两种鲁棒设计方法RFN与OPNORM的比较研究

对两种控制系统的鲁棒设计方法，即反标架正规化（ＲＦＮ）法和正规矩阵参数优化（ＯＰＮＯＲＭ）法在鲁棒性及控制器的简单性等方面进行了比较，并通过一个具体实例加以说明。     

复映射z←zw+c(w=α+iβ)构造M集

映射ｆ１（ｚ）＝ｚ２＋ｃ在参数平面Ｃ及动力平面Ｚ上产生的分形图象使许多研究人员对复动力系统的迭代重新产生了浓厚的兴趣．学者们除了对ｆ１构造分形进行广泛讨论外，又对ｆ２（ｚ）＝ｚα＋ｃ（α∈Ｒ１）构造分形进行了深入的讨论．文中提出用复映射ｆ３（ｚ）＝ｚｗ＋ｃ（ｗ＝α＋ｉβ；α，β∈Ｒ１）构造分形，分析了该映射的基本数学特点，探讨了Ｃ平面上ｆ３Ｍ集的图象特征，以及吸附在Ｍ集边界上的吸引周期芽苞排列方式，提出复映射ｆ３广义Ｍ集的四个猜想     

MCS—51单片机控制的DTMF信号发送／接收电路

ＭＣＳ—５１单片机控制的ＤＴＭＦ信号发送／接收电路郑州大学廖天河，李亚平１ＳＲＭＦ发送电路双音多频信号ＤＴＭＦ的发送电路，在单片机８０３１的控制下，以ＭＶ５０８７为核心，外接标准晶振（３．５８ＭＨＺ）和用８中取２标准键盘构成的４Ｘ４键盘矩阵等组成，如...     

两分块K－循环Toeplitz矩阵相乘的快速算法

两分块Ｋ－循环Ｔｏｅｐｌｉｔｚ矩阵相乘的快速算法余品能（南京工程兵工程学院）ＡＦＡＳＴＡＬＧＯＲＩＴＨＭＦＯＲＣＯＭＰＵＴＩＮＧＴＨＥＰＲＯＤＵＣＴＳＯＦＢＬＯＣＫＫ－ＣＩＲＣＵＬＡＮＴＴＯＥＰＬＩＴＺＭＡＴＲＩＣＥＳ￥ＹｕＰｉｎｎｅｎｇ（Ｉｎｓｔｉ...     

结构动力响应计算的瞬时界面关连矩阵法

结构动力响应计算的瞬时界面关连矩阵法杜国君，彭天国（东北重型机械学院）ＴＲＡＮＳＩＥＮＴＢＯＵＮＤＡＲＹＳＵＲＦＡＣＥＲＥＬＥＶＡＮＴＭＡＴＲＩＸＭＥＴＨＯＤＦＯＲＣＡＬＣＵＬＡＴＩＮＧＤＹＮＡＭＩＣＲＥＳＰＯＮＳＥＯＦＳＴＲＵＣＴＵＲＥ￥ＤｕＧｕｏ...     

Communication控制在RMRS电力线远程集中抄表系统中的应用

本文从远程集中抄表系统（ＲＭＲＳ）的原理与应用背景出发，详细介绍了Ｍｉｃｒｏｓｏｆｔ Ｖｉｓｕａｌ ＦｏｘＰｒｏ（ＶＦＰ）中Ｃｏｍｍｕｎｉｃａｔｉｏｎ控制在实现串口通信协议过程中的应用，着重阐述了利用Ｃｏｍｍｕｎｉｃａｔｉｏｎ控制中的查询和中断方式，以及ＲＭＲＳ系统中发送数据、接收数据、监控三大主要功能模块的实现。     

实对称矩阵最大特征值极小化问题的一个BT型ε－次梯度算法

实对称矩阵最大特征值极小化问题的一个ＢＴ型ε－次梯度算法叶东毅（福州大学计算机科学系）ＡＢＴＴＹＰＥε－ＳＵＢＧＲＡＤＩＥＮＴＡＬＧＯＲＩＴＨＭＦＯＲＭＩＮＩＭＩＺＩＮＧＴＨＥＧＲＥＡＴＥＳＴＥＩＧＥＮＶＡＬＵＥＯＦＡＲＥＡＬＳＹＭＭＥＴＲＩＣＭＡＴ...     

边界元法中非对称满系数矩阵方程组的分块求解法

边界元法中非对称满系数矩阵方程组的分块求解法刘晓坤，王建军（西安石油学院）路民旭，张大鸣（西北工业大学）ＡＢＬＯＣＫＥＱＵＡＴＩＯＮＳＯＬＵＴＩＯＮＴＥＣＨＮＩＱＵＥＡＮＤＩＴＳＰＲＯＧＲＡＭＦＯＲＵＮＳＹＭＭＥＴＲＩＣＤＥＮＳＥＭＡＴＲＩＸＩＮＴＨ...     

日本下一代不载人空间实验研究———USERS

下下代不载人空间实验系统（ＵＳＥＲＳ）是由日本通产省、新能源和产业技术综合开发机构／（财团法人）不载人空间实验研究开发机构（ＵＳＥＦ）共同研制的空间环境应用系统,ＵＳＥＦＳ由两部分－返回舱（ＲＥＭ）和服务舱（ＳＥＭ）组成。ＲＥＭ上搭载超导材料制造实验用的电炉,实验给后返回地面;ＳＥＭ上载有向ＲＥＭ提供电能等资源的公用舱,完成超导材料制造后与ＲＥＭ分离留轨单独执行中低轨道公用舱仪器性能试验实验。     

任意长度GFT的W变换算法

任意长度ＧＦＴ的Ｗ变换算法付彬（湖南大学数学系）曾泳泓（国防科技大学七系）Ｗ－ＴＲＡＮＳＦＯＲＭＡＬＧＯＲＩＴＨＭＯＦＱＦＴＷＩＴＨＡＲＢＩＴＲＡＲＹＬＥＮＧＴＨ￥ＦｕＢｉｎ（ＨｕｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｃｈａｎｇｓｈａ，Ｈｕａｎａ）ＺｅｎｇＹｏ...     

网络控制系统的能控性和能观性

给出了网络控制系统的定义，并基于线性时不变系统的被控对象，建立了传感器为时钟驱动，控制器和作动器为事件驱动时长时滞网络控制系统的数学模型，对网络控制系统的均值能控、均方能控、均值能观及均方能观作了定义，得到了网络控制系统能控的充分或必要条件及能观的充要条件．     

Local observability and controllability of stirred tank reactors

This paper deals with the observability and controllability properties of the linearized tangent dynamic model of (bio)chemical processes in isothermal stirred tank reactors (STRs). It is shown that a necessary condition for the observability (controllability) of isothermal (bio)chemical processes is that the number of measured components (the number of control inputs) is larger than or equal to the number of process components minus the number of reactions involved in the process. This gives a simple test for detecting possible lack of observability and/or controllability of isothermal STRs.     

On the controllability and observability of discrete-time linear time-delay systems

This article studies the controllability and observability of discrete-time linear time-delay systems, so that the two properties can play a more fundamental role in system analysis before controller and observer design is engaged. Complete definitions of controllability and observability, which imply the stabilisability and detectability, respectively, and determine the feasibility of eigenvalue assignment, are proposed for systems with delays in both state variables and input/output signals. Necessary and sufficient criteria are developed to check the controllability and observability efficiently. The proofs are based on the equivalent expanded system, but the criteria only involve the delays and matrices of the same dimension as the original system. Finally, the duality between the suggested controllability and observability is presented.     

Controllability and observability for time‐varying switched impulsive controlled systems

This paper is concerned with the controllability and observability for linear time‐varying switched impulsive systems. First, some new results about the variation of parameters for time‐varying switched impulsive systems are derived. Then less conservative sufficient conditions and necessary conditions for state controllability and observability of such systems are established. And for such system without impulsive control input, sufficient and necessary conditions for controllability and observability are derived. Furthermore, corresponding criteria applied to time‐varying impulsive systems are also discussed and examples are presented to show the effectiveness of the proposed results. Copyright © 2009 John Wiley & Sons, Ltd.     

非线性控制系统的特性（Ⅰ）

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。     

感应电动机系统的能控性与能观测性分析

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。     

The Controllability,Observability, and Stability Analysis of a Class of Composite Systems with Fractional Degree Generalized Frequency Variables

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.      

Controllability and observability of 2D thermal flow in bulk storage facilities using sensitivity fields

To control and observe spatially distributed thermal flow systems, the controllable field and observable field around the actuator and sensor are of interest, respectively. For spatially distributed systems, the classical systems theoretical concepts of controllability and observability are, in general, difficult to apply. In this study, sensitivity fields were used to analyse the behaviour from input to state and from initial state to output. For the analysis of controllability and observability, a large-scale, bulk storage facility with coupled thermal flow of air and agro-products was used. Analysis of this system using the classical systems theory results in controllability and observability results that are dependent on the step size of the spatially discretised system. Due to matrix multiplications, inaccurate results are calculated if the step size is too small. Our findings indicate that input-state and initial-state output sensitivity fields provide sufficient information about the controllability and observability of large coupled spatially distributed systems, using finite-dimensional state space representation with small discretisation steps.     

广义控制系统的强能控性与强能观性

本文考虑正则广义控制系统的强能控性与强能观性,在不分解原系统的情况下,用原系统参数给出了一些新的判定条件。     

多变量线性定常连续系统与离散系统之间的几个可控可观性关系

Some results on linear system theory are reported. Based on these results, necessary and sufficient conditions for the controllability and observability of both continuous-time and its corresponding discrete-time multivariable linear time-invariant systems are presented.