飞机超机动状态动力学特征及对控制系统的挑战

超机动能力作为第四代战斗机的重要标志性特征,在近距空战中具有极其重要的作用.针对非线性非定常气动效应、强耦合和操纵器异构冗余等超机动状态飞机的基本动力学特征,分析了其非线性气动力/力矩、非定常迟滞效应、参数快时变、惯性耦合和推力矢量等因素给控制系统带来的挑战,总结了超机动飞机的非线性非定常气动力建模、飞行控制和控制分配的研究现状,给出了一种基于非线性补偿和气动力模型数据库的鲁棒解耦控制策略,为超机动飞行控制方法的工程应用提供了参考.

Dynamic characteristics and challenges for control system of super-maneuverable aircraft

Super-maneuverability is a critical feature of the fourth generation fighter, which plays an extremely important role in dogfight. The nonlinear unsteady aerodynamic effect, channel coupling and heterogeneous manipulator redundant which exist in the super-maneuver are analyzed. Challenges for control system brought by some special dynamic characteristics are deduced, such as nonlinear aerodynamic force and moment, unsteady hysteresis effect, fast time-varying parameters, inertial coupling and thrust vector. The research progress of the unsteady aerodynamic force, flight control and control allocation of super maneuver is summarized. Based on dynamic inversion methodology, a robust decoupling control strategy that adopted nonlinear compensation and aerodynamic model database is proposed, which could provide a reference for engineering applications of flight control for super-maneuverable aircraft.