具有不确定性的倾转旋翼机过渡模态模糊控制设计
Transition Mode Fuzzy Control Design of Tilt-Rotor Aircraft with Uncertainty
阎坤 1牛梦瑶 1陈超波 1沈海东2
作者信息
- 1. 西安工业大学电子信息工程学院,西安 710000
- 2. 南京航空航天大学自动化学院,南京 211106
- 折叠
摘要
针对存在未知不确定性的倾转旋翼机从直升机模态到固定翼模态的模型切换稳定性问题,提出了基于模型依赖平均驻留时间方法的模糊自适应切换控制策略.首先,建立了倾转旋翼机的纵向运动系统模型.其次,针对倾转旋翼机过渡过程存在的未知不确定性,采用模糊逻辑系统对其不确定项进行逼近;针对存在不确定性的倾转旋翼机平稳切换问题,提出了模糊自适应鲁棒飞行控制策略,并从理论分析层面严格证明了所提出控制器的有效性.最后,仿真结果表明所提出的控制方法能够有效地实现倾转旋翼机模态转换过程中的轨迹跟踪,提升了飞行器的操控性和稳定性.
Abstract
In order to guarantee the model switching stability of uncertain tilt-rotor aircraft from the helicopter mode to the fixed-wing mode,a fuzzy adaptive switching control strategy is proposed based on the model-dependent average residence dwell time method.Firstly,the longitudinal motion system model of tilt-rotor aircraft is established.Secondly,the fuzzy logic system is constructed to approximate and handle the unknown uncertainty in the mode transition process of tilt-rotor aircraft.The fuzzy adaptive robust flight control strategy is presented to ensure the smooth switching of tilt-rotor aircraft,and the effectiveness of the proposed controller is strictly proved via the theoretical analysis.Finally,the simulation results show that the proposed control method can effectively realize the trajectory tracking in the mode transition process of tilt-rotor aircraft,and improve the maneuverability and stability of the aircraft.
关键词
倾转旋翼机/模型依赖平均驻留时间/模糊逻辑系统/未知不确定性/模型参考自适应Key words
tilt-rotor aircraft/model dependent average dwell time/fuzzy logic system/unknown uncertainty/model reference adaptivity引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据