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为有效抑制二元机翼颤振现象,设计了一个指令滤波反推自适应约束控制器。考虑二元机翼气动弹性系统存在多项式结构非线性特性以及系统不确定的情况,针对二元机翼控制面偏转角度限制以及系统外部阵风扰动等问题,将前/后缘双控制面布局的二元机翼动态方程以状态空间形式描述,采用反推控制技术进行控制律整体设计,通过指令滤波环节对虚拟/实际控制信号进行幅值限制,并将滤波前后的信号差引入到自适应约束控制律设计过程中。仿真结果表明,在一定来流速度下,开环系统出现极限环颤振现象,闭环控制系统能快速达到稳定状态,二元机翼颤振现象得到有效抑制。
In order to effectively suppress the flutter of binary wings, an instruction filter and adaptive backstepping constrained controller is designed. Considering the nonlinearity of the polynomial structure and the uncertainty of the system in the aeroelastic system of binary wing, aiming at the limitation of the deflection angle of the binary wing control plane and the disturbance of gust outside the system, the two front / The dynamic equation of meta-wing is described in the form of state space. The control law is designed by using the backstepping control technique. The amplitude of the virtual / actual control signal is limited by the instruction filter and the signal difference before and after filtering is introduced into the adaptive constraint control Law design process. The simulation results show that the open-loop system appears limit-loop flutter at a certain flow rate, the closed-loop control system can quickly reach steady state, and the flutter of binary wings can be effectively suppressed.