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为了解决大型飞机高速巡航飞行中阵风减缓和乘坐品质控制问题,提出一种基于协方差配置的主动控制设计方法。该方法运用协方差配置、区域极点配置理论,以瞬时加速度级别出现概率直接度量乘坐品质,将期望乘坐品质下飞机的垂直阵风减缓控制问题转化为飞机纵向短周期运动区域极点和法向过载约束的满意控制问题,利用线性矩阵不等式技术进行约束指标下的凸优化,设计相应的相容控制策略。仿真结果表明:大型飞机在给定3 m/s阵风条件下巡航,其俯仰速率与过载响应均逐渐稳定,并满足期望极点与输出方差要求,同时,阵风产生的结构疲劳过载超出概率0.08,也在允许范围内,验证了该设计方法的可行性。
In order to solve the problem of gust mitigation and ride quality control in large-scale high-speed cruise flight, an active control design method based on covariance configuration is proposed. The method uses the covariance configuration and the regional pole placement theory to directly measure the ride quality with the instantaneous acceleration level probability and transforms the vertical gust mitigation control problem of the expected ride quality into the pole and normal overload restraint in the longitudinal short-period movement region of aircraft Satisfaction control problem, using linear matrix inequality technique to convex optimization under the constraint index, the corresponding design of compatible control strategy. The simulation results show that large aircraft cruising at a given wind speed of 3 m / s has a gradual steady-state pitch rate and overload response, meeting the desired pole and output variance requirements. At the same time, structural fatigue overload caused by gusts exceeds the probability of 0.08 Within the allowable range, the feasibility of this design method was verified.