基于MPL-CS自适应反步法的过失速机动控制  

MPL-CS Based Adaptive Backstepping Method for Post Stall Maneuver Control

作　　者：吕永玺 史静平[1] 屈晓波[1] Lyu Yongxi;Shi Jingping;Qu Xiaobo(Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《航空科学技术》2024年第2期106-111,共6页Aeronautical Science & Technology

基　　金：国家自然科学基金(62173277);航空科学基金(20180753006);陕西省自然科学基金(2023-JC-YB-526)。

摘　　要：超机动能力仍是未来飞机的重要性能指标,而过失速机动控制的效果将成为决定近距空战胜负的关键。本文提出了一种基于最小参数学习和布谷鸟搜索(MPL-CS)的自适应反步法的过失速机动控制方法,以解决先进布局飞机过失速机动中严重的非线性、耦合性和迟滞性等导致的鲁棒性差和控制精度低等问题。首先,基于一套完整的先进布局飞机缩比模型大振幅振荡风洞试验数据,在给定的建模精度目标下,通过改进极限学习机(ELM)方法,建立了大迎角下先进布局飞行器精确的非定常气动模型。其次,设计了一种基于MPL的自适应反步法,以减少需要优化的参数数量。在不确定性和模型扰动的影响下,结合串接链分配方法完成了分配设计。基于CS方法对MPL下自适应反步控制律的关键参数进行了优化。最后,经典的眼镜蛇机动仿真结果表明,该方法的控制精度高于传统的基于MPL的自适应反步方法,且充分考虑了工程的实际需求,控制精度高、鲁棒性强。该方法为未来先进布局飞机的过失速机动控制提供了理论支撑和技术路径。Super maneuverability remains an important performance indicator for future aircraft,and the effectiveness of post stall maneuver control will become the key to determining the outcome of close range air combat.In this paper,an adaptive backstepping control method based on minimum parameter learning and cuckoo bird search(MPL-CS)is proposed to solve the problem of poor robustness and low control accuracy caused by serious nonlinearity,coupling and hysteresis in post stall maneuver of advanced layout aircraft.Firstly,based on a complete set of large-scale oscillation wind tunnel test data of an advanced layout aircraft scaled model,an accurate unsteady aerodynamic model of the advanced layout aircraft at high angles of attack was established by improving the Extreme Learning Machine(ELM)method with given modeling accuracy goals.Secondly,an adaptive backstepping method based on MPL was designed to reduce the number of parameters that need to be optimized.Under the influence of uncertainty and model disturbance,the allocation design was completed by combining the daisy-chain allocation method.The key parameters of the adaptive backstepping control law under MPL were optimized based on the CS method.Finally,the classic Cobra maneuver simulation results show that the control accuracy of this method is higher than that of traditional adaptive backstepping methods based on MPL,and it fully considers the actual needs of engineering,with high control accuracy and strong robustness.The method proposed in this paper provides theoretical support and technical path for the post stall maneuver control of future advanced layout aircraft.

关 键 词：过失速机动 非定常气动力 布谷鸟搜索 最小参数学习 自适应反步控制 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]