约束条件下导弹姿态跟踪保性能控制

Missile Attitude Tracking Guaranteed Cost Control under Input Constrain

针对BTT导弹在飞行过程中模型存在较大不确定性,并且控制舵的摆角受到物理装置约束的情况,研究了在约束条件下导弹姿态跟踪保性能控制的设计问题。首先在弹道的特征点处将导弹的非线性运动瞬时线性化,将导弹看作是一个不确定线性系统,提出应用基于线性矩阵不等式的跟踪保性能控制设计姿态控制器,然后推导得到满足控制约束的充分条件,以定理的形式给出了约束条件下跟踪保性能控制存在的充分条件。最后以某型导弹的姿态控制为例,设计了其姿态的跟踪保性能控制器。六自由度仿真结果表明了所得方法的有效性和可行性。

A new design approach of the robust tracking guaranteed cost controller under input constrain via linear matrix inequality is proposed. Firstly, the missile nonlinear model is linearized in several trim points, i.e. we obtain some linear models, and viewed as an uncertain system. Then the tracking guaranteed cost control under input constrain is proposed. Finally, the approach is applied to design the attitude controller for a specified bank-to-turn missile, And the simulation results demonstrate that the proposed design approach is effective and feasible.