基于变结构的反鱼雷鱼雷双滑模制导律

摘要

The state equation of line-of-sight angle between ATT and target's projections is deduced based on a mathematical model of moving relation between projections.Then a variable structure con-troller is designed to make invariable line-of-sight angle between projections for the purpose of hitting object torpedo precisely.The theoretical analysis and simulation results show that the proposed twin sliding mode controller can make the azimuth and elevation angle of line of sight invariable.Anti-torpedo torpedo hits target precisely and the guidance law has great robustness for model parameters measure error and objective′s maneuvering.%通过反鱼雷鱼雷(ATT)与目标鱼雷在两个平面内的投影的相对运动方程,推导了处于同一平面的两个投影的视线角变化状态方程,并分别采用变结构控制策略设计控制器,使得同一平面两个投影间的视线角保持恒定,达到 ATT精确命中目标的目的.理论推导和仿真结果表明:所设计的双滑模控制器能够保证 ATT与目标的视线方位角和视线高低角保持恒定,ATT精确命中目标,且对目标机动和参数测量误差具有强鲁棒性.