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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers >Missile longitudinal autopilot design using a generalized extended state observer-based mixed H_2/H_∞ control method
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Missile longitudinal autopilot design using a generalized extended state observer-based mixed H_2/H_∞ control method

机译：基于广义扩展状态观测器的混合H_2 /H_∞控制方法的导弹纵向自动驾驶仪设计

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摘要

This work presents a novel robust control design approach for missile longitudinal autopilot under multiple disturbances and uncertainties. The uncertainties and disturbances of the missile dynamics are treated as a lumped disturbance based on the concept of equivalent input disturbance. Then a generalized extended state observer is employed to estimate the system states and the equivalent input disturbance in an integrated manner. These estimates are used to construct the state-feedback controller as well as to attenuate the effect of the exogenous disturbances and endogenous uncertainties. The state-feedback controller is obtained by solving the linear matrix inequalities of mixed H2/H infinity control problem, which provides an impressive flexibility to tune the controller to compromise between H2 performance and H infinity performance. Closed-loop stability of the system under the presented controller-observer structure is also established. The proposed design tactfully circumvents the engineering implementation problems encountered by mixed H2/H infinity control, achieves strong robustness against disturbances and uncertainties, and does not involve any complicated nonlinear control methodologies. Numerical simulation results of nominal and perturbed performance comparisons with classic methods sufficiently demonstrate the feasibility and robustness of the proposed method.
机译：这项工作提出了一种新型的鲁棒控制设计方法，用于在多重干扰和不确定性条件下的导弹纵向自动驾驶仪。基于等效输入扰动的概念，将导弹动力学的不确定性和扰动视为集总扰动。然后，采用广义扩展状态观测器以集成的方式估计系统状态和等效输入干扰。这些估计值用于构造状态反馈控制器，并减弱外源性干扰和内源性不确定性的影响。通过解决混合H2 / H无穷大控制问题的线性矩阵不等式获得状态反馈控制器，这为调节控制器提供了令人印象深刻的灵活性，以在H2性能和H无穷大性能之间折衷。还建立了在提出的控制器-观察者结构下系统的闭环稳定性。拟议的设计巧妙地规避了混合H2 / H无穷大控制所遇到的工程实施问题，对干扰和不确定性具有很强的鲁棒性，并且不涉及任何复杂的非线性控制方法。与经典方法的名义和扰动性能比较的数值模拟结果充分证明了该方法的可行性和鲁棒性。

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