Fuzzy Quantized Control of Nonstrict Feedback Nonlinear Systems with Actuator Faults

Fuzzy Quantized Control of Nonstrict Feedback Nonlinear Systems with Actuator Faults
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具有执行器故障的非严格反馈非线性系统的模糊量化控制

DOI:
10.1007/s40815-020-00891-0
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发表时间:
2020-06
影响因子:
4.3
通讯作者:
Weihai Zhang
Weihai Zhang
中科院分区:
计算机科学3区
文献类型:
--
作者:
Hang Su;Weihai Zhang

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研究了一类具有量化输入和执行器故障的非严格反馈非线性系统的自适应跟踪控制问题。与现有的量化控制问题的工作相比,非对称滞后量化器被认为是在执行器故障问题的文章。为了解决量化效应所带来的控制挑战,提出了量化器的非线性分解,并将其应用于基于反推的控制方法的最后一步的控制器设计。结合模糊逻辑系统,对所研究的非线性系统中包含的未知非线性函数进行处理,而不需要知道某些不确定性的约束条件。所设计的控制器保证了系统输出收敛到期望参考信号的一个小邻域内,并且闭环系统的所有信号都是有界的。最后,仿真结果说明了所提出的控制算法的有效性。
This paper studies the adaptive tracking control problem for a class of nonstrict feedback nonlinear systems with quantized inputs and actuator faults. Compared with existing works on quantized control problem, the asymmetric hysteresis quantizer is considered in the actuator failure problem in this paper. To resolve the control challenge caused by the quantization effect, a nonlinear decomposition of the quantizer is proposed and applied to the controller design in the last step of the backstepping-based control approach. Combining with fuzzy logic systems, the unknown nonlinear functions contained in the researched nonlinear system is disposed without knowing some restrictive conditions of uncertainties. The developed controller guarantees that the system output converges to a small neighborhood of the desired reference signal and all the signals of the closed-loop system are bounded. Finally, simulation results are depicted to illustrate the efficiency of the proposed control algorithm.
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