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目前大多数阵风减缓控制方法都是等到飞机到达风场之后才起作用,由此带来了时滞与舵面速率饱和等问题;为了解决这一问题,提出了一种基于风扰动预测的阵风减缓控制系统方案;首先,对风扰动预测技术进行了研究,利用二阶互补滤波器实现了一种基于激光测风雷达获取的阵风信息与其它渠道获取的阵风信息的数据融合算法;其次,以某型民用飞机模型为对象,采用LQR方法设计最优状态调节器使得性能指标最小;接着,引入基于风扰动预测的前馈补偿,使得在未来阵风到达时飞机状态要尽可能保持不变;仿真结果表明,基于风扰动预测的阵风减缓最优控制系统能大幅度地减少阵风干扰对飞机法向过载和俯仰角速度的影响,证明了所设计的控制系统方案的正确性和有效性。
At present, most of the gust mitigation control methods are not effective until the aircraft reaches the wind field, resulting in the problems of saturation and saturation of the time delay and the rudder surface. In order to solve this problem, a wind gust forecast based on wind disturbance First, the wind disturbance prediction technology is studied. A second-order complementary filter is used to realize a data fusion algorithm based on gust information obtained by laser wind radar and gust information acquired by other channels. Secondly, A type of civil aircraft model as the object, using the LQR method to design the optimal state regulator makes the performance index minimum; Next, the introduction of wind disturbance predictive feedforward compensation, making the arrival of the gust in the future when the aircraft state as possible to maintain the same; Simulation The results show that the gust mitigation optimal control system based on wind disturbance prediction can greatly reduce the influence of gust disturbance on the aircraft normal overload and pitch angular velocity, and proves the correctness and effectiveness of the proposed control system.