【作者】 周慧波； 宋申民； 宋俊红； 徐明跃；

【Author】 ZHOU Hui-bo1,2, SONG Shen-min1, SONG Jun-hong1, XU Ming-yue2 (1.Center for Control Theory and Guidance Technology, Harbin Institute of Technology, Harbin, 150001,China,2,School of Mathematical Sciences,Harbin normal University, Harbin,150009,china)

【机构】 哈尔滨工业大学控制理论与制导技术研究中心； 哈尔滨师范大学数学科学学院；

【摘要】 考虑平面内弹目相对运动的制导问题,针对影响制导性能的目标机动和弹体动态特性这两个主要因素,研究了导弹末制导律的设计问题。在制导律设计中直接考虑弹体一阶动态特性的影响,应用扩张状态观测器方法对导弹和目标相对距离的二阶导数、视线角速率的一阶导数、目标机动加速度的变化率进行实时快速估计。通过动态补偿线性化过程与有限时间稳定性理论相结合,设计了一种有限时间收敛的非线性导引律,从而实现导弹对目标的高精度打击。最后数值仿真验证了该导引律的有效性和可实现性。更多还原

【Abstract】 The guidance problem of relative motion of missile-target in the plane is considered, the design problem of the missile terminal guidance law is studied with respect to the two main affecting guidance performance factors associated with maneuver of target and dynamic characteristics of the missile. The first-order dynamic characteristic of the missile is dealt directly in designing guidance law. The extended state observer is applied to real-time rapid estimation of the second derivative of relative distance of missile and target, the first derivative of line-of-sight rate and the rate of acceleration of the target maneuvering. Both linearization of dynamic compensation and finite time stability theory are applied to design a nonlinear guidance law with finite time convergence, such that the missile hits the target accurately. Finally,the simulation results demonstrate the effectiveness and realizability of the guidance law.更多还原