SINS／GPS制导炸弹俯仰平面制导控制一体化设计

Integrated Guidance and Control for the Pitch Plane of a Guided Bomb with SINS/GPS

根据SINS/GPS制导炸弹动力学特性,首先推导了俯仰通道的制导控制一体化状态模型。然后在充分考虑制导和控制回路的不确定性基础上,利用terminal滑模控制方法,设计了制导控制一体化状态反馈控制律,所设计的控制器一方面保证制导炸弹满足打击精度和末端落角约束要求,另一方面保证控制回路的稳定性与鲁棒自适应性。采用模糊控制克服了变结构控制项引起的系统抖振。最后,分别进行了极端气动条件与取投放域边界值情况下的某型SINS/GPS制导炸弹六自由度飞行控制弹道仿真,仿真结果验证了此方法的有效性。

According to the kinetic characteristic of the guided bomb with SINS/GPS, the integrated guidance and control model of the pitch plane is formulated firstly. Then uncertainties are taken into consideration adequately, and the integrated guidance and control feedback law is designed based on a terminal sliding mode approach. It can not only ensure the accuracy of hitting a target and the reguirement of terminal angular constraint, but also ensure the stability and robust self-adapting of the control system. Finally, six-degree trajectory simulations of the flight control are carried out under the wicked aerodynamic conditions and the boundary of dropping area for a certain type of guided bomb with SINS/GPS. And simulation results confirm the effectiveness of the proposed method.