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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。
Consider the autopilot design problem of a multi-jamming missile system. Combined with the sliding mode control method, adaptive control strategy and nonlinear disturbance observer technology, the anti-jamming control autopilot of the missile system is given. First of all, according to the different characteristics of external interference, we can respectively model the interference as harmonic interference and bounded interference with partial information known. Secondly, the nonlinear disturbance observer is designed to estimate the known harmonic interference of some information, and the stability of the disturbance estimation error system is analyzed. Third, in order to attenuate and suppress the bounded interference and the disturbance estimation error, a feedback control law is designed by using the sliding mode control method to ensure the closed-loop system has good performance. However, this strategy needs to know the upper bound of the bounded disturbance. Again, an adaptive sliding mode control method is given, in which the upper bound of bounded disturbance is obtained by adaptive control technique. Finally, the simulation results verify the effectiveness and superiority of the proposed method.