摘要
考虑了带有多干扰的导弹系统的自动驾驶仪设计问题。结合滑模控制方法、自适应控制策略和非线性干扰观测器技术,给出了导弹系统的复合分层抗干扰控制自动驾驶仪。首先,根据外部干扰的特性不同,分别可以来把干扰建模为部分信息已知的谐波干扰和有界干扰。其次,设计了非线性干扰观测器估计了部分信息已知的谐波干扰,并分析了干扰估计误差系统的稳定性。再次,为了衰减和抑制有界干扰和干扰估计误差,利用滑模控制方法设计了反馈控制律,保证了闭环系统有良好的性能。然而,此策略需要知道有界干扰的上界。再次给出了一种自适应滑模控制方法,其中,有界干扰的上界通过自适应控制技术得到。最后,利用仿真验证了所提方法的有效性和优越性。
In this paper, the problem of autopilot design for missile systems with multiple disturbances is considered. Combining the sliding mode control method, adaptive control scheme, and nonlinear disturbance observer technique, a composite hierarchical anti-disturbance control （CHADC） autopilot is presented. First, according to the different properties of external disturbances, the disturbances are modelled as harmonic disturbances with partial known information and bounded disturbances, respectively. Second, a nonlinear disturbance observer is designed to estimate harmonic disturbances, and the stability of the disturbance estimation error system is analyzed. Third, in order to attenuate and reject bounded disturbances and the disturbance estimation error, a sliding mode control scheme is employed to design feedback control law, which can guarantee the closed-loop system have good performance. However, the scheme needs the upper bounded of the bounded disturbances. Fourth, an adaptive sliding mode control method is given, where the upper bounded of disturbances is obtained by the adaptive control technique. Finally, the effectiveness and superiority of the proposed method is validated by simulation.
出处
《控制工程》
CSCD
北大核心
2017年第3期500-504,共5页
Control Engineering of China
基金
国家自然科学基金资助项目(61203064)
关键词
导弹系统
多干扰
干扰观测器
滑模控制
自适应控制
Missile system
multiple disturbance
disturbance observer
sliding mode control
adaptive control
