大展弦比飞行器变形辅助高度控制策略

佘挽强; 刘燕斌; 陈柏屹

doi:10.13700/j.bh.1001-5965.2022.0612

大展弦比飞行器变形辅助高度控制策略

doi: 10.13700/j.bh.1001-5965.2022.0612

南京航空航天大学航天学院，南京 210016

基金项目: 国家自然科学基金(62103187)；江苏省基础研究计划(自然科学基金) (BK20200437)；中央高校基本科研业务费专项资金(NT2022025)

详细信息

通讯作者:
E-mail：chenboyi1989@nuaa.edu.cn

中图分类号: V249.1
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出版历程
- 收稿日期: 2022-07-12
- 录用日期: 2022-08-12
- 网络出版日期: 2022-12-28
- 整期出版日期: 2024-05-29

Altitude control strategy for high-aspect-ratio wings with active morphing

College of Astronautics，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Funds: National Natural Science Foundation of China (62103187); Natural Science Foundation of Jiangsu Province (BK20200437); The Fundamental Research Funds for the Central Universities (NT2022025)

More Information

Corresponding author: E-mail：chenboyi1989@nuaa.edu.cn

摘要

摘要:
针对变形飞行器结构/飞行耦合动力学的飞行控制问题，以大展弦比飞行器为研究对象开展了变形辅助高度控制策略研究。采用单元翼多体假设，构建了大展弦比飞行器二面角变形结构，建立了结构/飞行纵向耦合动力学模型，基于线性二次型(LQR)控制器设计方法设计了主动变形(AM)和被动变形(PM) 2种控制策略。其中，被动变形控制策略仅采用升降舵作为控制输入，结构二面角动态行为由耦合动力学驱动；主动变形控制策略以二面角铰链处的扭矩作为额外输入对高度跟踪进行协调控制。仿真分析了2种控制策略下的高度跟踪效果及状态变化，研究结果表明：采用主动变形控制策略可有效改善高度跟踪暂态过程的性能，降低姿态回路的阻尼特性，为未来先进变形飞行器的结构/飞行一体化控制提供研究基础。
- 大展弦比机翼 /
- 飞行动力学 /
- 高度控制 /
- 控制系统分析 /
- 变结构控制
Abstract:
This paper proposed a deformation-aided altitude control strategy for the high aspect ratio aircraft to address the flight control problem of the structure/flight coupling dynamics. Based on the assumption of element wings, the dihedral deformation of high aspect ratio aircraft are constructed, and the structure/flight longitudinal coupling dynamic model is established. Two control strategies are discussed: altitude control with active morphing (AM) and passive morphing (PM). The elevator is regarded as the only control input in PM strategy, whereas control inputs are extended as elevator and torque in AM strategy. An identical linear quadratic regulator control method is adopted in both control strategies. Simulation results show that the AM strategy can effectively improve the transient processes of altitude tracking and reduce damping in the attitude channel.
- high-aspect-ratio wings /
- flight dynamics /
- altitude control /
- control system analysis /
- variable structure control

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图 1 大展弦比变形飞行器对象示意图

Figure 1. Illustration of high-aspect-ratio morphing wing

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图 2 大展弦比变形飞行器高度跟踪控制系统结构

Figure 2. Block diagram of altitude tracking control system for high-aspect-ratio morphing wing

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图 3 主动/被动变形控制策略下飞行器轨迹和结构状态对比

Figure 3. Comparison of trajectories and structure states between AM and PM control strategies

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图 4 主动/被动变形控制策略下飞行器姿态状态对比

Figure 4. Comparison of attitude states between AM and PM control strategies

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图 5 主动/被动变形控制策略下飞行器控制量变化对比

Figure 5. Comparison of control inputs between AM and PM control strategies

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图 6 主动/被动变形控制策略下高度跟踪侧视图对比

Figure 6. Comparison of side view between AM and PM control strategies

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图 7 主动/被动变形控制策略下高度跟踪前视图对比

Figure 7. Comparison of front view between AM and PM control strategies

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图 8 飞行器主轴的转动惯量随变形程度的变化

Figure 8. Variation of principal moments of inertia with degree of deformation

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