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针对带攻击角度约束的自杀式无人机(Suicide Unmanned Aerial Vehicle,SUAV)对地攻击机动目标问题设计了一种三维末制导律。首先,考虑了SUAV的气动力、发动机推力及阵风的影响,建立了SUAV的三自由度质点模型,在此基础上建立了三维追逃数学模型;其次,基于Lyapunov稳定性定理推导了带有攻击角度约束的三维滑模变结构末制导律;最后,对所设计的导引律进行了仿真。仿真结果表明:带攻击角度约束的三维滑模变结构末制导律能满足攻击角度约束的要求,具有精度高、脱靶量小和抗干扰性强的优点,对自杀式无人机对地攻击末制导律问题的工程应用具有一定意义。
A Succinarial Unmanned Aerial Vehicle (SUAV) with attack angle constraint is designed to solve the maneuvering target problem of ground attack. Firstly, considering the influence of aerodynamic force, engine thrust and gust of SUAV, a three-degree-of-freedom particle model of SUAV was established. Based on this, a mathematical model of three-dimensional pursuit was established. Secondly, based on the Lyapunov stability theorem, Angle constrained three-dimensional sliding mode variable structure final guidance law; Finally, the designed guidance law was simulated. The simulation results show that the three-dimensional sliding mode variable structure terminal guidance law with attack angle constraint can meet the requirement of attack angle constraint, has the advantages of high precision, small miss distance and strong anti-interference. Guidance law of engineering application has a certain significance.