飞机机翼颤振自适应抑制研究

Adaptive Flutter Suppression for Aircraft Wing

提出并研究基于内模控制原理与自适应滤波技术的时域前馈控制用于飞机机翼颤振的主动抑制 ,通过一带后缘附翼控制面的平直机翼的颤振自适应抑制仿真算例 ,证实所提出的方法的可行性与有效性 ,同时还仔细地分析了反馈控制信号类型、收敛因子、控制器的阶数以及脉冲响应函数 FIR模型的阶数等对控制效果的影响。仿真计算结果表明 ,本文提出的控制决策具有良好的鲁棒性。

The application of feedforward control in adaptive flutter suppression for an aircraft wing in time domain is presented and studied based on the internal mode principle and the adaptive filter technique. The feasibility and the effectiveness are verified by the simulation for adaptive flutter suppression of an unswept wing with an active trailing-edge flap. Meanwhile the influences of the type of feedback signals, the noise measurement in impulse response, the order of the controller and FIR model for impulse response, convergence factors, etc. on control effectiveness are analyzed. Result shows the better robustness of the control methodology.