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[1]孙永鑫,周晨初,张黎辉,等.基于MWorks的自动器-管路系统动态特性仿真[J].火箭推进,2023,49(05):107-116.
　SUN Yongxin,ZHOU Chenchu,ZHANG Lihui,et al.Application of MWorks in dynamic characteristic simulation ofactuator-pipeline system[J].Journal of Rocket Propulsion,2023,49(05):107-116.
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基于MWorks的自动器-管路系统动态特性仿真

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 49 期数: 2023年05期 页码: 107-116 栏目: 目次 出版日期: 2023-10-25
Title:
Application of MWorks in dynamic characteristic simulation ofactuator-pipeline system
文章编号:
1672-9374(2023)05-0107-10
作者:
孙永鑫1; 周晨初2; 张黎辉1; 胡海峰2
(1.北京航空航天大学 宇航学院,北京 100191; 2.西安航天动力研究所 液体火箭发动机技术重点实验室,陕西 西安 710100)
Author(s):
SUN Yongxin1;  ZHOU Chenchu2;  ZHANG Lihui1;  HU Haifeng2
(1.School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; 2.Science and Technology on Liquid Rocket Engine Laboratory, Xi'an AerospacePropulsion Institute, Xi'an 710100, China)
关键词:
动态特性;  自动器管路系统;  MWorks;  数值仿真;  自激振荡
Keywords:
dynamic characteristic;  actuator-pipeline system;  MWorks;  numerical simulation;  self-oscillation
分类号:
V434
文献标志码:
A
摘要:
自动器是液体火箭发动机中用于调控工作过程的关键组件,其稳定性直接关系到系统的可靠性。为研究自动器管路系统的参数对系统动态特性的影响,根据液体火箭发动机系统中流量调节器、单向阀两种典型自动器的工作原理,基于国产自主化系统仿真软件平台MWorks,采用Modelica语言搭建流量调节器—管路系统和单向—管路系统模型,并分别开展了频域特性和时域特性仿真求解。考虑到MWorks以时间为仿真变量,为实现频域特性求解,将拉氏算子设置为全局变量,并通过拉氏算子与频率的关系以及频率随仿真时间变化的函数,得到频域参数随频率的变化曲线。结果表明:在MWorks中可通过以拉氏算子为变量的陈述式方程或传递矩阵形式的频域数学模型来构建液体火箭发动机组件频域模型,并可通过组件连接的方式完成系统动态特性仿真,且仿真结果满足精度需求。
Abstract:
As a key component in liquid rocket engines, the actuator is used to control the working process, and its stability is directly related to the reliability of the system. In order to study the influence of actuator-pipeline system parameters on the dynamic characteristics of the engine system, according to the working principle of the flow regulator and the check valve in the liquid rocket engine system, the model of the flow regulator-pipeline system and the check valve-pipeline system were built by Modelica language on the domestic autonomous system simulation software platform MWorks, and the frequency-domain and time-domain characteristics were simulated respectively. Considering that MWorks takes time as the simulation variable, the Laplace operator was set as the global variable in order to calculate the frequency domain characteristics, and the variation curve of frequency domain parameters with frequency was obtained through the relationship between the Laplace operator with frequency and the function of frequency varying with simulation time. The results show that the frequency domain model of liquid rocket engine components can be constructed by the declarative equation with the Laplace operator as the variable or the frequency domain mathematical model in the form of transfer matrix in MWorks. The system dynamic characteristics simulation can be completed by building the connect relationship, and the simulation results meet the accuracy requirements. The research results can provide reference for the application of MWorks in the dynamic characteristics simulation of liquid rocket engine system.

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备注/Memo

收稿日期:2022-07-14; 修回日期:2022-09-12
作者简介:孙永鑫(1996—),男,硕士,研究领域为液体火箭发动机频域特性仿真。

更新日期/Last Update: 1900-01-01