechanical Engineering • Previous Articles Next Articles

Pressure Characteristic Prediction and Analysis of Deflector Jet Servo Valve Jet-Pan Components

LI Shuanglu¹ YIN Yaobao¹ LIU Minxin¹ YUAN Jiayang² LI Wending³

1． School of Mechanical Engineering，Tongji University，Shanghai 201804，China; 2． Aviation Key Laboratory of Science
and Technology on Aero Electromechanical System Integration，Nanjing Mechatronic and Hydraulic Engineering Research Centre，Nanjing 210061，Jiangsu，China; 3． Shanghai Aerospace Control Technology Institute，Shanghai 201109，China

Received:2019-11-28 Revised:2020-05-11 Online:2020-09-25 Published:2020-09-01
Contact: 訚耀保 (1965-)，男，教授，博士，主要从事电液伺服元件基础理论研究。 E-mail:y-yin@tongji.edu.cn
About author:李双路 (1995-)，男，博士生，主要从事偏转板伺服阀基础理论研究。E-mail: 1710765@ tongji． edu． cn
Supported by:
Supported by the National Natural Science Foundation of China (51775383)，the National Key Research and Development Program of China (2018YFB2001100) and the Shanghai Aerospace Science Technology Innovation Foundation Project (SAST2017093)

Abstract

Abstract: For the asymmetry and poor consistency of recovery pressures in the two receiving cavities of deflector jet servo valve，flow field simulation model considering the size and shape error of the jet-pan was established and the relationship between the shape factors of the jet-pan and the pressure characteristics was studied by using multi-ple linear regression analysis． The neural network algorithm was used to predict the recovery pressure of jet-pan components under different size and shape error combinations，and the shape factors distribution which cause the pressure difference excess was studied as well．Ｒesearch shows that the main factors affecting the recovery pressure include the width of wedge，the width of jet orifice，the thickness of jet-pan，the round corners of receiving cavities and the symmetry of wedge． And the main factors of the pressure difference between the two cavities are the symme-try of the wedge，the verticality of the jet orifice，the symmetry of round corners and the inner angle of the receiving cavities． The pressure difference between the two cavities is in normal distribution． The pressure difference excess is caused by the combination of several factors，but even if all the shape factors meet the design requirements，the pressure difference excess may occur． Experimental results agree with the theoretical results．

Key words: deflector jet servo valve, jet-pan, pressure characteristic, multiple linear regression, neural network, shape factor

CLC Number:

TH137

LI Shuanglu, YIN Yaobao, LIU Minxin, et al. Pressure Characteristic Prediction and Analysis of Deflector Jet Servo Valve Jet-Pan Components[J]. Journal of South China University of Technology (Natural Science Edition), 2020, 48(9): 71-78.

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Pressure Characteristic Prediction and Analysis of Deflector Jet Servo Valve Jet-Pan Components

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