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1.
前馈串级控制在原油污水处理中的应用   总被引:1,自引:0,他引:1  
在原油污水处理过程中,加药量直接影响污水含油指标;但由于影响因素较多,对加药量的控制难度大。为了既减少成本又保证指标合格,通过分析污水处理工艺流程及生产控制原理,对原油污水处理加药系统提出了前馈串级控制方法。该方法对控制过程进行了优化,使被控量不会因扰动而产生偏差,提高了系统适应能力,降低了污水处理加药费用,同时保证了回注油田污水的质量。该控制方法调节速度快,动态偏差小,比较适合间歇生产过程的控制,为过程控制提供了一种行之有效的方法。  相似文献   

2.
人工湿地处理系统作为一种节能、经济、简易和有效的生态化污水处理技术,近几年来在我国一些城市应用较为广泛。根据人工湿地污水处理工艺流程的特点和过程控制的要求,采用计算机集散控制技术,设计人工湿地污水处理过程的分布式计算机控制系统。通过采用优化设定控制技术、解决人工湿地污水处理过程中存在的非线性、耦合等技术问题,实现人工湿地污水处理过程的计算机自动控制,使人工湿地的处理水达到国家相关排放标准。  相似文献   

3.
该文以铁岭污水处理厂自动化控制系统为例,介绍了污水处理厂控制系统的配置和各项过程控制功能。要保证污水处理系统的可靠运转,装备一套高性能的自动化系统是必不可少的。本项目采用的集散控制系统对污水处理厂的正常生产起到至关重要的作用。  相似文献   

4.
论述在城市污水处理系统中采用先进的控制技术、GPRS技术等,优化污水收集管网的预处理工艺及一级处理工艺,即通过污水收集泵站自动控制、污水状态参数的联网监控及进厂输水联网集中优化调度控制,实现安全、节能运行。提出了一种提高污水处理的效率、降低处理成本的解决方案。  相似文献   

5.
控制系统采用施耐德PLC控制器和组态王上位机软件,对污水处理的整个过程进行实时监督和控制,达到降低系统运行成本,保证污水排放质量、实现少人、无人值守等目标。以局域网和PLC技术为支撑,结合了KingView软件,实现了污水处理各个信息相互传递及控制,遵循"集中管理、分散控制、数据共享"的原则,由此开发了成熟、稳定、可靠的计算机污水处理监控系统,保障了污水净化处理同时又节约了物耗和能耗。系统以其全天候、全自动化、便于使用等特点在污水自控领域发挥了独特的作用。  相似文献   

6.
忻州污水处理项目是一项属于五湖治理的重点工程,该污水处理厂的日处理污水能力为6.5万吨。为了实现“现场无人值守,总站少人值班”的目的,忻州污水处理厂选用和利时公司的HOLLiAS-PLC系统在该污水处理厂建立一个先进、可靠、高效且便于进一步扩充的集过程控制、监视和计算机管理于一体并且具备良好开放性的监控系统,完成对整个污水处理工艺过程及全部生产设备的监测与自动控制。  相似文献   

7.
本文针对传统PLC程序设计方法在控制污水处理系统中的局限,按照污水生物处理工艺的要求,创造性的提出采用二维矩阵控制设计方法来实现污水在同一反应池中自动完成进水,厌氧生化等功能;通过污水处理工艺控制矩阵图,在污水成分、进水流量及气候变化时,可以方便、快捷地调整污水处理控制工艺,满足污水处理厂安全、稳定运行的要求。  相似文献   

8.
污水处理的 PH值控制经常面对大滞后系统 ,且系统的过程特性随污水流量和原水 p H值等因素而变化 ,难以控制。本文提出的自适应前馈和自适应反馈控制技术可将污水 p H值平稳控制在设定值± 0 .15的范围内 ,采用普通 PL C实现。  相似文献   

9.
梁昔明  周威  李山春 《控制工程》2012,19(2):328-331,354
针对某污水处理厂鼓风机房、生化池曝气过程系统,介绍了一般污水处理厂的污水处理工艺流程,并就其中的曝气过程,提出了基于PLC和变频器的电气控制方案,设计了基于OPC技术的上位机监控系统。考虑到污水处理曝气过程具有间歇性、时滞性的特点,采用模糊控制对出水溶解氧浓度参数进行控制。基于一定假设,对曝气过程进行数学建模,通过Matlab仿真,将传统PID控制与模糊控制进行比较,结果表明了模糊控制策略的有效性和优越性。  相似文献   

10.
《传感器世界》2007,13(9):43-43
本系统以用户需求出发,运用计算机、自动控制、通信网络、人工智能等技术对污水处理的全过程进行控制和调节。对污水处理过程进行集成创新。它把污水处理厂的各种工艺设备有机的结合起来,按照处理工艺的要求,将设备运行工况和工艺运行参数进行实时采集,并进行复杂智能运算,计算出最佳的控制和调节值,对工艺设备进行实时控制和调节,使污水处理过程降低运行费用,并使处理后的污水达标排放。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

18.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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