基于高阶滑模微分器的增广比例导引律

Augmented Proportion Navigation Law Based on High Order Sliding Differentiator

导引律的设计在导弹制导与控制中具有重要作用,为了解决增广比例导引中导弹-目标视线角速度和视线角加速度不易获得的问题,设计了一种基于高阶滑模微分器的增广比例导引律。首先,根据高阶滑模微分器的数学模型建立视线角速度和视线角加速度的估计模型;其次,根据视线角速度和视线角加速度的估计值,利用一种光滑无抖阵滑模微分器构造增广比例导引律。最后,通过仿真验证表明,具有滑模微分器结构的增广比例导引律导引性能良好。

The design of guidance law plays an important role important role in the missile guidance and control,a new approach of constructing augmented proportion navigation(APN),based on high order sliding differentiator(HOSD),is designed to solve the problem that it is difficult to obtain the light of sight angle velocity and acceleration.First,estimation model of Light of sight angle velocity and acceleration are established in terms of mathematical model of high order sliding differentiator.Second,augmented proportion navigation(APN)using a terse fast HOSD without chattering is constructed according to the estimation value.Finally,simulation results show that APN with HOSD has good guidance performance.