摘要
发动机推力偏心的存在导致导弹弹道偏离期望值而产生一定的偏差。为了更好、更逼真地模拟导弹的运动过程,对推力偏心产生的扰动进行仿真就显得很有必要了。应用乘同余法生成的服从均匀分布的随机数列,以及以此为基础生成的服从正态分布的随机数列,来模拟扰动的随机性,取得了较好的效果。通过对有扰动和无扰动两种情况下的弹道仿真结果进行对比可以看出扰动力矩在初始阶段对弹道参数的影响是较大的,符合推力偏心扰动的实际情况。将仿真结果应用到飞行模拟器导弹攻击系统中,取得了较好的效果,对飞行模拟器导弹攻击系统的研制具有重要意义。
The engine thrust misalignment makes trajectory deviate from expectation. In order to simulate the movement process of the missile better and vividly, it is necessary to simulate the disturbances of thrust misalignment. The sequences which accorded with uniform distribution, and the sequences which accorded with normal distribution were applied to simulate the randomness of the disturbances, it had some better effects. By comparing the two results of the simulation of trajectory with interference and without interference, it can be seen that the thrust misalignment had a greater influence on the simulation of trajectory in the initial launching phase, which accorded with practices. And it had some better effects and was of great importance to the study of the missile attacking system of the flight simulator when the result of the simulation was applied.
出处
《计算机仿真》
CSCD
2008年第4期57-60,共4页
Computer Simulation
关键词
推力偏心
随机数列
弹道仿真
Fhrust misalignment
Random sequences
Simulation of trajectory
