首页|Design of integral sliding mode guidance law based on disturbance observer
Design of integral sliding mode guidance law based on disturbance observer
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NETL
NSTL
万方数据
维普
With the increasing precision of guidance,the impact of autopilot dynamic characteristics and target maneuvering abilities on precision guidance is becoming more and more sig-nificant.In order to reduce or even eliminate the autopilot dynamic operation and the target maneuvering influence,this paper suggests a guidance system model involving a novel inte-gral sliding mode guidance law(ISMGL).The method utilizes the dynamic characteristics and the impact angle,combined with a sliding mode surface scheme that includes the desired line-of-sight angle,line-of-sight angular rate,and second-order differen-tial of the angular line-of-sight.At the same time,the evaluation scenario considere the target maneuvering in the system as the external disturbance,and the non-homogeneous disturbance observer estimate the target maneuvering as a compensation of the guidance command.The proposed system's stability is proven based on the Lyapunov stability criterion.The simulations reveale that ISMGL effectively intercepted large maneuvering targets and present a smaller miss-distance compared with tra-ditional linear sliding mode guidance laws and trajectory shap-ing guidance laws.Furthermore,ISMGL has a more accurate impact angle and fast convergence speed.
NETL
NSTL
万方数据
维普
