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首页> 外文学位 >A laboratory-scale single stage flash desalination process plant: Design, modeling, and automation using an intelligent controller.
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A laboratory-scale single stage flash desalination process plant: Design, modeling, and automation using an intelligent controller.

机译：实验室规模的单级闪蒸脱盐工艺设备：使用智能控制器进行设计，建模和自动化。

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摘要

A laboratory-scale single-stage flash desalination plant was designed, modeled, built, and automated using a fuzzy logic controller. Various aspects of this experimental test-bed allow it to be computer controlled, and thus it will allow testing of other modern control architectures and approaches.; The laboratory-scale plant has been designed from basic principles of flash desalination process. The only major difference between the laboratory-scale plant and a commercial plant is the brine heater. An electric water heater has been used instead of a heat exchanger that uses extra steam from a power plant to supply thermal energy to incoming seawater. The plant design was done in such a way that most of the electrical and mechanical parts in the plant have been bought off the shelf.; Existing flash-based desalination plants are generally very large scale; development of control systems, therefore, have been mostly limited to simulations. These plants, also called Multi-Stage Flash (MSF) desalination plants, conventionally operate with old control schemes and they are not necessarily robust. Classical controls require an explicit mathematical model of how control outputs depend on control inputs. Fuzzy controllers differ from classical model-based controllers. Fuzzy controllers do not necessarily require a mathematical model of how control output functionally depends on controller input. The uncertainties and nonlinearities inherent in a large-scale real time system such as an MSF plant make it an ideal candidate for model-free control schemes such as fuzzy logic control.; This research and development effort derived the following contributions to the state-of-the-art in desalination and process control: (i) a novel approach for the intelligent process control, (ii) the design and implementation of the flash desalination process plant and the control system, (iii) a fuzzy logic controller (FLC) for such a process plant is also the first, (iv) a mathematical model for the most critical component of the desalination process plant; this has made possible a comparison of performances derived from a fuzzy logic controller with that of a classical PID controller, (v) an algorithm for fuzzy logic controller design for flash desalination process plant, and (vi) a user friendly software interface for controlling the plant. (Abstract shortened by UMI.)
机译：使用模糊逻辑控制器设计，建模，建造和自动化了实验室规模的单级闪蒸脱盐工厂。该试验性试验台的各个方面都可以用计算机控制，因此可以试验其他现代控制体系结构和方法。实验室规模的工厂是根据闪蒸淡化工艺的基本原理设计的。实验室规模的工厂和商业工厂之间的唯一主要区别是盐水加热器。已经使用电热水器来代替热交换器，该热交换器使用来自发电厂的额外蒸汽为进入的海水提供热能。工厂的设计是这样的，即工厂中的大多数电气和机械零件都已经购买了。现有的基于闪蒸的海水淡化厂通常规模非常大。因此，控制系统的开发主要限于仿真。这些工厂，也称为多级闪速（MSF）海水淡化工厂，通常使用旧的控制方案运行，并且不一定坚固。经典控制需要一个明确的数学模型，说明控制输出如何依赖于控制输入。模糊控制器不同于经典的基于模型的控制器。模糊控制器不一定需要数学模型来说明控制输出在功能上如何取决于控制器输入。大型实时系统（例如MSF工厂）固有的不确定性和非线性使其成为诸如模糊逻辑控制之类的无模型控制方案的理想选择。这项研究和开发工作为海水淡化和过程控制领域的最新技术做出了以下贡献：（i）一种智能过程控制的新方法，（ii）闪蒸淡化过程工厂的设计和实施以及控制系统，（iii）用于这种加工厂的模糊逻辑控制器（FLC）也是第一个;（iv）用于脱盐加工厂的最关键组件的数学模型;这使得将模糊逻辑控制器与经典PID控制器的性能进行比较成为可能，（v）闪蒸淡化过程工厂的模糊逻辑控制器设计算法，以及（vi）用于控制厂。 （摘要由UMI缩短。）

著录项

  • 作者

    Sarkar, Purnendu.;

  • 作者单位

    The University of New Mexico.;

  • 授予单位 The University of New Mexico.;
  • 学科 Engineering Mechanical.; Engineering Sanitary and Municipal.; Engineering Civil.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 116 p.
  • 总页数 116
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;建筑科学;建筑科学;
  • 关键词

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