基于自适应趋近律的三维最优滑模制导律设计

摘要

一般的最优滑模制导律控制只在滑模面上具有鲁棒性,忽略了趋近过程中的鲁棒性问题.借鉴三维最优变结构制导规律的研究方法,首先建立最优导引律下的理想运动模型和受干扰及参数摄动情况下的实际运动模型,而后定义状态误差矢量,并在此基础上设计滑模面和改进趋近律,控制误差矢量趋于稳定,从而减弱了抖振,减小了能量消耗,实现对目标的三维立体精确打击,满足实际战场的作战需求.%The ordinary sliding mode guidance law only has robustness on the slip form surface, but approach process robustness is neglected, based on the research technique studied in three-dimensional optimal variational structure guidance. Firstly, the ideal movement model under the optimal guiding law and the practical motion model disturbed by the perturbation of parameter are established, then the state error vector is defined. Based on this,the slip form surface is designed and the approach law is improved, thus the controlling error vector tends to be stable, the buffeting is weakened, and the energy consumption is reduced. Therefore, the three dimensional goal could be precisely attacked, and the actual battlefield requirements is satisfied.