模糊控制的现状与发展

文章简要介绍了模糊控制的概念和特点，并对模糊控制的原理作了说明，较详细的介绍了模糊控制的现状，包括模糊PID控制、自适应模糊控制、神经模糊控制、遗传算法优化的模糊控制、专家模糊控制等，还介绍了一些模糊控制的软硬件产品，对模糊控制系统的稳定性作了简单介绍，最后对模糊控制的发展作了展望。     

用TURBO PASCAL语言实现 FoxBASE的反编译

本文首先介绍了Fox反编译的必要性，然后介绍了Fox文件的结构和语句结构，最后介绍了Fox文件反编译的实现方法。用本文介绍的这种方法反编译Fox文件，操作简便、直观、速度快；并且反编译得到的程序可直接在Fox环境下运行。     

嵌入式实时操作系统的板级支撑包的开发方法

简单介绍了嵌入式实时操作系统的板级支撑包的开发，包括概念，开发方式，开发流程，测试方式的介绍。着重介绍了板级支撑包与普通应用软件的区别。     

用于微波磁控管逆变电源的设计

本文介绍了24V－220V，一千瓦逆变电源的设计与实现，介绍了GS3525的结构特性与使用，介绍了功率MOSFET的原理，使用与保护，变压器的设计。     

语义桌面——个人计算机技术的未来发展方向

本文介绍了语义Web在个人计算机方面的一种新应用——语义桌面技术。首先介绍语义桌面的产生和发展历程，然后给出语义桌面的定义和体系结构，并且介绍了语义桌面的各个组成部分。接下来，介绍了语义桌面技术当前的研究现状，包括目前的研究项目和相关的开发工具。最后，对语义桌面技术将来发展的方向作了展望。     

基于ACIS平台的大型三维CAD系统的设计与开发

该文介绍了一个基于ACIS平台的大型三维CAD系统的设计、开发与应用。分别介绍了该系统的交互系统、造型系统和渲染系统的设计与实现。设计了一个栈式命令处理系统，便于实现异常复杂的用户交互命令。简要介绍了特征造型功能在ACIS平台上的实现。在ACIS框架上自选算法，重新设计了渲染引擎，扩展了渲染数据结构和功能，克服了ACIS提供的渲染引擎的局限性，得到了独特的渲染效果。最后介绍了本系统的应用情况。     

基于LabVIEW的信号示波分析仪的开发

本文在介绍了虚拟仪器与LabVIEW的基础上，提出了虚拟信号示波分析仪的总体设计方案，并以此为基础较详细地介绍了该仪器的各个部分的软件设计。经过测试和实际应用，该仪器功能正常，运行可靠，能满足高等学校实验室和科研需求，达到了设计要求。     

一种基于HLA的多级网络通讯模型的研究与实现

结合某分布式作战仿真系统总控台系统，介绍了一种基于HLA的多级网络通讯模型。首先介绍了总控台系统，然后分析了整个系统数据传输的特点，从而提出了多级网络通讯模型。通过对当今几种比较常用的网络协议进行分析，给出了多级网络通讯模型的设计思路。介绍了它的结构与主要特点。最后，给出了该多级网络通讯模型的一种实现方法，包括各级网络通讯的实现与多层网络的时钟同步等。所介绍的网络模型的设计方法，对其它类似的系统的设计具有一定的参考价值。     

无线数据采集的研究与实现

比较了数据采集的各种方式的优缺点，介绍了无线方式进行数据采集的必要性和先进性，阐述了其优点，介绍了无线方式实际应用的三种方式：C／S，B／S和调用Web Service方式，对其分别实现的难易程度、适用的范围进行了深入的比较和分析，指出了各自的优缺点和使用范围。对无线数据采集系统的各个方面如无线数据采集器等都进行了介绍，并结合自行开发的一个无线数据采集系统着重介绍了无线实时数据采集系统的设计与实现。     

随机序列信号的产生及应用

本文论述了伪随机序列的性质及原理，着重介绍了如何用原理，着重介绍如何用线性移位寄存器来产生伪随机序列，取后介绍了伪随机序列在单工同频系统中的应用。     

无线电监控系统在自来水公司中的应用

介绍了广东省花都市自来水公司使用的无线电监控系统，系统以，PLC、无线数传输电台组成无线电通讯网络的控制系统，实现自来水公司下的各水厂的管理、监控。     

污水处理厂的再生水工艺自控系统

本文以营口污水处理厂再生水自动化控制系统为例,详细介绍了该控制系统的配置和功能。目前,这套系统已经运行了两年多,不仅节省了劳动力、提高了管理水平,而且获得了较高的经济效益。     

基于Profibus-DP现场总线的S7-400控制器在反渗透水处理的应用

以延炼水处理项目为背景,以目前较先进的反渗透水处理工艺的控制要求为依据,介绍了由S7-400 PLC、组态软件WinCC组成的基于ProfiBus-DP总线的分布式控制系统在污水处理厂中的软硬件设计、开发过程.     

Modeling the pathways and attenuation of nutrients from domestic wastewater treatment systems at a catchment scale

Domestic Wastewater Treatment Systems (DWTS) are often cited as significant sources of pollution in rural catchments. A mass balance based model has been developed to determine annual nutrient loading from individual DWTS into rivers in Ireland. The transport and attenuation of nitrogen and phosphorus in DWTS effluent to groundwater and surface water has been formulated using the results from field research in Ireland, as well as being informed by other international studies. Conceptually the model splits the transport of nutrients to the river into three pathways: direct to surface water (for areas of inadequate percolation), a near surface (subsoil) pathway, and a groundwater pathway. The model quantifies the net nutrient contribution for each DWTS and has been incorporated into a broader source load apportionment catchment model which includes agricultural inputs, thereby enabling the relative risk of nutrient pollution from DWTS in a catchment to be defined.     

西门子PLC及PROFIBUS在污水处理厂中的应用

西安市第四污水处理厂的总设计处理能力为50万m3／日,一期工程设计处理能力为25万m3／日。该项目为西北最大的污水处理厂之一,它具有设备数量多,控制地点分散,处理工艺要求高,系统稳定性和实时性要求严格等特点,因而在设计中采用了技术领先的工业以太网和PROFIBUS现场总线技术来实现全厂自动控制和仪表系统的集成。本文就该系统的设计、配置、实现和特点进行了论述,并重点描述了PROFIBUS总线技术在水处理行业的完整解决方案。     

Application of Bayesian Network Learning Methods to Waste Water Treatment Plants

Bayesian Networks have been proposed as an alternative to rule-based systems in domains with uncertainty. Applications in monitoring and control can benefit from this form of knowledge representation. Following the work of Chong and Walley, we explore the possibilities of Bayesian Networks in the Waste Water Treatment Plants (WWTP) monitoring and control domain. We show the advantages of modelling knowledge in such a domain by means of Bayesian networks, put forth new methods for knowledge acquisition, describe their applications to a real waste water treatment plant and comment on the results. We also show how a Bayesian Network learning environment was used in the process and which characteristics of data in the domain suggested new ways of representing knowledge in network form but with uncertainty representations formalisms other than probability. The results of applying a possibilistic extension of current learning methods are also shown and compared.     

罗克韦尔SLC500 PLC在淮安市四季青污水处理厂改建工程中的应用

本文介绍了罗克韦尔SLC500系列PLC在江苏省淮安市四季青污水处理厂改建工程中的应用,描述了四季青污水处理厂改建工程工艺,PLC自控系统构成,主要工艺设备控制原理和软件设计思路。四季青改建工程由华北市政设计院设计,自控系统的集成及软件的制作由杭州和利时自动化控制有限公司完成。     

Nutrient monitoring,simulation and management within a major lowland UK river system: the Kennet

This paper describes an assessment of the nitrogen and phosphorus dynamics of the River Kennet in the south east of England. The Kennet catchment (1200 km²) is a predominantly groundwater fed river impacted by agricultural and sewage sources of nutrient (nitrogen and phosphorus) pollution. The results from a suite of simulation models are integrated to assess the key spatial and temporal variations in the nitrogen (N) and phosphorus (P) chemistry, and the influence of changes in phosphorous inputs from a Sewage Treatment Works on the macrophyte and epiphyte growth patterns. The models used are the Export Co-efficient model, the Integrated Nitrogen in Catchments model, and a new model of in-stream phosphorus and macrophyte dynamics: the ‘Kennet’ model. The paper concludes with a discussion on the present state of knowledge regarding the water quality functioning, future research needs regarding environmental modelling and the use of models as management tools for large, nutrient impacted riverine systems.     

Scenario analysis for the role of sanitation infrastructures in integrated urban wastewater management

Traditionally, the sanitation infrastructures of most of the Urban Wastewater Systems (UWSs) have been managed individually, without considering the many relationships among the sewer systems, Wastewater Treatment Plants (WWTPs) and receiving waters. The main objective of WWTP management was to comply with the emission limits, without considering the ecological state of the receiving waters. However, the European Union approved the Water Framework Directive (WFD) in 2000 that changes the conventional practice by introducing the integrated approach concept in the hydraulic infrastructure management. The same Directive also promotes the availability and use of decision support tools for water management, specifically where water resources are becoming increasingly scarce. This paper describes the work conducted in the Besòs catchment (Catalonia, NE of Spain) in order to deal with this European legislation. A study site was selected to develop an integrated model as a support tool for the UWS management. Specifically, two sewer systems, their WWTPs and a reach of the Congost River (a tributary of the Besòs River) have been modelled. The selected software to model flow and water quality were Infoworks CS, GPS-X and Infoworks RS for the sewer systems, WWTPs and stream reach, respectively. Besides these, a specific program was developed to be used as a data transfer interface between software. Once this model integration platform was built, and taking into account the expert knowledge of the managers, several management scenarios were defined including some critical events such as industrial spills, rainfall episodes, inhibition of nitrification, WWTP shutdowns, obstruction of a sewer system conduit and episodes of minimum river flow rates as well as potential control actions such as the implementation of storage tanks or the use of bypasses between sewer systems or WWTPs. All these scenarios were modelled and simulated and the results obtained were then analysed, focusing the attention on the river water quality, with the main objective being to gain relevant knowledge to deal with the tested scenarios.     

《固体废弃物处理与处置》多媒体课件开发

《固体废弃物处理与处置》是环境工程学科的一门核心课程，不但概念公式繁多，而且还有大量的实物图例以及工艺流程图。本文以Macromedia Authorware 5．0为开发工具，开发了《固体废弃物处理与处置》多媒体CAI课件。本文对课件的框架结构作了介绍，着重阐述了概念表述、公式推导、工艺流程等主要教学内容的图象表现方式和动态交互式表现方式，使复杂内容简单化、静态内容动态化，具有较好的教学效果。