共查询到20条相似文献,搜索用时 15 毫秒
1.
Jiuping Xu Zhigao Liao Juan J. Nieto 《Journal of Mathematical Analysis and Applications》2010,368(1):54-68
This paper investigates the first order linear fuzzy differential dynamical systems with fuzzy matrices. We use a complex number representation of the α-level sets of the fuzzy system, and obtain the solution by employing such representation. It is applicable to practical computations and has also some implications for the theory of fuzzy differential equations. We then present some properties of the 2-dimensional dynamical systems and their phase portraits. Some examples are considered to show the richness of the theory and we can clearly see that new behaviors appear. We finally present some conclusions and new directions for further research in the area of fuzzy dynamical systems. 相似文献
2.
求解一类模糊线性微分系统的结构元方法 总被引:1,自引:0,他引:1
基于模糊结构元方法,研究了由对称模糊结构元线性生成的一般模糊线性微分系统和双重的一般模糊线性微分系统,给出了模糊线性微分系统解存在的充要条件,得到了结构元线性生成的齐次、非齐次以及双重一般模糊线性微分系统求解方法。最后,给出了这类系统的实际应用。 相似文献
3.
The solutions of linear fuzzy stochastic differential systems 总被引:2,自引:0,他引:2
As a completion of previous work of Feng (Fuzzy Sets and Systems 115 (2000) 351) on the general theory of fuzzy stochastic differential systems, the solutions of linear fuzzy stochastic differential systems for general coefficient matrix are discussed. 相似文献
4.
P.E Kloeden 《Fuzzy Sets and Systems》1982,7(3):275-296
A fuzzy dynamical system on an underlying complete, locally compact metric state space X is defined axiomatically in terms of a fuzzy attainability set mapping on X. This definition includes as special cases crisp single and multivalued dynamical systems on X. It is shown that the support of such a fuzzy dynamical system on X is a crisp multivalued dynamical system on X, and that such a fuzzy dynamical system can be considered as a crisp dynamical system on a state space of nonempty compact fuzzy subsets of X. In addition fuzzy trajectories are defined, their existence established and various properties investigated. 相似文献
5.
6.
7.
Several identification problems in fuzzy systems are considered which are described by means of fuzzy relational equations. The determination of a family of fuzzy relations of the system is described in detail. 相似文献
8.
Fuzzy相似矩阵方程X2=X与最优模糊等价矩阵的存在性 总被引:7,自引:1,他引:6
在文[1]基础上,对Fuzzy 相似矩阵方程X2= X 的解的结构进行了进一步研究。首先提出了Fuzzy 等价标准型的概念,为解的表达提供了工具; 第二,指出了相应标准分解过程的参数系的唯一性; 第三,在群作用观点下和平移等价类的意义下,讨论了解的类数计算公式; 第四,给出了解的分类表达式; 最后,证明了“失真”最小的模糊等价阵,即Fuzzy 最优等价阵的存在性,为Fuzzy 聚类提供了理论依据 相似文献
9.
讨论在直觉模糊度量空间上的拓扑半群作用,引入诸如拓扑传递性,点传递性及点稠传递性等概念.考虑非敏感性与传递性,等度连续等动力学性质的相互关系. 相似文献
10.
F. L. Chernousko D. Ya. Rokityanskii 《Journal of Optimization Theory and Applications》2000,104(1):1-19
Linear dynamical systems described by finite-difference or ordinary differential equations are considered. The matrix of the system is uncertain or subject to disturbances, and only the bounds on admissible perturbations of the matrix are known. Outer ellipsoidal estimates of reachable sets of the system are obtained and equations describing the evolution of the approximating ellipsoids are derived. An example is presented. 相似文献
11.
研究一类模糊时滞系统的指数稳定和基于观测器的模糊控制问题.在系统状态未知的情况下,通过设计系统的模糊观测器利用矩阵不等式分析的方法给出了系统指数稳定条件和基于观测器的动态输出反馈控制器设计方案.仿真结果说明了所提方法的有效性. 相似文献
12.
针对一类状态不可测的模糊输入时滞系统,应用平行分布补偿算法(PDC),设计了模糊观测器,提出了基于模糊观测器的输出反馈控制方法,给出了保证模糊时滞系统渐近稳定的新的充分条件.应用广义Lyapunov函数和线性矩阵不等式方法,证明了模糊输入时滞系统的渐近稳定性,同时给出了控制和观测增益矩阵的分离设计算法.仿真结果进一步验证了所提出的方法和条件的有效性. 相似文献
13.
14.
The purpose of this work is to study fuzzy dynamical systems associated with deterministic systems. The Grobman-Hartman theorem states that, near hyperbolic equilibria, there exists a homeomorphism between the nonlinear system's trajectories and the linearized correspondent system's trajectories. That is, these systems are topologically equivalent. A theorem similar to Grobman-Hartman theorem to fuzzy flows is the main result in this article. For fuzzy flows obtained from each system it states that the nonlinear and the linearized are topologically equivalent. 相似文献
15.
A. L. Lapshin 《Ukrainian Mathematical Journal》1999,51(3):377-389
For dynamical systems which are described by systems of differential or difference equations dependent on a finite-valued
Markov process, we suggest a new form of equations for moments of their random solution. We derive equations for a correlation
matrix of random solutions.
Kiev Economic Institute, Kiev. Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 51, No. 3, pp. 338–348, March, 1999. 相似文献
16.
F.L. Chernous'ko 《Journal of Applied Mathematics and Mechanics》1996,60(6):921-931
Linear dynamical systems described by finite-difference or differential equations are considered. It is assumed that the matrix of the system is either completely known or is subject to uncontrollable perturbations, so that each element is known only to within a certain possible interval. Outer approximations, by means of ellipsoids, are constructed for the attainability sets of such systems. The equations of evolution of the approximating ellipsoids are obtained. An example is presented. 相似文献
17.
当模糊线性系统的系数矩阵奇异时, 分析了模糊线性系统的右端向量和系数矩阵的扰动对模糊线性系统解的计算造成的影响,用矩阵的谱范数给出了相对误差的界. 相似文献
18.
针对一类连续模糊定常时滞互联系统,提出了一种模糊分散控制器的控制方法,给出了新的时滞依赖稳定性条件.应用Lyapunov函数法,自由权重矩阵,及线性矩阵不等式(LMIs)方法证明了模糊分散控制系统稳定.仿真结果进一步验证了所提出模糊分散控制方法的有效性. 相似文献
19.
Fuzzy标准矩阵及Fuzzy强标准矩阵 总被引:2,自引:0,他引:2
本文在格L=[0,1]上定义了Fuzzy标准矩阵及Fuzzy强标准矩阵,得出了他们的一些基本性质。证明了Fuzzy标准矩阵是幂收敛阵;给出了Fuzzy强标准矩阵的判别条件及Fuzzy强标准矩阵是幂等的充要条件。最后对Fuzzy强标准矩阵的秩进行了讨论。 相似文献