具有攻击角约束的无抖振滑模导引律设计

为了提高拦截器弹头的杀伤力，带攻击角度约束的导引律一直是学术界研究的热点。因此，制导律的设计既要保证较小的脱靶量又要保证以相应的攻击角度打击目标，目前已有很多的控制方法应用在拦截器制导设计中，包括最优制导律，滑模制导律，PN制导律，等等。我们知道滑模控制方法对外界扰动和参数不确定性有较好的鲁棒性，但是滑模控制的抖振缺陷普遍存在于传统的线性滑模和终端滑模中。因此，本文提出了一种新的无抖振终端滑模控制方法用于制导律的设计中，该方法不仅对外界有界扰动有较好的鲁棒性，还有效的消除了抖振的产生。最后数字仿真验证了该方法的有效性。

Design of sliding mode guidance law with attack angle constraint

In order to improve the interceptor warhead lethality,with attack angle constraint guidance law has been hot spot of academic research.Therefore,the design of guidance law to ensure the smaller miss distance but also to ensure the corresponding angle of attack targets,at present has a lot of control method is applied in the interceptor design guidance,including optimal guidance law,sliding mode guidance law PN guidance law,and so on.We know that the sliding mode control method is robust to external disturbance and parameter uncertainties,but the chattering of the sliding mode control is generally found in the traditional linear sliding mode and terminal sliding mode. Therefore, this paper presents a new method for the design of the control law of the chattering free terminal sliding mode control method. The method not only has good robustness to the external bounded disturbance,but also effectively eliminates the chattering. Finally, digital simulation verifies the effectiveness of the proposed method.