共查询到19条相似文献,搜索用时 125 毫秒
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在系统分析中,可控性是系统的一个重要特性.在工程实际操作中,往往需要对一个连续系统进行离散化处理,人们希望系统在离散化后能保留原系统的重要系统特征,比如可控性.对于线性系统,我们有成熟的判断方法.然而,对于非线性系统则无统一的判别方法.Elliott在2005年给出了一个二阶双线性系统经过离散化后,可控性发生变化的例子.它表明一个系统在离散化前后,它的可控性可能会发生改变.本文旨在给出一类二阶离散化双线性系统可控性充分条件,并和已有结果作比较,表明本文结果更具有一般性.另外,本文对于3阶及以上的这类系统可控性做出了不可控的判断. 相似文献
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针对我国目前近海渔业资源的过度捕捞状况,本文讨论过度捕捞渔业资源系统的可控性和最优捕捞问题。文中首先给出了从一个资源状态到另一个资源状态的可控性充要条件和最短到达时间,然后证明了最优捕捞策略的存在性和给出了最优捕捞策略的表达式。 相似文献
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讨论了扩展双线性系统的自适应控制问题。在比较弱的约束条件下,给出了最小方差控制方案、控制律及自适应控制算法。最后证明了闭环系统的稳定性. 相似文献
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双线性系统参数的集员辨识 总被引:3,自引:0,他引:3
本文讨论噪声功率有界时双线性系统参数的集员辨识。参数化后的双线性系统可用回归向量含非线性项的回归形式表示,文中给出了双线性系统参数的集员估计递推形式,并讨论了其收敛性。 相似文献
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We consider the problem of accessibility and controllability of certain bilinear systems. These evolve on Lie groups whose
Lie algebras are the normal real forms of complex simple Lie algebras. Previous results by other authors were obtained under
the assumption that the controlled vector field is strongly regular. Our paper is aimed at weakening this requirement, and
involves relating the root structure of elements in a Lie algebra as above to the nodal connection graphs obtained from their
standard matrix representations. This is in turn related to a standard irreducibility assumption on the uncontrolled vector
field. The abstract results on generation of Lie algebras are of some independent interest.
The work of this author was supported in part by a Fulbright grant, while she was visiting the Arizona State University, and
by the Centro de Matemática da Universidade de Coimbra/INIC.
The work of this author was partially supported by AFOSR Contract No. 85-0224A. 相似文献
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On Near‐controllability of Discrete‐time Upper‐triangular Bilinear Systems with Applications to Controllability 下载免费PDF全文
Lin Tie 《Asian journal of control》2014,16(5):1373-1386
Near‐controllability is defined for those systems that are uncontrollable but have a large controllable region. It is a property of nonlinear control systems introduced recently, and it has been demonstrated on two classes of discrete‐time bilinear systems. This paper studies near‐controllability of discrete‐time upper‐triangular bilinear systems, which are uncontrollable and are more general than the two classes mentioned. A necessary and sufficient condition for the systems in dimension two to be nearly controllable is presented, which covers the existing results. For the systems with high dimensions, necessary conditions and sufficient conditions of near‐controllability are provided, which generalize the existing results. In particular, the obtained near‐controllability results are applied to controllability of discrete‐time bilinear systems. An example also is given to demonstrate the effectiveness, which shows that the controllability problems of discrete‐time bilinear systems can be solved by near‐controllability. 相似文献
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本文首先给出了广义系统能控性与正常系统能控性的关系,并由此讨论了广义系统最优经济结构综合问题及能控性程度的度量形式.最后给出了工程算例. 相似文献
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本文着重讨论了广义分散控制系统的脉冲特性,主要包括无穷远固定模的性质、脉冲可控性与脉冲可观性。 相似文献