基于多智能体的机电设备嵌入式控制系统设计方法

提出了一种利用多智能体（Multi—Agent Systems,MAS）方法学指导复杂机电设备嵌入式控制系统开发的方法．该方法利用智能体（Agent）概念处理复合型控制系统的多个子控制器;用MAS方法学指导构造Agent之间的通信及协调机制;利用多任务实时操作系统（Real—Time Operating System,RTOS）的多任务并行处理能力和系统服务在嵌入式系统中实现MAS系统,本方法已经应用于遥操作移动机器人嵌入式控制系统的开发．     

探究太阳能逆变器控制系统的RTOS软件开发

RTOS即实时操作系统,以嵌入式系统软件特点为切入点,进行的对太阳能逆变器控制系统的软件开发。该种软件开发需要遵循相关标准的流程规定,并且对系统的需求进行全面的分析,使其能够建立在TI-BIOS实时操作系统的基础上。经过实验证明,该种软件具有周期短、可靠性高、移植性强的特点,是太阳能逆变器控制系统的突破创新。本文以其需求作为出发点,将TI-BIOS系统平台作为基础,进行的对太阳能逆变器控制系统软件开发的分析。     

嵌入式实时操作系统的无功补偿控制器的研究

嵌入式实时多任务操作系统(ERTOS)具有实时性和嵌入式的特点、在分析ERTOS的组成和特点的基础上，采用VxWorks实时多任务操作系统，在MC68332单片机平台上，开发设计用于电容式电网动态无功补偿多任务控制器系统．该系统利用嵌入式实时操作系统对任务进行抢占式调度，提高了对电网无功补偿的实时性和可靠性．在嵌入系统中采用实时操作系统，可以减少系统开发的工作量，增强嵌入式应用软件的可移植性，使嵌入式系统的开发方法更具科学性，大大提高了系统的开发效率，改变以往嵌入式软件设计只能针对具体的应用从头做起的局限。     

基于ARM7的嵌入式操作系统μc/OS-Ⅱ平台的剖析与实现

嵌入式操作系统发展的运用,能够简化嵌入式系统的应用开发,有效地确保系统的稳定性、安全性和可靠性.因此嵌入式实时操作系统在目标处理器平台上的移植就成为嵌入式软件开发的基础,以此为背景,从算法实现和运行测试的角度出发,系统闹述了嵌入式操作系统μc/OSⅡ移植到S3C44BOX的芯片的移植过程和步骤.最终使嵌入式系统开发平台得以实现.     

基于多主体机制的车辆主动后轮转向与ESP集成控制

建立了基于多主体机制的车辆主动后轮转向(ARS)+ESP集成控制系统,搭建了松耦合协调控制框架以处理相对独立的ARS和ESP之间的合作和竞争,从而提高车辆的操纵稳定性能.采用单片微机和嵌入式实时操作系统,开发了该集成控制系统的控制器原型;基于Matlab/Simulink/dSPACE,搭建ARS+ESP集成控制系统的ECU硬件在环仿真平台.用此平台进行仿真试验,研究基于多主体机制的集成控制算法在极限工况下的性能.结果表明,与单独的ARS或ESP控制相比,该集成控制系统能更好地实现车辆状态跟踪和稳定操纵.     

μC/OSⅡ嵌入式实时操作系统及应用分析

嵌入式实时操作系统兼有嵌入式和实时性的特点.分析了μC/OS—Ⅱ嵌入式实时内核的公开源代码可移植性、可裁剪、可固化、稳定性与可靠性等特点.指出μC/OS—Ⅱ在嵌入式工业控制系统中很好的应用前景.     

一个嵌入式实时操作系统的设计

为了开发自主产权的嵌入式实时操作系统，结合uCLinux内存管理的特性和RTAI的实时特性，在总体架构、内存管理、进程管理、异常中断处理和定时器等主要模块上做了精心的设计，开发出了具有硬实时特性的嵌入式实时操作系统——ZDRTOS．     

S3C44B0X平台上嵌入式操作系统μC/OS-Ⅱ的移植

根据嵌入式处理器S3C44B0X和嵌入式实时操作系统μC/OS-Ⅱ的特点,通过实现三个源代码文件将μC/OS-Ⅱ移植到S3C44B0X上,并给出详细的移植测试方案,具有重要的实用参考价值。构成的嵌入式系统应用开发平台和专门设计的中断系统有机结合起来,可有效提高该系统的实时性和执行效率,简化嵌入式应用软件的开发流程。     

μc/os-Ⅱ在S3C44B0X上的移植

探讨了在嵌入式系统中如何应用嵌入式实时操作系统；以实时操作系统——μc／os-Ⅱ移植到三星S3C44B0X微处理器为例，提出并分析了实时操作系统移植到不同的微处理器平台下所需要处理的几个问题，重点讲述了针对各个问题的解决方案。     

基于S3C44B0X的双轴运动控制系统的实现

论述了基于嵌入式实时操作系统μC/OS-Ⅱ和嵌入式微处理器S3C44B0X设计的步进电机双轴运动控制系统.介绍了该运动控制系统的硬件结构和软件实现,并详细阐述了定时器中断的处理和位置处理.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-