多管火箭发射动力学建模与PID主动控制  

Launch dynamics modeling and PID active control of a multiple launch rocket system

作　　者：李波[1] 芮筱亭[2] 王国平[2] 张建书[2] 周秦渤 LI Bo;RUI Xiao-ting;WANG Guo-ping;ZHANG Jian-shu;ZHOU Qin-bo(College of Mechanical and Electrical Engincering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Institute of Launch Dynamics,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]南京理工大学发射动力学研究所,江苏南京210094

出　　处：《振动工程学报》2020年第6期1103-1111,共9页Journal of Vibration Engineering

基　　金：国防基础科研计划资助项目(JCKY2018605C002)。

摘　　要：多管火箭射击过程中,火箭弹碰撞和燃气流冲击力的作用会引起多管火箭俯仰角和回转角较大幅度的振动,这种大幅度振动会造成结构的疲劳,缩短使用寿命。更重要的是,如果振动衰减缓慢,俯仰机构和回转机构在每一发火箭弹射击时刻就会出现角偏差,从而引起较大的火箭弹散布。针对上述问题,建立了多管火箭弹炮一体化非线性动力学模型,在此基础上研究PID主动控制。接着,对多管火箭发射动力学控制进行数值仿真研究。无控与有控仿真结果表明,多管火箭动力学PID主动控制有效降低了射击过程中多管火箭的振动及射击偏差,提高了多管火箭射击密集度。During the shooting process of a multiple launch rocket system(MLRS),the collision of rockets and jet force cause a large amplitude vibration for the pitch and yaw angles.Such vibration may cause structural fatigue and reduce the service life.More importantly,if the vibration attenuation is slow,the pitch and yaw mechanisms have angular deviations at the time of each rocket’s launch,causing a significant rocket dispersion.To deal with the above problem,an integrated nonlinear dynamics model of the launcher coupled with rockets is established.Based on this complex model,PID active control is studied.Then,the numerical simulation of the launch dynamics control for the MLRS is carried out.The results of uncontrolled and controlled simulations show that this active PID control of the launch dynamics effectively reduces the vibration and shooting deviation of the MLRS during shooting,and improves the firing dispersion.

关 键 词：发射动力学 振动控制 PID控制 多管火箭 

分 类 号：O313[理学—一般力学与力学基础] TB53[理学—力学]