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回收舰载机需要精确的终端路径和姿态控制,舰载机线性小扰动模型是这一阶段系统分析和控制器设计的必要工具,它需要足够准确地描述在主要操纵输入和进场路径大气紊流作用下舰载机的动态特性。首先使用代数线性化方法建立舰载机终端进场纵向运动的小扰动模型,仿真证明该模型能精确描述无风条件下进场舰载机对控制指令的响应,但通常的建模气流扰动影响的方法不能正确反映舰尾大气紊流对舰载机进场速度的干扰。针对该问题,重点研究了垂向风引起的进场舰载机轨迹方向上的力瞬变,提出了量化舰载机地速扰动的表达式以优化线性模型参数。最后,通过完成舰载机动力学模型在不同风场下的开环仿真以及在舰尾流场中的终端进场闭环仿真,验证了改进的线性模型的有效性,表明它适用于复杂流场下着舰控制系统的性能分析和设计。
The recovery of carrier-based aircraft requires precise terminal path and attitude control. The small linear perturbation model for carrier-based aircraft is an essential tool for system analysis and controller design at this stage. It needs to be accurate enough to describe the atmospheric turbulence in the main maneuvering inputs and approach paths Dynamic Characteristics of Shipborne Aircraft under Flow. The algebraic linearization method is used to establish a small perturbation model of longitudinal movement of aircraft terminal. The simulation results show that this model can precisely describe the response of aircraft to the control command under no wind conditions. However, Method can not correctly reflect the interference of airship turbulence on the approach speed of carrier aircraft. In order to solve this problem, the paper focuses on the force transients in the direction of the carrier-borne aircraft induced by the vertical wind and proposes an expression to quantify the disturbance of the carrier-borne aircraft speed in order to optimize the linear model parameters. Finally, the effectiveness of the improved linear model is verified by completing the open-loop simulation of carrier-based dynamics model in different wind fields and the terminal approach closed-loop simulation in aft flow field, which shows that it is suitable for complex flow field Performance Analysis and Design of Ship Control System.