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Nonlinear adaptive tracking control of non-minimum phase hypersonic flight vehicles with unknown input nonlinearity

机译:非最小相高超声速车辆的非线性自适应跟踪控制,具有未知输入非线性

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摘要

A nonlinear adaptive controller design method for output tracking of hypersonic flight vehicles (HFVs) subject to input nonlinearity is proposed in this paper. The parameters of the input nonlinearity are assumed to be unknown. This problem is challenging because of the complex nonlinearity of HFVs and the existence of the unknown input nonlinearity. The nonlinear model of HFVs is linearized, and the internal dynamics of this model are constructed. Since the internal dynamics of HFVs are non-minimum, an ideal internal dynamics (IID)-based control strategy is utilized and a states tracking model is constructed based on the computed IID. Then a nonlinear adaptive control strategy is designed to guarantee the bounded of output tracking error in the existence of unknown input nonlinearity. Comparison simulation results are provided to verify the available of the proposed method.
机译:本文提出了一种用于输出超声波飞行车辆(HFV)的输出跟踪的非线性自适应控制器设计方法。 假设输入非线性的参数是未知的。 由于HFV的复杂非线性和未知的输入非线性的存在性,这个问题是具有挑战性的。 HFV的非线性模型是线性化,构建该模型的内部动态。 由于HFV的内部动态是非最小的,因此利用了理想的内部动态(IID)控制策略,并且基于计算的IID构建状态跟踪模型。 然后,非线性自适应控制策略旨在保证输出跟踪误差在未知输入非线性的存在中的界限。 提供比较仿真结果以验证所提出的方法的可用。

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