可重复使用飞行器再入控制系统设计

本文首先分析了可重复使用飞行器的控制结构,然后提出了一种智能变结构控制器,它可以使可重复使用飞行器控制系统克服现有方法的缺陷,无需大量的增益调节,而能自动适应非线性和强耦合的对象特性,并能适应大范围环境变化,减小对不同飞行条件下气动与结构参数的依赖性,自动补偿不确定因素和扰动的不利影响。最后通过simulink建模对控制系统进行了内外两回路协同仿真,验证了此控制系统能很好地跟踪输入,并且较好地解决了存在于变结构控制系统中抖振问题。

Control System Design for Reusable Launch Vehicle In Re-entry Mode

This paper firstly analyses the control structure of reusable launch vehicle(RLV),and then introduces an intelligent variable structure controller.The controller can overcome the drawbacks of the existing control system,and can adapt to the nonlinear,strong coupled plant characteristics and large-scaled changes of the environment without gain modulations.This controller also decreases the dependency of the aerodynamics and structure parameters in different flight conditions,and can compensate the effect of uncertainties and disturbances automatically.At last,MATLAB/simulink simulation proves that this controller can track the inputs accurately and decrease the chattering of the variable structure control system.