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一类非线性时滞系统的H_∞鲁棒故障检测滤波器设计 总被引:2,自引:0,他引:2
研究一类受时变时滞影响的非线性不确定系统H∞鲁棒故障检测滤波器设计问题.首先采用基于观测器的故障检测滤波器作为残差产生器,将故障检测滤波器设计归结为H∞滤波问题;然后应用Lyapunov-Krasovskii方法,推导并证明了问题可解的依赖时滞的充分条件,通过求解线性矩阵不等式得到了观测器增益矩阵的解;最后通过算例验证了所提出方法的有效性. 相似文献
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不确定奇异时滞系统的鲁棒H∞故障诊断滤波器设计 总被引:2,自引:1,他引:1
研究一类受参数不确定性和干扰影响的奇异时滞系统鲁棒故障诊断滤波器设计问题. 把基于观测器的故障诊断滤波器作为残差产生器, 将故障诊断滤波器设计归结为H∞滤波问题, 使产生的残差信号即为故障的H∞估计, 给出了鲁棒H∞故障诊断滤波器存在的充分条件, 并利用锥面互补线性化迭代算法得到了故障诊断滤波器设计的线性矩阵不等式求解方法. 算例验证了算法的有效性. 相似文献
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一类不确定非线性离散时滞系统的鲁棒H∞滤波设计 总被引:5,自引:0,他引:5
考虑一类同时带有非线性动态和参数不确定性的离散时滞系统的鲁棒H∞滤波设计问题.假设参数不确定性具有线性分式形式,而非线性动态满足Lipschitz条件,给出滤波器使误差系统鲁棒渐近稳定且达到指定的干扰抑制水平.对参数已知情形,先建立广义有界实引理,然后给出H∞滤波器的存在条件,证明了H∞滤波器的存在性可归结为线性矩阵不等式的可解性,基于线性矩阵不等式给出了H∞滤波器的综合方法和步骤.对参数不确定性情形,通过引进标度参数,将不确定非线性离散时滞系统的鲁棒H∞滤波问题转化为确定系统的H∞滤波设计.最后给出仿真例子验证所得结果的有效性. 相似文献
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不确定时滞系统的基于Razumikhin定理的鲁棒H∞可靠控制 总被引:15,自引:0,他引:15
主要研究了一类状态时滞不确定线性系统的时滞依赖鲁棒H∞可靠控制问题.系统状
态矩阵和时滞状态矩阵中存在着范数有界的时变参数不确定性,故障执行器集合是执行器集合
的子集.采用Razumikhin定理,最终将问题归结为通过线性矩阵不等式(Linear Matrix Inequalities,LMIs)
的求解得到无记忆状态反馈鲁棒H∞可靠控制器综合设计方法. 相似文献
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存在多步测量数据包丢失的线性离散时变系统鲁棒H∞故障检测滤波器设计 总被引:1,自引:0,他引:1
研究了一类存在多步测量数据包丢失的线性离散时变系统故障检测滤波器(Fault detection filter, FDF)设计问题. 采用基于观测器的鲁棒H∞故障检测滤波器作为残差产生器,将故障检测滤波器的设计问题转化为一类随机时变系统的H∞滤波问题, 基于Riccati方程推导并证明了其存在的充分必要条件. 将滤波器参数矩阵求取转化为二次型优化问题, 通过求解Riccati方程, 得到滤波器参数矩阵的显式解. 算例验证了所提算法的有效性. 相似文献
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Li Chen Mai-Ying Zhong Ming-Yu Zhang 《International Journal of Control, Automation and Systems》2011,9(1):9-14
This paper deals with the problem of H
∞ fault detection for a kind of linear singular systems with time-varying delay. A generalized form of observer-based fault
detection filter (FDF) is first used as a residual generator. Then the design of H
∞-FDF is formulated in the framework of H
∞ filtering. By applying Lyapunov-Kravoskii function approach, delay-dependent conditions on the existence of the H
∞-FDF, which ensure asymptotic stability and a prescribed H
∞ performance level, are derived. With the aid of a cone complementarity linearization technique, an iterative algorithm is
proposed to calculate the parameter matrices of the H
∞-FDF in terms of linear matrix inequalities. A numerical example is given to illustrate the effectiveness of the proposed
algorithm. 相似文献
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Optimal fault detection for linear discrete time-varying systems 总被引:4,自引:0,他引:4
This paper deals with the problem of observer-based fault detection for linear discrete time-varying (LDTV) systems. A problem formulation is first proposed to address the optimization of the fault detection filter (FDF) design, which is expressed in terms of maximizing a finite horizon H∞/H∞ or H−/H∞ performance index. This formulation can be applied to FDF design of LDTV systems subject to l2-norm bounded unknown inputs or stochastic noise sequences. It is shown that a unified optimal solution to the FDF can be obtained by solving the discrete time Riccati equation and the optimal FDF is not unique. A numerical example is given to illustrate the proposed method. 相似文献
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研究具有多通道数据传输的飞行器网络控制系统故障检测滤波器(FDF)设计问题.考虑每个通道存在各自的网络时延,且丢包符合Markov随机过程.首先,将系统建模为转移概率部分已知的离散Markov跳变线性系统,并设计了基于观测器的故障检测滤波器,将故障检测问题转化为H∞滤波问题;然后,利用LMI工具给出了FDF的可解条件和求解方法;最后,通过某飞行器网络控制系统的数值仿真实验验证了所提出方法的有效性. 相似文献
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Lihua Xie Author Vitae Lilei Lu Author Vitae Author Vitae Huanshui Zhang Author Vitae 《Automatica》2004,40(5):873-880
This paper is concerned with the robust H2 and H∞ filtering problems for linear discrete-time systems with polytopic parameter uncertainty. We aim to derive a less-conservative design than existing linear matrix inequality (LMI) based sufficient conditions. It is shown that a more efficient evaluation of robust H2 or H∞ performance can be obtained by a matrix inequality condition which contains additional free parameters as compared to existing characterizations. When applying this new matrix inequality condition to the robust filter design, these parameters provide extra degrees of freedom in optimizing the guaranteed H2 or H∞ performance and lead to a less-conservative design. 相似文献
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针对输入受限的时变不确定非线性系统,提出一种H∞鲁棒模型预测控制策略。假设线性化系统矩阵一致有界,将非凸的无穷时域优化问题转化为带有单个线性矩阵不等式(LMI)约束的凸优化问题,降低控制量求解难度。结合滚动优化原理与H∞控制方法在线极小化性能指标,使得闭环系统满足控制性能和约束。在LMI框架下给出H∞NMPC的求解方法及其鲁棒稳定性充分条件。仿真实验对比验证了该策略的有效性。 相似文献
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Dan Ye 《Information Sciences》2011,181(9):1686-1699
This paper is concerned with the problem of robust H∞ filter design for a class of linear uncertain systems with time-varying delay. The uncertainty parameters are supposed to be time-varying, unknown, but bounded, which appear affinely in the matrices of the considered system model. Based on linear matrix inequality (LMI) method and switching laws, a new switching-type filter is designed to guarantee the asymptotic stability and H∞ performance level of the filtering error systems. The key feature is that the new proposed filter parameters are switching between certain fixed gains automatically via the designed switching law. It is shown that the new filter design method is less conservative than the traditional fixed gain filter design method. An example is given to illustrate the validity of the proposed design. 相似文献
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This paper is concerned with the problems of robust H∞ and H2 filtering for 2-dimensional (2-D) discrete-time linear systems described by a Fornasini-Marchesini second model with matrices that depend affinely on convex-bounded uncertain parameters. By a suitable transformation, the system is represented by an equivalent difference-algebraic representation. A parameter-dependent Lyapunov function approach is then proposed for the design of 2-D stationary discrete-time linear filters that ensure either a prescribed H∞ performance or H2 performance for all admissible uncertain parameters. The filter designs are given in terms of linear matrix inequalities. Numerical examples illustrate the effectiveness of the proposed filter design methods. 相似文献
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This paper investigates the robust H∞ control and non-fragile control problems for Takagi-Sugeno (T-S) fuzzy systems with linear fractional parametric uncertainties. The robust H∞ control problem is to design a state feedback controller such that the robust stability and a prescribed H∞ performance of the resulting closed-loop system is ensured. And the non-fragile H∞ control problem is to design a state feedback controller with parameter uncertainties. Based on the linear matrix inequality (LMI) approach, new sufficient conditions for the solvability of the two problems are obtained. It is shown that the desired state feedback fuzzy controller can be constructed by solving a set of LMIs. Numerical examples are also provided to demonstrate the effectiveness of the proposed design method. 相似文献
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本文研究线性离散马尔科夫跳跃系统的最优故障检测问题。通过设计基于观测器的故障检测滤波器作为残差产生器,将滤波器的设计问题归结为随机意义下H_/H或H/H性能指标优化问题。基于算子优化方法,通过解耦合Riccati方程得到上述问题的统一解。算例验证所提方法的有效性。 相似文献