Matlab 多管火箭定向器振动控制动力学建模

摘要为了减小多管火箭在发射过程中定向器振动对火箭弹起始扰动的影响,考虑多管火箭的外界干扰,基于多体系统传递矩阵法建立了多管火箭炮动力学模型。分析了多管火箭炮的振动特性和在外界激励下的频率响应。以压电堆作为致动器，利用试探法设计状态反馈 PD控制参数，设计出多管火箭炮闭环主动振动控制系统，并基于 Matlab 对受控多管火箭炮振动响应进行仿真和分析。仿真结果表明，该方法可有效降低定向器的振动，并对外界激励具有移频的作用。该方法对抑制多管火箭发射系统振动、提高多管火箭射击精度具有理论指导意义。61058
毕业论文关键词多管火箭动力学建模多体系统传递矩阵法状态反馈PD 控制
Title Dynamic Modeling of Vibration Control for Launcher of Multiple Launch Rocket System
Abstract To reduce the influences of vibration of launch tube on initial disturbance of launching rocket in firing process of Multiple Launch Rocket System(MLRS),considering the external disturbance excitation,the dynamic model of MLRS based on transfer matrix method for multi-body systems is built.The vibration characteristics and dynamic response under the external disturbance excitation are analysed.By using heuristic method to design the parameters of state feedback PD control,the closed-loop and active vibration control system of MLRS is established,where piezoelectric stack is selected as actuator.The dynamic response of controlled MLRS launcher is simulated and analysed with Matlab.The simulation result shows that the method is valid for restraining the vibartion of MLRS launcher,and it is effective to remove the natural frequency of the system from exterior excitation.The paper offers a meaningful method in theory on reducing the vibration of launcher and improving the firing accuracy of MLRS.
Keywords Multiple Launch Rocket System Dynamic Modeling Transfer Matrix Method for Multi-body System State Feedback PD Control

1 绪论 ... 1

1.1 研究背景和意义 ... 1

1.2 研究现状及分析 ... 2

1.3 多体系统传递矩阵法简介 ... 4

1.4 本论文的主要内容 . 5

2 典型元件传递矩阵推导 ... 7

2.1 空间弹性铰的传递矩阵 . 7

2.2 空间振动集中质量的传递矩阵 ... 9

2.3 空间振动刚体的传递矩阵 .. 10

2.4 平面运动横向振动 Euler-Bernoulli梁的传递矩阵 15

2.5 本章小结 18

3 多管火箭固有振动特性研究 .. 19

3.1 多管火箭定向器无阻尼动力学模型 .. 19

3.2 多管火箭定向器固有振动特性仿真计算 .. 20

3.3 本章小结 26

4 多管火箭阻尼振动特性研究 .. 27

4.1 多管火箭定向器有阻尼无控动力学模型 .. 27

4.2 多管火箭阻尼振动特性仿真计算 27

4.3 本章小结 31

5 多管火箭强迫阻尼振动响应 .. 32

5.1 多管火箭强迫阻尼频率响应 32

5.2 多管火箭稳态响应仿真计算 34

5.3 多管火箭强迫阻尼时域内动力响应 .. 36 Matlab 多管火箭定向器振动控制动力学建模:http://www.751com.cn/zidonghua/lunwen_66664.html