【摘要】 文章结合自适应控制、模型参考控制和动态逆控制理论提出了结构自适应模型逆非线性控制系统,设计了飞行控制器。通过李亚普诺夫稳定性定理推导了自适应规律,保证了闭环系统的稳定性。仿真表明该方法对模型参数不准确和外界干扰具有很好的自适应能力,能够满足飞机在过失速机动条件下的控制指令跟踪,且系统具有良好的控制性能及鲁棒性。更多还原

【Abstract】 Section 1 of the full paper not only briefs SAMI(structured adaptive model inversion) theory but also gives eqs.(8) through(16) as part of the results of our exploration;in particular,it also points out that an adaptive rule is derived using a Lyapunov function to ensure closed-loop stability.Section 2 designs the SAMI controller,whose control law is given as eq.(20),and presents its block diagram as shown in Fig 1.Section 3 does the simulation to verify the SAMI controller.The simulation results,given in Figs.2,show preliminarily that the nonlinear control system has very good performance and robustness and that the SAMI control law achieves a high-level performance under post-stall maneuver conditions and is capable of suppressing external disturbances and model parameter uncertainties.更多还原