广义不确定分布参数系统变结构控制

研究了一类广义不确定分布参数系统的综合问题,由广义不确定分布参数系统的特点,直接给出了变结构控制的设计方法。设计过程简单,控制易于实现,且给出了实例     

Lindblad型开放量子系统最优控制

对于伴随着松弛和耗散的Lindblad型开放量子系统,采用基于Liouville超算符变换的方法,将开放量子系统的动力学微分方程的矩阵表达形式转化成向量表达以简化微分方程的求解。以系统被控状态到达目标状态的期望值为性能指标,对变换后的开放量子系统进行最优控制律的设计,以达到状态转移的目的。在MATLAB环境下以2能级开放量子系统为例进行了系统仿真实验。对控制参数的变化对系统的布居数转移概率及其控制时间的影响进行了对比实验,并对实验结果进行了对比分析。

Abstract：

In order to solve the state of an open quantum system with relaxation and dissipation,the dynamical equation of the system in matrix was transformed into vector form in Liouville space. Taking the expectation value for the state under control reaching the target state as performance indicators,an optimal control function was derived for the system transformed. The control a 2-level open quantum system was simulated on in MATLAB. The influence to population transfer probability and control time caused by changing of parameters were analysed contrastively.     

Incoherent control of two classes of finite-level quantum systems

The incoherent control of finite-level quantum systems is investigated.Following a brief introduction to coherent control paradigms in quantum control,a control problem that can not be accomplished using only coherent control is presented.For such a control problem,it is proved that it can be accomplished using incoherent control based on projective measurement and coherent control for two classes of finite-level quantum systems,i.e.,eigenstate controllable quantum systems and wavefunction controllable quantum systems.     

The Theory and Evaluation Method of the Sustainable Development System About the Harmonious Growth of Population, Resource, Environment and Economy in the County District of China

The linchpin of strategy about the Sustainable Development (SD) in Chinese county enforcement area is to accomplish the basic transformation about the mode of economic development from extensive mode to intensive mode. For most counties of China, the overmany population is an element which influences the Sustainable Development. But to achieve the Sustainable Development based on the harmonious development of population, resource, economy and environment, the most important thing is how to carry on its management and evaluation method under the guide of the Tenth Five-Year Plan of national economy and the Perspective Target of 2010. Therefore ,this paper aims at reforming the traditional judging method focusing on output value-Income and establishing a systematic management method and evaluation index system about the sustainable development based on the harmonious growth of population,resource, economy and environment.     

基于虚拟仪器系统的热力站监控平台

介绍了小区热力站的虚拟仪器平台,运用Lab VIEW开发热力站实时监控系统,初步实现热力系统的自控和故障诊断中。     

论图书馆基层人才管理机制的建设

通过探讨图书馆基层新型人才管理机制的运行，以求改进图书馆人才管理2r-作，最大限度的发挥现有人才的优势，更好的满足社会经济发展对信忠咨询人才的要求。     

On the Difficulty of Measuring Forecasting Skill in Financial Markets

The use of correlation between forecasts and actual returns is commonplace in the literature, often used as a measurement of investors' skill. A prominent application of this is the concept of the information coefficient (IC). Not only can the IC be used as a tool to rate analysts and fund managers but it also represents an important parameter in the asset allocation and portfolio construction process. Nevertheless, a theoretical understanding of it has typically been limited to the partial equilibrium context where the investing activities of each agent have no effect on other market participants. In this paper we show that this can be an undesirable oversimplification and we demonstrate plausible circumstances in which conventional empirical measurements of IC can be highly misleading. We suggest that improved understanding of IC in a general equilibrium setting can lead to refined portfolio decision making ex ante and more informative analysis of performance ex post. Copyright © 2015 John Wiley & Sons, Ltd.     

Mobile Robot Control Based on Dynamic Potential

An efficient method is presented for implementing mobile robot perception-action behaviors, based on time-varying environment potential field approach. First, in this paper, the concept of dynamic potential U(x,y,z,t) is proposed for representing the environment of a mobile robot, and the form of U(x,y,z,t) is deduced, and then the velocity control of the vehicle with two wheel is directly calculated by transition function T of U(x,y,z,t). Finally, the perception-action layer is successfully implemented for avoiding collision, wandering, and integrating path planning and steering control on THMR-Ⅱ (TsingHua university Mobile Robot system). Based on sonar array signals, the experimental results are given to show that THMR-Ⅱ has better reflexive function, real-time obstacle avoidance, adaptablity and robustness for complex environments.     

一种基于CMAC网络的自学习控制器

通过分析了ＣＭＡＣ神经网络的学习机制和连续搅拌反应釜的结构,提出了一种自动选择学习率的ＣＭＡＣ自学习控制方法。给出了自学习控制器的结构和算法,并以连续搅拌反应釜模型为对象进行了仿真研究,这种网络每次学习少量参数,算法简单,仿真结果表明所提出的控制器优于传统的ＰＩＤ控制器。     

具有共轭复数重极点系统的一种状态转移矩阵

本文将求解无共轭复数重极点的模式系统（Ｍ，Ｂ，Ｃ）的状态转移矩阵推广到求解具有任意重共轭复数极点的一般情况，得出了用实数表示的求解公式和两个重要的拉氏变换式。为简便、迅速、准确，特别便于计算机求解这类状态方程创造了有利条件，具有明显的效果和普遍的实用价值。