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Robust Adaptive Control with Control Structure Modification for Aircraft

机译:飞机控制结构的鲁棒自适应控制。

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Fast adaptation is commonly required in model reference adaptive control (MRAC) to handle uncertainties and achieve precise command tracking. High adaptive gain achieves fast adaption, and introduces high-frequency oscillation into the control signal. In this paper, we propose a robust compensator-based MRAC (R-MRAC) for an aircraft to tackle the problem of control signal high-frequency oscillation. First, the architecture of a standard MRAC with state augmentation is presented. Second, the control architecture is modified by introducing a robust compensator to guarantee transient performance of the closed-loop system. Finally, the proposed R-MRAC is applied to control the altitude of the aircraft with significant uncertainty in control effectiveness and aerodynamic coefficients. Numerical simulations results show that the proposed R-MRAC can effectively eliminate high-frequency oscillation. (c) 2019 American Society of Civil Engineers.
机译:模型参考自适应控制(MRAC)通常需要快速自适应,以处理不确定性并实现精确的命令跟踪。高自适应增益可实现快速自适应,并将高频振荡引入控制信号。在本文中,我们为飞机提出了一种基于补偿器的鲁棒MRAC(R-MRAC),以解决控制信号高频振荡的问题。首先,介绍了具有状态增强功能的标准MRAC的体系结构。其次,通过引入鲁棒的补偿器来修改控制体系结构,以确保闭环系统的瞬态性能。最后,所提出的R-MRAC被应用于控制飞机的高度,而控制效果和空气动力系数存在很大的不确定性。数值仿真结果表明,所提出的R-MRAC可以有效消除高频振荡。 (c)2019美国土木工程师学会。

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