链式平滑切换变体飞行器LPV鲁棒跟踪控制

针对后掠角可变的变体飞行器,研究了一类变体飞行器的建模与控制问题。拟合气动参数与后掠角变化的关系,利用Jacobian线性化的方法得到线性变参数(LPV)模型。进一步建立一类平滑切换系统,同时引入切换序列受限的链式切换,推导了链式平滑切换系统在有限时间有界且具有鲁棒性能指标的充分条件。设计了一种平滑切换镇定控制器的求解算法,并给出控制增益的求解步骤。基于广义系统理论提出了保证变体飞行器姿态跟踪系统鲁棒稳定的充分条件,并通过算例验证所提方法有效性。

LPV robust tracking control for chain smooth switched morphing aircraft

Aimed at morphing aircraft with variable sweepback,this paper studies the issue of modeling and control for a class of morphing aircrafts.Fitting the relationship between aerodynamic parameters and sweepback,we developed linear parameter varying (LPV) model by Jacobian linearization approach.Then a smooth switching system approach with limited switching sequence,chain switching,is modeled,and the sufficient conditions are provided to ensure the finite-time boundedness and robust performance index of the chain smooth switched system.A solving algorithm of stabilizer for smooth switching controller is proposed,and the solving steps for gain control are presented.Based on the generalized system theory,the sufficient conditions for robust stability of the attitude tracking system are proposed.The numerical example simulation results are given to illustrate the validity of the devised approach.