基于新型扩张观测器的导弹滑模制导律

Missile Sliding Mode Guidance Law Based on Extended State Observer

针对已有滑模制导律未考虑系统量测噪声的问题,提出了基于新型扩张状态观测器的导弹滑模制导律。该方法通过新型扩张状态观测器观测目标加速度并实时补偿滑模制导律,使导弹拦截机动目标时脱靶量更小,提高了拦截性能。仿真结果表明,基于新型扩张状态观测器设计的滑模制导律相较于传统的滑模制导律鲁棒性更强,具有工程实用性,也验证了新型扩张状态观测器的有效性。

Aiming at the problem that the original sliding mode guidance law does not consider the problem of system measurement noise,a missile sliding mode guidance law based on the new extended state observer(NESO)was put forward.This method estimated target acceleration according NESO and dynamically compensated guidance law online,which made missing distance smaller when intercepting maneuvering target and improved interception performance.The simulation results showed that compared with the traditional sliding mode guidance law,the missile sliding mode guidance law based on NESO has advantage in robust under a maneuvering target and engineering practicability.Moreover,the simulation results confirmed the effectiveness of NESO in practice.