基于滤波扩张观测器的有限时间收敛制导律  

Finite time convergent guidance law based on filtering extended state observer

作　　者：冯丹[1] 任宏滨[1] 简金蕾[1] 吉阳[1] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《飞行力学》2016年第3期62-66,共5页Flight Dynamics

摘　　要：为提高拦截机动目标的精度,基于滤波扩张状态观测器提出了一种考虑自动驾驶动态特性的有限时间收敛制导律。通过滤波扩张状态观测器对制导律中目标机动信息进行补偿,使导弹在拦截目标时具有更高的拦截精度。仿真结果表明,在目标机动情况下,设计的制导律能保证视线角速度在有限时间内收敛到零,拦截弹过载较小,具有较好的动态特性和鲁棒性。同时与普通的扩张观测器的估计结果相比,滤波扩张状态观测器对机动目标的跟踪效果较佳。Based on the technology of extended state observer with filter（ FESO）,a finite time convergent guidance law（ FENTSM） was derived to improve precision of intercept maneuvering target. This method could estimate target maneuvering acceleration according FESO and dynamically compensate guidance law which improved operating precision when intercepting maneuvering target. The simulation results indicate that this guidance law makes rate of LOS angle convergence in a finite time and has lower load on the interception missile,which has good dynamic performance and robustness. Meanwhile the simulation results verify that the FESO has better tracking effect compared with the usually ESO to maneuvering target.

关 键 词：终端滑模 有限时间收敛 扩张观测器 机动目标 

分 类 号：V448.13[航空宇航科学与技术—飞行器设计]