摘要
将无人直升机不可测的旋翼动态视为准稳态构造线性转动动态的参数时变动态逆,引入相位补偿器解决前向通道相位滞后问题.针对动态逆方法对模型不确定性很敏感的问题,应用了H_∞鲁棒控制方法.加入H_2混合控制以改善控制性能,并加入区域稳定方法实现过渡态的控制指标.飞行试验验证了该方法的有效性.
The non-measurable rotor flapping motion of helicopter was regarded as a quasi-steady to structure dynamic nonlinear inversion of rotational model.A phase conpensator was employed to solve the phase lag problem of the forward channel.According to the sensitiveness of the model inversion to model uncertainty,an H∞robust control method was implemented.Then,an H2 performance index was mixed with the H∞ control to improve control performance.In addition,region stable control was introduced to realize the control index of transition state.The actual flight experiments have confirmed the effectiveness of this method.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2015年第11期1647-1654,共8页
Journal of Shanghai Jiaotong University
基金
国家青年科学基金(61004066)
中央高校基本科研业务费专项资金(2011FZA4031)资助项目
关键词
微小型无人直升机
非线性动态逆
线性参数时变
区域稳定
H∞鲁棒控制
H2控制
miniature unmanned helicopter(MUH)
dynamic nonlinear inversion(DNI)
linear parameter varying(LPV)
region stable(D-stable)
H∞robust control
H2control