泵控燃调系统起动振荡分析及优化设计  

Starting Oscillation Analysis and Optimization Design of Pump Controlled Fuel Regulating System

作　　者：司国雷 陈君辉 李彬杰 陆亮[2] 张子哲 SI Guolei;CHEN Junhui;LI Binjie;LU Liang;ZHANG Zizhe(Sichuan Aerospace Fenghuo Servo Control Technology Corporation,Chengdu,Sichuan 611130;School of Mechanical Engineering,Tongji University,Shanghai 201804)

机构地区：[1]四川航天烽火伺服控制技术有限公司,四川成都611130 [2]同济大学机械与能源工程学院,上海201804

出　　处：《液压与气动》2025年第1期114-123,共10页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(52075387、52375060);上海市自然科学基金(22ZR1464400);中国航天科技集团自主研发项目(JSYF-JT-2201)。

摘　　要：针对小型涡扇发动机泵控燃油系统起动工况的振荡问题,建立了电动机、齿轮泵、增压阀及回路的集总参数模型。基于MATLAB/Simulink仿真,得到了增压阀临界开启状态的工作点参数;通过线性化建模得出系统传递函数,绘制伯德图分析了阀芯挡板与阀套间隙和回油阻尼孔直径对系统频域性能指标的影响。结果表明:系统相位裕度较小,其相对稳定性随阀芯挡板与阀套间隙减小而提高,随回油阻尼孔直径减小而提高;通过对系统关键几何参数的设计,改善了系统的相对稳定性。To solve the oscillation problem in the starting condition of pump-controlled fuel system for small-scale turbofan engines,the lumped parameter model of electric motor,gear pump,boosting valve and system circuit is established.Based on MATLAB/Simulink simulation,the working point parameters of the critical opening state of the boosting valve are obtained.The system transfer function is obtained through linear modeling,and the influence of the clearance between valve spool baffle and valve sleeve clearance and diameter of the oil-return damping hole on the frequency domain performance indicators of the system is analyzed by drawing the Bode diagram.The results show that the phase margin of the system is relatively small,and its relative stability increases with the decrease of the clearance between valve spool baffle and valve sleeve clearance and the decrease of the diameter of the oilreturn damping hole.Through the design of the key geometric parameters of the system,the relative stability of the system is improved.

关 键 词：泵控燃调 起动振荡 集总建模分析 稳定性分析 

分 类 号：TH137[机械工程—机械制造及自动化]