Study on Pre-stage Pressure Characteristics of Deflector Electro-hydraulic Servo Valve Considering Velocity Distribution of Secondary Jet

程文豪; 葛声宏; 杨瀚浩; 林文; 朱玉川

doi:10.13433/j.cnki.1003-8728.20230180

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Study on Pre-stage Pressure Characteristics of Deflector Electro-hydraulic Servo Valve Considering Velocity Distribution of Secondary Jet

更新时间：2026-04-23

- Study on Pre-stage Pressure Characteristics of Deflector Electro-hydraulic Servo Valve Considering Velocity Distribution of Secondary Jet
- Mechanical Science and Technology for Aerospace Engineering Vol. 44, Issue 4, Pages: 724-729(2025)
- 作者机构：
  
  1. 南京航空航天大学机电学院,南京,210016
  2. 中航工业南京伺服控制系统有限公司,南京,210032
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20230180
  CLC：
- Published：2025
- 稿件说明：
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程文豪, 葛声宏, 杨瀚浩, et al. Study on Pre-stage Pressure Characteristics of Deflector Electro-hydraulic Servo Valve Considering Velocity Distribution of Secondary Jet[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(4): 724-729.
DOI：

程文豪, 葛声宏, 杨瀚浩, et al. Study on Pre-stage Pressure Characteristics of Deflector Electro-hydraulic Servo Valve Considering Velocity Distribution of Secondary Jet[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(4): 724-729. DOI： 10.13433/j.cnki.1003-8728.20230180.

摘要

针对偏转板电液伺服阀前置级传统数学建模认为二次射流出口速度服从均匀分布的不足，提出二次射流出口速度满足高斯分布。基于平面自由紊动射流理论与液体活塞模型，建立了偏转板电液伺服阀前置级压力特性数学模型。通过有限元仿真和断载压力特性试验表明：相较于传统模型，偏转板位移越大，该模型求解精度越高; 当偏转板位移0.05 mm，求解精度相较传统模型提高了约17%，为偏转板电液伺服阀精确建模与性能分析奠定了基础。

Abstract

Aiming at the shortcomings of traditional mathematical modeling of the pre-stage of the deflector electro-hydraulic servo valve that the outlet velocity on the secondary jet stage obeyed the uniform distribution

the outlet velocity of the secondary jet was proposed to meet the Gaussian distribution. Based on the theory of plane free turbulent jet and liquid piston model

the mathematical model describing the pre-stage pressure characteristics of deflector electro-hydraulic servo valve is established. The simulation and the pressure characteristic test show that compared with the traditional model

the larger the deflector displacement

the more accurate the proposed model. When the deflector plate displacement is 0.05 mm

the accuracy of the proposed model is improved by about 17% compared with the traditional model

which lays a foundation for the accurate modeling and performance analysis of the deflector electro-hydraulic servo valve.

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Related Author

赵小龙

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朱玉川

Related Institution

Technology Center, Avic Xi'an Aero Power Control Technology Co., Ltd.

College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics

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