Purpose

The purpose of this paper is to solve the challenging problem of automatic carrier landing with the presence of environmental disturbances. Therefore, a global fast terminal sliding mode control (GFTSMC) method is proposed for automatic carrier landing system (ACLS) to achieve safe carrier landing control.

Design/methodology/approach

First, the framework of ACLS is established, which includes flight glide path model, guidance model, approach power compensation system and flight controller model. Subsequently, the carrier deck motion model and carrier air-wake model are presented to simulate the environmental disturbances. Then, the detailed design steps of GFTSMC are provided. The stability analysis of the controller is proved by Lyapunov theorems and LaSalle’s invariance principle. Furthermore, the arrival time analysis is carried out, which proves the controller has fixed time convergence ability.

Findings

The numerical simulations are conducted. The simulation results reveal that the proposed method can guarantee a finite convergence time and safe carrier landing under various conditions. And the superiority of the proposed method is further demonstrated by comparative simulations and Monte Carlo tests.

Originality/value

The GFTSMC method proposed in this paper can achieve precise and safe carrier landing with environmental disturbances, which has important referential significance to the improvement of ACLS controller designs.

中文翻译：

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环境干扰下自动着舰的全局快速终端滑模控制

目的

本文的目的是解决存在环境干扰的情况下航母自动着舰的挑战性问题。因此，针对自动着舰系统（ACLS）提出了一种全局快速终端滑模控制（GFTSMC）方法，以实现安全着舰控制。

设计/方法论/途径

首先建立了ACLS的框架，包括飞行滑翔道模型、制导模型、进近功率补偿系统和飞行控制器模型。随后，提出了航母甲板运动模型和航母空气尾流模型来模拟环境扰动。然后给出了GFTSMC的详细设计步骤。通过Lyapunov定理和LaSalle不变原理证明了控制器的稳定性分析。此外，还进行了到达时间分析，证明了控制器具有定时间收敛能力。

发现

进行了数值模拟。仿真结果表明，该方法能够保证有限的收敛时间和在各种条件下的安全着舰。并通过对比仿真和蒙特卡罗测试进一步证明了该方法的优越性。

原创性/价值

本文提出的GFTSMC方法可以在环境干扰的情况下实现航母精确安全着陆，对ACLS控制器设计的改进具有重要的参考意义。