摘要
面对称飞行器具有强耦合、弱阻尼的特点,为实现其横航向模态的高效控制,对控制策略效能及高效控制策略选择判据进行了研究.通过建立稳定轴系下横航向耦合动力学模型,得到了模态特征简化表达式;分析了有效的模态控制策略,并推导了各控制策略的效能公式;通过对各控制策略效能的对比分析得到了耦合特征下的高效模态控制策略选择判据;最后通过根轨迹分析、模态特性评估与6自由度仿真进行验证,结果表明理论公式与分析仿真结果一致.高效模态控制策略选择判据能够准确表征不同控制策略的效能关系,可用于指导强耦合面对称飞行器横航向模态控制方案设计.
In view of the characteristics of strong coupling and week damping,this paper studied the high efficiency lateral-directional modal control strategy of symmetrical aircrafts with coupling dynamics.The linear dynamic model in the stable axis system was derived and simplified expressions of the lateral-directional modal characteristics were obtained.The control strategies of improving the effective modal characteristics under the influence of coupling dynamics were proposed,and the control effectiveness expression of each strategy was derived.The criteria of high efficiency strategy selection were obtained through comparative analysis.Finally,the theoretical results were verified by root locus analysis,effectiveness evaluation of modal improvement strategy and 6-DOF simulation.The results show that the criteria proposed can accurately represent the efficiency relationship of different control strategies and can be used to guide the lateral-directional modal control scheme design of symmetrical aircrafts.
作者
丁嘉元
郑宏涛
邵干
唐鹏
DING Jia-yuan;ZHENG Hong-tao;SHAO Gan;TANG Peng(China Academy of Launch Vehicle Technology, Beijing 100076, China;School of Transportation Science and Engineering, Beihang University, Beijing 100191, China)
出处
《气体物理》
2021年第6期29-36,共8页
Physics of Gases
基金
国家重大基础研究项目(613722)。
关键词
耦合特征
横航向模态控制
控制效能
高效控制策略
选择判据
coupling dynamics
lateral-directional modal control
control effectiveness
high efficiency control strategy
criterions of strategy selection
