【摘要】 战机追踪导引性能的关键是其火控系统应具有高性能的导引律。本文采用基于非线性追踪动力学模型 ,视目标机动为不确定摄动 ,应用 H∞ 控制理论设计的导引律用于空战战机追踪 ,具有对机动逃逸目标追踪的鲁棒性 ,不用对目标的逃逸机动进行估计与测量便能有效截获机动目标。仿真研究表明 ,所设计的导引律可有效地用于战机追踪作常值与随机机动逃逸的目标 ,通过与应用广泛的比例导引性能比较 ,说明其在截获时间、能量消耗及鲁棒性方面具有优势 ,可为实际工程应用提供参考。更多还原

【Abstract】 The key for fighter aircraft to implement target pursuit and interception in an air dogfight is to design high performance guidance law for its fire control system. Based on nonlinear pursuit dynamic model and targe t maneuver being regarded as uncertain perturbation, a guidance law designed by application of H ∞theory is used in fighter aircraft pursuit durin g air combat, it has robust ability to pursuit arbitrarily maneuvering target, w hich try to make a evasion, without needs to measure and estimate the maneuver m agnitude of the target. Simulation shows the designed guidance law can be used f or the fighter aircraft to pursuit target and the target makes nonmaneuvering or maneuvering evasion. The performance comparison between the designed guidance l aw and proportional guidance law indicates the superiority of the designed one c oncerning the interception time and energy consumption as well as resistance to disturbance of noise. Therefore it can offer a reference for engineering applica tion.更多还原