Fuzzy Adaptive Dynamic Surface Fault-Tolerant Control for Hypersonic Vehicles

被引：4
|
作者：
Hu C. [1 ]
Gao Z. [1 ]
Liu Y. [1 ]
Wang N. [2 ]
机构：
[1] Tianjin Key Laboratory of Process Measurement and Control, School of Electrical and Information Engineering, Tianjin University, Tianjin
[2] School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin
来源：
Hu, Chaofang (cfhu@tju.edu.cn) | 1600年 / Tianjin University卷 / 50期
关键词：
Dynamic surface; Fault-tolerant control; Hypersonic vehicle; Input saturation; Norm; Nussbaum gain;
D O I：
10.11784/tdxbz201603039
中图分类号：
学科分类号：
摘要：
For the hypersonic vehicles with input saturation and suffering from actuator damage fault and parameter uncertainty, a fuzzy adaptive dynamic surface fault-tolerant control strategy based on Nussbaum gain technique was proposed in this paper. For the altitude dynamics and velocity dynamics, the dynamic surface controller (DSC) and dynamic inversion controller were designed respectively. The hyperbolic tangent function was introduced to approximate the saturation function, and then the mean-value theory was used to affine transformation of inputs. To handle the unknown control gain resulting from damage fault and parameter uncertainty, the Nussbaum gain method was employed to ensure the stability of the control system and to overcome the possible singularity of the controllers. Additionally, the fuzzy adaptive strategy was adopted to approximate the unknown functions caused by uncertain parameters and saturation errors online. Moreover, the norm estimation method was utilized to decrease computation burden, where only one adaptive parameter was involved in each fuzzy system. The stability analysis verifies the semi-global uniformly ultimate boundedness of the closed-loop control system. The illustrative simulation demonstrates the effectiveness of the fault-tolerant control method. © 2017, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：491 / 499
页数：8
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