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[1]顾大陆,曾维亮,雷小飞,等.Bang-Bang阀调节的开关型贮供系统压力控制特性[J].火箭推进,2023,49(02):74-82.
　GU Dalu,ZENG Weiliang,LEI Xiaofei,et al.Pressure control characteristics of switch-type storage and supply system regulated by Bang-Bang valve[J].Journal of Rocket Propulsion,2023,49(02):74-82.
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Bang-Bang阀调节的开关型贮供系统压力控制特性

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 49 期数: 2023年02期 页码: 74-82 栏目: 目次 出版日期: 2023-04-25
Title:
Pressure control characteristics of switch-type storage and supply system regulated by Bang-Bang valve
文章编号:
1672-9374(2023)02-0074-09
作者:
顾大陆; 曾维亮; 雷小飞; 靳泓睿
(西安航天动力研究所,陕西 西安 710100)
Author(s):
GU Dalu;  ZENG Weiliang;  LEI Xiaofei;  JIN Hongrui
(Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
关键词:
开关型贮供系统;  减压模块;  Bang-Bang阀;  压力控制特性;  减压周期
Keywords:
switch-type storage and supply system;  decompression module;  Bang-Bang valve;  pressure control characteristic;  decompression period
分类号:
V433
文献标志码:
A
摘要:
针对某射频离子电推进氙气贮供系统长期在轨、高精度减压的技术难点,提出了一种基于双无摩擦电磁阀Bang-Bang控制的开关型贮供系统方案。建立了开关型贮供系统减压模块的气动-控制-电磁-机械动态数学模型,基于AMESim平台搭建了贮供系统的工作特性仿真模型,对贮供系统减压模块中缓冲罐输出压力随时间的变化情况进行了仿真研究,分析了入口压力、缓冲罐容积和中间腔容积对压力控制特性的影响。计算结果表明:通过控制器特定的分布开关控制方式,使Bang-Bang阀组件在一个减压周期内只向缓冲罐补充极少量气体,保证了缓冲罐输出压力能够持续稳定在设定的压力上下限范围内,实现了氙气工质从550 kPa到60 kPa的长时间、高精度减压要求; 入口压力对减压模块调节性能的影响较大,入口压力越大,贮供系统的压力控制精度越低; 贮供系统减压模块的仿真结果与试验结果基本一致,验证了仿真模型和仿真结果的正确性。
Abstract:
In view of the technical difficulties of a radio-frequency ion electric propulsion xenon gas storage and supply system with long-term in-orbit and high precision decompression, a switch-type storage and supply system based on dual frictionless solenoid valve with Bang-Bang control is proposed.A pneumatic-control-electromagnetic-mechanical dynamic mathematical model of the decompression module is established, and a simulation model of working characteristics for the switch-type storage and supply system were established based on the AMESim platform is built.The variation of output pressure in the buffer tank with time for the decompression module of the storage and supply system is simulated.The effects of inlet pressure, buffer tank volume and intermediate chamber volume on pressure control characteristics are analyzed.The results show that the Bang-Bang valve can supply only a small amount of gas to the buffer tank during a decompression period by means of specific distributed switch control mode, which ensures that the output pressure of buffer tank can be continuously stable within the lower and upper limit of the set pressure, and achieves the long-term and high-precision decompression requirements of xenon gas from 550 kPa to 60 kPa.The inlet pressure has a great influence on the pressure control performance of decompression module.The higher the inlet pressure is, the lower the pressure control precision of storage and supply system is.The simulation results of decompression module of storage and supply system are in good agreement with the experimental results, which verifies the correctness of the simulation model and results.

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备注/Memo

收稿日期:2021-10-19; 修回日期:2021-11-26
基金项目:国家联合基金(U1737212)
作者简介:顾大陆(1997—),男,硕士,研究领域为火箭发动机阀门。

更新日期/Last Update: 1900-01-01