This paper investigates the design of an attitude autopilot for a dual-channel controlled spinning glideguided projectile(SGGP),addressing model uncertainties and external disturbances.Based on fixed-time stable theor...This paper investigates the design of an attitude autopilot for a dual-channel controlled spinning glideguided projectile(SGGP),addressing model uncertainties and external disturbances.Based on fixed-time stable theory,a disturbance observer with integral sliding mode and adaptive techniques is proposed to mitigate total disturbance effects,irrespective of initial conditions.By introducing an error integral signal,the dynamics of the SGGP are transformed into two separate second-order fully actuated systems.Subsequently,employing the high-order fully actuated approach and a parametric approach,the nonlinear dynamics of the SGGP are recast into a constant linear closed-loop system,ensuring that the projectile's attitude asymptotically tracks the given goal with the desired eigenstructure.Under the proposed composite control framework,the ultimately uniformly bounded stability of the closed-loop system is rigorously demonstrated via the Lyapunov method.Validation of the effectiveness of the proposed attitude autopilot design is provided through extensive numerical simulations.展开更多
为提高风力发电系统在风速随机变化、未知扰动输入的运行环境下的最大功率跟踪控制性能,提出一种基于高阶滑模观测器(high order sliding mode observer,HOSMO)的自适应超扭曲滑模控制策略.为增强风机系统的动态跟踪性能,设计超扭曲滑...为提高风力发电系统在风速随机变化、未知扰动输入的运行环境下的最大功率跟踪控制性能,提出一种基于高阶滑模观测器(high order sliding mode observer,HOSMO)的自适应超扭曲滑模控制策略.为增强风机系统的动态跟踪性能,设计超扭曲滑模控制器.为验证并提高该方法的控制性能,对超扭曲滑模控制器中的未知参数和系统的不确定性设计自适应控制律,更好地抑制了超扭曲控制器的抖振,增强了对模型参数和外部扰动不确定性的鲁棒性.同时针对风机系统动态模型中部分状态变量难以准确测量的问题,设计了HOSMO对其实时估计,该方法对高频噪声有很好的抑制作用.将提出的控制方法与一阶滑模控制以及传统比例积分控制进行对比分析,证明了所提策略的正确性和可行性.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.52272358 and 62103052)。
文摘This paper investigates the design of an attitude autopilot for a dual-channel controlled spinning glideguided projectile(SGGP),addressing model uncertainties and external disturbances.Based on fixed-time stable theory,a disturbance observer with integral sliding mode and adaptive techniques is proposed to mitigate total disturbance effects,irrespective of initial conditions.By introducing an error integral signal,the dynamics of the SGGP are transformed into two separate second-order fully actuated systems.Subsequently,employing the high-order fully actuated approach and a parametric approach,the nonlinear dynamics of the SGGP are recast into a constant linear closed-loop system,ensuring that the projectile's attitude asymptotically tracks the given goal with the desired eigenstructure.Under the proposed composite control framework,the ultimately uniformly bounded stability of the closed-loop system is rigorously demonstrated via the Lyapunov method.Validation of the effectiveness of the proposed attitude autopilot design is provided through extensive numerical simulations.
文摘为提高风力发电系统在风速随机变化、未知扰动输入的运行环境下的最大功率跟踪控制性能,提出一种基于高阶滑模观测器(high order sliding mode observer,HOSMO)的自适应超扭曲滑模控制策略.为增强风机系统的动态跟踪性能,设计超扭曲滑模控制器.为验证并提高该方法的控制性能,对超扭曲滑模控制器中的未知参数和系统的不确定性设计自适应控制律,更好地抑制了超扭曲控制器的抖振,增强了对模型参数和外部扰动不确定性的鲁棒性.同时针对风机系统动态模型中部分状态变量难以准确测量的问题,设计了HOSMO对其实时估计,该方法对高频噪声有很好的抑制作用.将提出的控制方法与一阶滑模控制以及传统比例积分控制进行对比分析,证明了所提策略的正确性和可行性.
