用深度神经网络增强无人机机械臂控制,提升稳定性和抗干扰能力。
Adaptive RISE Control for Dual-Arm Unmanned Aerial Manipulator Systems with Deep Neural Networks
- 设计基于DNN的自适应RISE控制器,实时补偿系统不确定性。
- 理论证明跟踪误差渐近收敛,硬件实验验证了控制效果。
- 适合研究无人机机械臂控制与鲁棒控制的学者参考。
无人飞行器机械臂系统由多旋翼无人机和机械臂组成,受到广泛关注。然而,双臂操作时系统质心随机械臂运动变化,可能影响多旋翼无人机稳定性。此外,未建模动态、参数不确定性和外部扰动会显著降低控制性能,带来安全隐患。本文提出一种基于深度神经网络(DNN)的非线性自适应RISE(robust integral of the sign of the error)控制器。首先建立双臂空中机械臂的运动学与动力学模型;随后引入DNN前馈项,设计自适应RISE控制器,有效应对内外部挑战。通过李雅普诺夫方法严格证明了跟踪误差信号的渐近收敛性。本工作首次提出了基于DNN的自适应RISE控制器设计,并完成全面稳定性分析。为验证方法的实际性与鲁棒性,进行了多组真实硬件实验,结果表明该方法在复杂实际场景中表现优异,为双臂空中机械臂系统的性能优化提供了重要参考。
原文摘要 · Abstract (English)
The unmanned aerial manipulator system, consisting of a multirotor UAV (unmanned aerial vehicle) and a manipulator, has attracted considerable interest from researchers. Nevertheless, the operation of a dual-arm manipulator poses a dynamic challenge, as the CoM (center of mass) of the system changes with manipulator movement, potentially impacting the multirotor UAV. Additionally, unmodeled effects, parameter uncertainties, and external disturbances can significantly degrade control performance, leading to unforeseen dangers. To tackle these issues, this paper proposes a nonlinear adaptive RISE (robust integral of the sign of the error) controller based on DNN (deep neural network). The first step involves establishing the kinematic and dynamic model of the dual-arm aerial manipulator. Subsequently, the adaptive RISE controller is proposed with a DNN feedforward term to effectively address both internal and external challenges. By employing Lyapunov techniques, the asymptotic convergence of the tracking error signals are guaranteed rigorously. Notably, this paper marks a pioneering effort by presenting the first DNN-based adaptive RISE controller design accompanied by a comprehensive stability analysis. To validate the practicality and robustness of the proposed control approach, several groups of actual hardware experiments are conducted. The results confirm the efficacy of the developed methodology in handling real-world scenarios, thereby offering valuable insights into the performance of the dual-arm aerial manipulator system.
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