共查询到20条相似文献,搜索用时 62 毫秒
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随机2-D FMⅡ模型的状态估计 总被引:1,自引:0,他引:1
研究了在随机作用下的多输入多输出线性时变2-D离散FMⅡ模型,利用斜割支线
和几何方法,求出了2-D随机FMⅡ模型的卡尔曼滤波与预测公式,并且给出了滤波与预测
误差的方差阵和协方差阵. 相似文献
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2-D Roesser模型的静态干扰解耦 总被引:2,自引:1,他引:1
本文讨论了2-D Roesser模型[1](RM)的静态干扰解耦问题[2](简称为2-D DDP),即
寻求2-D状态反馈使相应的闭环系统具有抗干扰的能力,得到了问题有解的充分条件和计算
相应反馈阵的算法. 相似文献
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在影像的医学诊断中,为了从图像中挖掘出尽可能多的决策信息,需要有效的图像增强算法。在分析人眼视觉特性的基础上,针对小波不能“最优”表示含线、面奇异的二维图像的问题,提出了基于几何多尺度方向窗的图像增强算法。利用图像的几何特征,在小波域中划分出同质窗和结构方向窗。首先在同质窗内抑制噪声;然后计算出结构方向窗的几何方向,再沿窗方向作2-D 向1-D系数投影,进而对产生的1-D 信号做增强处理。实验结果表明,该方法在提高医学图像对比度、改善图像质量的同时有效地解决了传统算法中难以克服的噪声放大和清晰边缘过增强等问题,处理后的图像更利于医生进行分析诊断和医学影像的后续处理。 相似文献
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Duality of 2-D singular systems of Roesser models 总被引:1,自引:0,他引:1
In this paper, the properties and concepts of dual systems of the two-dimensional singular Roesser models (2-D SRM) are studied. Two different concepts of the dual systems are proposed for the 2-D SRM. One is derived from the duality defined for two-dimensional singular general models (2-D SGM)-called the S-dual systems; the other one is defined based on 2-D SRM in a traditional sense-called the T-dual systems. It is shown that if a 2-D SRM is jump-mode free or jump-mode reachable, then it can be equivalently transformed into a canonical form of a 2-D SRM, for which the T-duality and the S-duality are equivalent. This will be of some perspective applications in the robust control of 2-D SRM. 相似文献
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锅炉—汽轮机系统的逆系统控制方法 总被引:4,自引:0,他引:4
王东风 《自动化与仪器仪表》2001,(1):12-13,19
针对非线性锅炉-汽轮机系统各变量间所存在的严重非线性强耦合特征,提出了对其控制的逆系统解耦控制方法,仿真结果表明,采用逆系统控制方法设计的锅炉-汽轮机系统,可在全负荷范围内克服其非线性和严重耦合性,优于其它基于局部工作点所设计的Hx等控制方法。 相似文献
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针对广东培正学院实验实践教学的现状,提出应用型本科实验实践教学体系应由目标体系、内容体系、条件体系、管理体系及评价体系5个子体系构成,详细分析每个子体系的主要内容,形成广东培正学院涵盖基本技能训练、专业综合技能实训、独立实验(实训)和社会实践4大模块组成的应用型实验实践教学体系。 相似文献
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自组织系统是一类复杂系统,它通常驻留在开放的环境中,并且可以根据外部环境和内部状态的变化,通过系统成分之间的自主交互,对系统进行动态调整,从而更好地满足设计目标。近年来,随着计算机技术和Internet的不断发展,越来越多的计算机系统呈现出自组织的特征,有关自组织系统方面的研究变得非常活跃,受到学术界和工业界的广泛关注和重视。本文在深入分析自组织系统概念和特点的基础上,从理论模型、核心机制、关键技术、支撑平台四个方面对自组织系统的研究现状进行了综述和分析,介绍了其应用,讨论了自组织系统研究面临的问题和挑战,并展望了进一步研究方向。 相似文献
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Yoshiteru Ishida 《Artificial Life and Robotics》1998,2(1):1-7
A distributed and autonomous sensor network is proposed based on the informational features of the immune network: recognition
of nonself by distributed and dynamically interacting units, recognition by a simple comparison with the units themselves,
dynamic propagation of activation that would lead to system-level recognition, and memory embedded as stable equilibrium states
in the dynamic network. The network is explained by an illustrative example of an eight-coin puzzle: a balance must be used
only three times to identify one coin with a different weight from the other seven coins. Our network also uses a dynamic
structure network rather than the fixed structures used in neural networks. Simulations show that nonself (the different coin
in the eight-coin puzzle, the sensor/process fault in the monitoring example) will be identified by dynamically propagating
activation through the network.
This work was presented, in part, at the International Symposium on Artificial Life and Robotics, Oita, Japan, February 18–20,
1996 相似文献
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对中国股票市场的信息系统做了一个总体概括和介绍。将整个股票信息系统分解为券商信息系统、交易撮合系统、盘后结算系统以及行情分析和信息发布等四个系统,并详细阐述了各信息系统之间的关系,分别给出各个信息系统的基本设计原理和架构。 相似文献
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In this paper, a tracking system with space virtual feedback (SVF) is presented. The whole tracking system is closed by the space virtual feedback line that is the line of sight (LOS), but the parts in the system, such as the tracking subsystem and the servo subsystem, are in the state of open-loop. Because the SVF tracking model is used, the correcting loops can be removed in this system architecture. So the tracking speed and accuracy of the system are greatly improved. 相似文献
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YI LIN 《国际通用系统杂志》2013,42(3):239-249
In this paper, the concepts of the stability and uniform stability of input-output systems introduced in Ref. 1 are generalized to the model of general systems. Several equivalent conditions are given. The relation between the concepts and that of continuity of mappings from a topological space into a general topological space is studied. In the last section, some mapping properties of stable systems and uniformly stable systems are studied. Some open questions are posed. 相似文献
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本方案根据培训中心的实际需求,进行安全技术防范系统的设计。本系统包括视频监控及防盗报警两个子系统,两个子系统采用一台多媒体管理主机进行控制。视频监控采用电视墙进行图像矩阵切换,采用硬盘录像。系统可进行报警联动切换图像、报警联动录像、报警电子地图显示等功能。 相似文献