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本文建立了航空制导炸弹纵向通道的数学模型,提出了一种分段复合制导控制律,并给出了各段的控制方程。鉴于分段复合制导控制的分段点不易寻找,以及控制律中的参数的不确定性,运用单纯形寻优算法对分段点和参数进行寻优,实现对航弹的自适应控制要求。仿真结果表明,所设计的分段制导方案能够满足弹丸着靶的大落角、小攻角、最低落速及CEP精度要求,且在不同的射程下用单纯形寻优算法均可以找到满足设计指标要求的参数,为航空制导炸弹的工程实现提供了技术支持。
In this paper, the mathematical model of the longitudinal channel of the air-guided bombs is established. A piecewise composite guidance control law is proposed and the governing equations of each section are given. In view of the difficulty of finding the subdivision point of the compound guidance control and the uncertainty of the parameters in the control law, the simplex optimization algorithm is used to optimize the subdivision points and parameters so as to realize the adaptive control requirements of the aircrafts. The simulation results show that the proposed scheme can meet the requirements of large drop angle, small angle of attack, minimum falling velocity and CEP accuracy of the projectile target. The simplex algorithm can meet the design requirements at different ranges. The parameters required by the indicator provide technical support for the engineering implementation of the air-borne bombs.