Fuzzy-approximation-based prescribed performance control of air-breathing hypersonic vehicles with input constraints.
Fuzzy-approximation-based prescribed performance control of air-breathing hypersonic vehicles with input constraints.
复制标题
具有输入约束的吸气式高超声速飞行器基于模糊逼近的规定性能控制
DOI：
10.1177/0036850419877359
复制
发表时间：
2020-01
期刊：
影响因子：
2.1
通讯作者：
Kang, Xuchao
中科院分区：
文献类型：
--
作者：
Li, Xingge;Li, Gang;Zhao, Yan;Kang, Xuchao
本文针对吸气式高超声速飞行器纵向动力学模型，提出一种基于模糊逼近的带输入约束的规定性能控制方案。首先，本文提出了一种新颖的规定性能函数，该函数不依赖于初始跟踪误差的符号。并将规定的性能控制方法与反步控制相结合，该控制方案可以保证系统以规定的收敛速度、超调率和稳态误差收敛。为了解决反步控制方法需要多次微分的问题，采用模糊逼近器来估计未知函数，并采用范数估计方法来简化模糊逼近器的计算。针对吸气式高超声速飞行器子系统执行器输入饱和问题，设计了新型辅助系统，保证吸气式高超声速飞行器系统在输入约束下的稳定性和鲁棒性。最后通过仿真分析验证了所提出控制策略的有效性。
In this article, aiming at the longitudinal dynamics model of air-breathing hypersonic vehicles, a fuzzy-approximation-based prescribed performance control scheme with input constraints is proposed. First, this article presents a novel prescribed performance function, which does not depend on the sign of initial tracking error. And combining prescribed performance control method with backstepping control, the control scheme can ensure that system can converge at a prescribed rate of convergence, overshoot, and steady-state error. In order to solve the problem that backstepping control method needs to be differentiated multiple times, fuzzy approximators are used to estimate the unknown functions, and norm estimation approach is used to simplify the computation of fuzzy approximator. Aiming at the problem of input saturation of actuator in subsystem of air-breathing hypersonic vehicle, the new auxiliary system is designed to ensure the stability and robustness of air-breathing hypersonic vehicle system under input constraints. Finally, the effectiveness of the proposed control strategy is verified by simulation analysis.
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