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本文采用与线性系统理论相比较的方法,阐述非线性控制系统理论。文中通过一些例子来分析非线性控制系统在能控性,能观性,抗干扰性,解耦和稳定性等方面的特性,从而进一步说明非线性控制系统理论在提法,论述和结论上的特点。第一部分介绍非线性系统的能控性和能观性。 相似文献
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感应电动机系统的能控性与能观测性分析 总被引:7,自引:0,他引:7
分析了感应电动机系统的能控性与能观测性。结果表明系统是弱能控与弱能观的。而且,采用非线性状态反馈解耦控制和非线性坐标变换后的局部闭环解耦线性系统是能控与能观的。 相似文献
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在状态反馈控制的基础上 ,提出了状态比例积分反馈控制的概念 ,并证明了线性定常系统状态比例积分反馈控制系统的能控性、能观性和稳定性的充要条件 相似文献
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主要探讨周期性系统(包括连续和离散两种情形)的能控性问题,对文献中有关周期为To的连续周期性系统的能控性结论进行了完善,推导出系统能控等价于单周期(0,To)内能控的结论,并将这些结论直接推广到离散周期性系统;然后讨论了离散前后周期性系统能控性保持不变的可能性,证明在采用不等间距采样方式时,离散前后周期性系统的能控性保持不变。 相似文献
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在状态反馈控制的基础上,提出了状态比例积分反馈控制的理论,并证明了线性定常系统状态比例积分反馈控制系统的能控性、能观性和稳定性的充分条件。 相似文献
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This paper studies the structural controllability of a class of uncertain switched linear systems, where the parameters of subsystems’ state matrices are either unknown or zero. The structural controllability is a generalization of the traditional controllability concept for dynamical systems and purely based on the interconnection relation between the state variables and inputs through non-zero elements in the state matrices. In order to illustrate such a relationship, two kinds of graphic representations of switched linear systems are proposed, based on which graph theory-based necessary and sufficient characterizations of the structural controllability for switched linear systems are presented. Finally, the paper concludes with discussions on the results and future work. 相似文献
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研究了随机系统的能稳性和精确能控性的关系,象确定性情形一样,我们证明了在随机情形下,精确能控性蕴涵着的能稳性。 相似文献
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The Controllability,Observability, and Stability Analysis of a Class of Composite Systems with Fractional Degree Generalized Frequency Variables 下载免费PDF全文
This paper is concerned with fundamental properties of a class of composite systems with fractional degree generalized frequency variables, including controllability, observability and stability. Firstly, some necessary and sufficient conditions are given to guarantee controllability and observability of such composite systems. Then we prove that the stability problem of such composite systems can be reduced to judging whether a fractional degree polynomial is stable. Finally, the stability analysis result is applied in the supervisory control of fractional-order multi-agent systems, and an example is provided to illustrate the effectiveness of the proposed methods. 相似文献
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The existing results on controllability of multiagent systems (MASs) are mostly based on homogeneous nodes. This paper focuses on controllability of heterogeneous MASs, where the agents are modeled as two types. One type is that the agents have the same high‐order dynamics, and the interconnection topologies of the information flow in different orders are supposed to be different; the other type is that the agents have generic linear dynamics, and the dynamics are supposed to be heterogeneous. For the first type, the necessary and sufficient condition for controllability of heterogeneous‐topology system is derived via combination of Laplacian matrices. For the second type, the contribution also has two parts. The first part supposes that the agents have the same dimensional states and proves that controllability of this kind of MASs is equivalent to the controllability of each node and the whole interconnection topology, while the last parameter of the state feedback vector must not be 0. The second part supposes that the agents may have different dimensional states. For this kind of systems, the concept of β‐controllability is proposed. The necessary and sufficient condition for β‐controllability of heterogeneous‐dynamic systems is also derived and it is also proved that the feedback gain vectors have the effect to improve controllability. Different illustrative examples are provided to demonstrate the effectiveness of the theoretical results in this paper. 相似文献
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The controllability of probabilistic Boolean control networks(PBCNs)is first considered.Using the input-state incidence matrices of all models,we propose a reachability matrix to characterize the joint reachability.Then we prove that the joint reachability and the controllability of PBCNs are equivalent,which leads to a necessary and sufcient condition of the controllability.Then,the result of controllability is used to investigate the stability of probabilistic Boolean networks(PBNs)and the stabilization of PBCNs.A necessary and sufcient condition for the stability of PBNs is obtained first.By introducing the control-fixed point of Boolean control networks(BCNs),the stability condition has finally been developed into a necessary and sufcient condition of the stabilization of PBCNs.Both necessary and sufcient conditions for controllability and stabilizability are based on reachability matrix,which are easily computable.Hence the two necessary and sufcient conditions are straightforward verifiable.Numerical examples are provided from case to case to demonstrate the corresponding theoretical results. 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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The paper deals with a discontinuous control system that consists of two finite-dimensional linear systems; the first describes the motion in a given half-space, the second in the complementary half-space. Necessary and sufficient conditions for local controllability are obtained. 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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Dragan Nešić 《Mathematics of Control, Signals, and Systems (MCSS)》1999,12(3):270-294
Null controllability for a class of parallelly connected discrete-time polynomial systems is considered. We prove for this
class of systems that a necessary and sufficient condition for null controllability of the parallel connection is that all
its subsystems are null controllable. Consequently, the controllability test splits into a number of easy-to-check tests for
the subsystems. The test for complete controllability is also presented and it is subtly different from the null controllability
test. A similar statement is then given for complete controllability of a class of parallelly connected continuous-time polynomial
systems. The result is somewhat unexpected when compared with the classical linear systems result. We identify the phenomenon
which shows the difference between the linear and nonlinear cases.
Date received: January 22, 1997. Date revised: January 14, 1998. 相似文献