MATLAB固体火箭冲压发动机壅塞式燃气流量调节装置设计
时间:2018-10-11 15:12 来源:毕业论文 作者:毕业论文 点击:次
| 摘要本文对固体火箭冲压发动机燃气流量调节系统控制方法开展了相关的研究。首先研究了壅塞式燃气流量调节的原理，分析了流量调节特性的主要影响因素，揭示了推进剂压力指数和喷管喉面变化对调节特性的影响规律。设计了一种电动锥阀型燃气流量调节试验测试系统，着重设计了二级锥型调节阀。28956 其次在调节原理的基础上基于小扰动理论建立了燃气发生器线性化传递函数模型；对自由容积、平衡压强等影响因素进行了分析；建立了锥形调节阀、驱动系统数学模型。 然后根据数学模型利用MATLAB/Simulink仿真软件建立仿真模型，分别设计了开环和反馈控制器. 最后对已有的实验系统进行了CFD仿真实验，并分析了喷管结构对流动的影响。 关键词 固体火箭冲压发动机，燃气流量调节，数学模型，控制方法，数值模拟 毕业论文设计说明书外文摘要 Title The design of Solid rocket ramjet congested Gas flow Gas flow adjustment device Abstract The gas regulation control for variable flow ducted rockets was investigated in this paper. Firstly, the principles of gas flow regulation has been investigation according to the principle of solid rocket motor. The main influence factors on gas flow adjusting character of gas generator were summarized. The influence of burning rate exponent and throat diameter on gas flow was analysed. The experimental system was establish including gas generator , electric needle-type valve, measurement and control system, the needle-type valve structure packing Seals as key part among them designed in detail. Secondly, the mathematical model of gas regulating system was established based on small perturbation theory. The minimum settling time was given subject to undershoot constraint. The mathematical model of electric needle-type valve and servo drive section was established. Then use a mathematical model based on MATLAB / Simulink simulation software to build simulation models were designed open-loop and feedback control. Finally, the available experimental system was CFD simulations, and analyze the impact on the flow of the nozzle structure. Keywords Ducted rocket, Gas regulation system, Mathematical Model, Control system，Numerical simulation 目次 1 绪论 1 1.1研究背景和意义 1 1.1.1燃气流量调节的背景 1 1.1.2 燃气流量调节的研究意义 1 1.2流量可调固体火箭发动机的研究现状 2 1.2.1固体火箭冲压发动机研究 2 1.2.2 燃气流量调节方案研究 3 1.3本文要研究的问题 5 2 流量调节原理和结构分析 6 2.1引言 6 2.2壅塞式燃气流量调节原理 6 2.2 .1壅塞式稳态调节原理 6 2.2.2 稳态调节特性分析 8 2.3燃气发生器结构分析 10 2.3.1 燃气发生器的设计 10 2.3.2锥形调节阀的设计 12 2.4 本章小结 14 3 流量调节系统建模与控制方法的研究 15 3.1 引言 15 3.2 燃气发生器数学模型 15 3.3 调节阀数学模型 17 3.4燃气流量调节控制方法分析 18 3.4.1 开环控制 18 3.4.2 反馈控制 22 3.5 本章小结 22 (责任编辑：qin) |