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101.
Increasing the robustness to the unknown uncertainty and simultaneously enhancing the sensibility to the faults is one of the important issues considered in the fault detection development. Considering the L2-gain of residual system, this paper deals the observer-based fault detection problem. By using of H∞?control theory, an LMI approach to design fault detection observer is given. A numerical example is used to illustrate the effectiveness of the proposed approach. 相似文献
102.
CHUNG Kwok Wai 《中国科学:技术科学》2010,(3)
A new method,called perturbation-incremental scheme (PIS),is presented to investigate the periodic solution derived from Hopf bifurcation due to time delay in a system of first-order delayed differential equations.The method is summarized as three steps,namely linear analysis at critical value,perturbation and increment for continuation.The PIS can bypass and avoid the tedious calculation of the center manifold reduction (CMR) and normal form.Meanwhile,the PIS not only inherits the advantages of the method ... 相似文献
103.
Guo Jinji Zhan ShengDept. of Applied Mechanics Engineering Zhongshan University Guangzhou P.RChina 《系统工程与电子技术(英文版)》1992,(3)
This paper presents nonlinear ordinary differential equations (ODES) of the heavier pellets movement for two phase flow, which actually represent a system of equations. The usual methods of solution such as Runge -Kutta method and it's datum results are discussed. This paper solves ODES of general form using variable mesh-length, linearizing the nonlinear terms by finite analysis method, fuilding an iteration sequence, and amending the nonlinear terms by iteration . The conditions of convergent operation of iteration solution is checked. The movement orbit and velocity of the pellets are calculated. Analysis of research results and it's application examples are illustrated. 相似文献
104.
105.
SHI Peide ZHU Lixing Institute of Systems Science Academia Sinica Beijing China Institute of Applied Mathematics Academia Sinica Beijing China 《系统科学与复杂性》1993,(1)
To find out the interesting structure of high-dimensional data, a transforma-tion method based on the projection pursuit technique was proposed by Li in [1]: In thispaper, a convergence result. of the first direction of the projection index concerning inverseregression is obtained. 相似文献
106.
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109.
沈树民 《苏州大学学报(医学版)》1988,(4)
We consider the mixed finite element method of solving a fourth-order ellilotic variational inequality. The error estimate for the mixed finite element approximation is derived. 相似文献
110.
引入几种广义凸集概念,利用这些概念统一并推广了广义凸函数概念,指明了各种广义凸性之间的相互关系,给出了所得结果对于一定不等式系统的应用. 相似文献