The finite-time attitude tracking control for gliding-guided projectile with unmatched and matched disturbance is investigated. An adaptive variable observer is used to provide estimation for the unmeasured state which contains unmatched disturbance. Then, an improved adaptive twisting sliding mode algorithm is proposed to compensate for the matched disturbance dynamically with better transient quality. Finally, a proof of the finite-time convergence of the closed-loop system under the disturbance observer and the adaptive twisting sliding mode-based controller is derived using the Lyapunov technique. This attitude tracking control scheme does not require any information on the bounds of uncertainties. Simulation results demonstrate that the proposed method which is able to acquire the minimum possible values of the control gains guaranteeing the finite-time convergence performs well in chattering attenuation and tracking precision.

中文翻译：

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基于改进的自适应扭转滑模算法的滑翔弹丸姿态跟踪控制器设计

研究了具有无匹配和匹配干扰的滑行制导弹丸的有限时间姿态跟踪控制。自适应变量观测器用于提供包含不匹配干扰的未测量状态的估计。然后，提出了一种改进的自适应扭曲滑模算法，以较好的瞬态质量动态补偿匹配干扰。最后，利用李雅普诺夫（Lyapunov）技术推导了扰动观测器和基于自适应扭转滑模控制的闭环系统的有限时间收敛性的证明。这种姿态跟踪控制方案不需要关于不确定性范围的任何信息。