摘要
通过分析激光末制导炮弹比例导引制导律几何关系和原理,研究了激光末制导炮弹的工作原理,建立了含非线性进动的激光陀螺式导引头动力学模型和线性化弹体模型的末制导炮弹比例导引回路模型。根据制导控制系统是否利用导引头非线性进动信号作为制导信号,建立了两种制导控制系统数学模型,采用不同的制导时间以及弹体参数,进行了末制导炮弹比例导引回路仿真,对比分析了两种制导控制系统的性能。最后,针对非线性系统易引起弹体姿态较大摆动的问题,提出了在制导时间有限时的基于衰减系数的激光末制导炮弹改进制导方案。
By analyzing the proportional navigation guidance plane geometry and principle of the terminal laser-guided projectile,the working principle of terminal laser-guided projectile were studied. Then the loop model of terminal laser-guided projectile proportional navigation law including a nonlinear- procession laser-gyro stabilized dynamic seeker and a linear airframe was established. Especially, focusing on whether guidance and control system used the seeker＇s nonlinear procession signal as the guidance command, two kinds of system models were derived. The performance analysis and comparison of the two guidance and control system models was accomplished through the simulation of terminal laser-guided projectile proportional navigation loop with different guidance time and body parameters. At last, focusing on the problem that the body attitude may sway largely by using the nonlinear procession, an improved guidance scheme adding an attenuation coefficient for terminal laser-guided projectile guidance and control system was presented for the case of limited guidance time.
出处
《红外与激光工程》
EI
CSCD
北大核心
2009年第2期250-255,共6页
Infrared and Laser Engineering
基金
国家部委基金资助项目(020501)
关键词
激光制导
比例导引律
制导控制系统
导引头
非线性进动
Laser guidance
Proportional navigation law
Guidance and control system
Seeker
Nonlinear procession
