基于新型指数趋近律的终端滑模导引律

Terminal Sliding Mode Guidance Law Based on the Novel Exponent Reaching Law

为使得终端滑模导引律的收敛效果和制导精度更高,文中提出一种新型的自适应变指数趋近律用来设计滑模控制律,并针对滑模控制律中各个参数对弹道的影响做了分析。仿真结果表明:在文中设计的新型自适应变指数趋近律下,系统在趋近滑模面过程中能有效削弱抖振,在逼近滑模面时能消除抖振;通过大量试验得到了最优制导参数,此最优参数下的制导律比传统滑模控制导引律的制导精度更高。

In order to make the terminal sliding mode guidance law have better convergence effect and guidance precision,an adaptive variable index reaching law had been designed,and the influence of the parameters of sliding mode control law on ballistic was analyzed.The simulation results indicate that the system can effectively weaken the chattering in the process of reaching the sliding surface,and can eliminate chattering when approaching the sliding surface under the new adaptive exponential reaching law designed in this paper.The optimal parameter was attained through a lot of experiments,and the guidance precision of the guidance law of this optimal parameter is higher than that of the traditional sliding mode control guidance law.