摘要
以我国先进飞机需求牵引为背景,研究了主动重心控制系统方案和设计方法。首先,构建了一种飞机主动重心控制系统结构方案,用于协调纵向重心与气动焦点之间的关系;其次,基于平衡输油系统建立了重心位移模型,提出了最佳重心位置设计准则,在此基础上设计了基于干扰观测器补偿的主动重心控制器,并将其应用到某型飞机超声速巡航中。仿真结果表明,该主动重心控制系统合理地协调了飞机的纵向稳定性和操纵性,并有效地减小了巡航阻力,提高了巡航的效率和航程。
According to practical request of advanced aircraft, the architecture and methods of an active center of gravity control system are presented. Firstly, the architecture of the active center of gravity control system applied to advanced aircraft is established, which can coordinate center of gravity with aerodynamic center. Secondly, based on a fuel transfer system, the model of c. g. movement is established; then the formula of optimal c. g. is presented, and active center of gravity controller based on a disturbance observer is designed to control c.g. position effectively. The simulation results show that the active center of gravity control system can coordinate longitudinal stability with maneuverability well; while it is applied to supersonic cruise, cruise drag of the given aircraft is reduced, and then cruise efficiency and range is increased.
出处
《飞行力学》
CSCD
北大核心
2008年第6期68-72,共5页
Flight Dynamics
基金
航空科学基金资助项目(20060718001)
