基于模型参考的无抖振离散变结构导引律研究

A kind of non-buffet discrete variable structure guidance law based on mode reference

针对无人机加载数据链使得传统的模拟信号导引律无法直接应用的问题,提出了一种基于模型参考的无抖振离散变结构导引律。该算法利用变结构控制的鲁棒性来保证导引精度,在后方预警机对目标坐标的测量存在误差,或者目标机动等情况下也具有极强的抗干扰能力。并提出了一种无抖振离散变结构控制算法,克服了传统的离散变结构控制算法在进入滑模后出现的抖振现象。通过仿真实验证明提出的无抖振离散变结构控制导引规律能够满足无人机的战术指标要求。

As the traditional analog signal guidance law can not be used directly when dealing with the question of unmanned aerial vehicle （UAV） load data link, a kind of non buffet discrete variable structure guidance law based on mode reference is proposed. This arithmetic uses the robust of variable structure control to guarantee the guidance pre- cision, even if the coordinate of targets measured by on early warning aircraft has error, or the targets move with high flexibility, the guidance still has the strong anti-interference capability. And a kind of non-buffet discrete variable structure control algorithm is also proposed, which overcomes the buffeting phenomenon of the traditional discrete variable structure control algorithm that happens after getting in sliding mode. The simulation results show that the proposed discrete signal guidance law can meet the tactical UAV indicators.