• 论文 •

### 基于受限参变率的飞翼无人机舵面阵风减缓控制

1. 1. 西北工业大学 航空学院, 西安 710029;
2. 西北工业大学 无人系统技术研究院, 西安 710029;
3. 西北工业大学 无人机研究所, 西安 710029
• 收稿日期:2019-08-12 发布日期:2020-07-18
• 通讯作者: 白俊强 E-mail:junqiang@nwpu.edu.cn
• 作者简介:孙逸轩 男,硕士研究生。主要研究方向:飞行器设计。
白俊强 男,博士,教授,博士生导师。主要研究方向:飞行器气动优化设计、飞行器综合应用、计算流体力学。
刘金龙 男,硕士研究生。主要研究方向:飞行器设计。
孙智伟 男,博士研究生。主要研究方向:飞行器设计。

### Gust alleviation control for flying-wing UAV by control surface based on limited parameter variation rate

SUN Yixuan1, BAI Junqiang1,2, LIU Jinlong1, SUN Zhiwei3

1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710029, China;
2. Unmanned System Research Institute, Northwestern Polytechnical University, Xi'an 710029, China;
3. UAV Research Institute, Northwestern Polytechnical University, Xi'an 710029, China
• Received:2019-08-12 Published:2020-07-18

Abstract: The flying-wing UAV has problems such as low pitching inertia and weak longitudinal stability, and as a result, its gust alleviation characteristics are sensitive to the changes in flight parameters. Furthermore, the flying-wing UAV has multiple control surfaces, the control effects of different placements of control surfaces are generally various. Therefore, the Linear Parameter Varying (LPV) control law design considering parameter variation rate for gust alleviation of this kind of aircraft and the research on the effects of different control surface placements are of great significance. Combined with the parameter-dependent Lyapunov function method and the parameter-varying oblique projection reduction algorithm, an LPV gust alleviation controller considering both parameter variation rate and model reduction is constructed. Based on this method, the LPV gust alleviation controller is designed for the Mini-MUTT flying-wing UAV model, and the influence of different strategies of control surface placement on the control performance is studied. The result shows that the reduced-order model obtained by the parameter-varying oblique projection reduction algorithm can effectively represent the dynamic characteristics of the full-order model. The designed LPV controller can guarantee the effective alleviation of the gust in a wide speed range. In the strategy that single control surface is considered, the control effect of the outboard control surface is superior to that of the inboard one. In addition, the control effect of double control surfaces is better than that of the single one, but the energy of control input of double control surfaces is greater than that of the single one. As a result, the control effect and energy consumption should be considered comprehensively to determine the appropriate control strategy for specific problems in engineering application.