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Adaptive Fuzzy Finite-Time Fault-Tolerant Control for Uncertain Non-strict Feedback Nonlinear Systems

机译:不确定非严格反馈非线性系统的自适应模糊有限时间容错控制

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In this paper, the finite-time fault-tolerant control design problem is addressed for non-strict feedback nonlinear systems. The considered nonlinear systems contain bias fault and loss of effectiveness in actuator, which can be addressed by fault-tolerant control technique. The fuzzy logic systems (FLSs) are introduced to approximate the unknown nonlinear functions defined on a compact set. Meanwhile, the technique named adding a power integrator is used, which validly overcomes the problem of the system with power-exponentials. A finite-time fault-tolerant controller is constructed base on backstepping design technique and practical finite-time stability theory. Finally, validity is illustrated by the finite-time fault-tolerant control strategy and a simulation.
机译:本文针对非严格反馈非线性系统,解决了有限时间容错控制设计问题。所考虑的非线性系统包含偏置故障和执行器的有效性损失,这可以通过容错控制技术来解决。引入了模糊逻辑系统(FLS)来逼近在紧集上定义的未知非线性函数。同时,使用了一种称为加功率积分器的技术,有效地克服了功率指数系统的问题。基于反推设计技术和实用的有限时间稳定理论,构造了有限时间容错控制器。最后,通过有限时间容错控制策略和仿真来说明有效性。

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