NTPS410 Exasmoc在線多變量，模型預(yù)測(cè)和優(yōu)化控制器
內(nèi)容
PART-A Exasmoc控制器簡(jiǎn)介
A1簡(jiǎn)介 ................................................. . ................................................. ........................... 1
A1.1 Exasmoc在線控制器定位........................................... .. .. ............................................ 2
A2 功能概述.......... .......................................... .............. .................................... .................. 4
A2.1控制器規(guī)格............................................. ............................ .................................. ........ 5
A2.2控制術(shù)語和功能............................................... .............................................................. 9
A2.3 Exasmoc控制器操作模式.................. ..... ................................................................... 15
A3 建模模塊概述..................................... ........................................................................ 16
A3.1搭建Exasmoc控制器的基本流程圖......................... ................................................. 19
A3.2控制器內(nèi)部結(jié)構(gòu)........................................................................................................ 24
A1 簡(jiǎn)介
本手冊(cè)的這一部分簡(jiǎn)要介紹了Exasmoc多變量模型預(yù)測(cè)優(yōu)化控制器如何在流程工業(yè)中的分布式控制系統(tǒng)（DCS）實(shí)現(xiàn)。
A1.1 Exasmoc在線控制器定位
工業(yè)過程控制通常具有三個(gè)等級(jí)級(jí)別，如下所述。
? 第一級(jí) - 基礎(chǔ)監(jiān)管控制（BRC）
該級(jí)別涵蓋了在分布式控制系統(tǒng)（DCS）控制站中執(zhí)行的PID，串級(jí)控制和比值控制等。操作員和工程師通過操作站訪問這些控制器，以更改自動(dòng)/手動(dòng)，設(shè)定點(diǎn)和調(diào)整參數(shù)等。大多數(shù)過程控制應(yīng)用的工廠需要BRC。?
? 第二級(jí) - 增強(qiáng)型監(jiān)管控制（ERC）。
該級(jí)別高于BRC，涵蓋了過程中的一些復(fù)雜情況，諸如間隙控制，基于計(jì)算的控制，基于SEBOL程序功能塊的控制等。ERC可能需要較少的功能控制塊來滿足特定的控制原理。盡管它是第二級(jí)，ERC方案的執(zhí)行仍在DCS的控制站下。操作員和工程師可以通過操作站訪問ERC控制方案。
一些COAST（本章中定義的控制應(yīng)用標(biāo)準(zhǔn)）模塊作為一些典型的過程單元的ERC，例如爐線圈平衡，浪涌控制等。
? 第三級(jí) – 先進(jìn)過程控制（APC）
APC處理過程中最復(fù)雜的情況。它具有多變量，模型預(yù)測(cè)和優(yōu)化功能。Exasmoc控制器提供了這些特征。
Exasmoc控制器在與DCS控制總線聯(lián)網(wǎng)的專門設(shè)計(jì)的Windows基站下運(yùn)行。本手冊(cè)中這樣的站被定義為Exasmoc站。操作員和工程師可以通過用于BRC / ERC的操作站或單獨(dú)的Windows基站接口站與Exasmoc站訪問Exasmoc。也可以使用Exasmoc監(jiān)視器訪問Exasmoc控制器。
以下部分將介紹Exasmoc控制器的基本系統(tǒng)配置。
? 基本系統(tǒng)配置
如下圖所示，Exasmoc站與DCS聯(lián)網(wǎng)。用戶的實(shí)際系統(tǒng)配置將基于基本配置。
原文：
NTPS410 Exasmoc Online Multivariable, Model Predictive and Optimizing Controller
CONTENTS
PART- A Introduction of Exasmoc Controller
A1. Introduction .............................................................................................................................. 1
A1.1 Exasmoc online Controller position ..................................................................................... 2
A2. Functional Outline .................................................................................................................... 4
A2.1 Controller Specification ....................................................................................................... 5
A2.2 Control Terminology and Functionality................................................................................. 9
A2.3 Exasmoc Controller modes of operation ........................................................................... 15
A3. Overview of Building Blocks .............................................................................................. 16
A3.1 Basic Flow Diagram for building Exasmoc controller ....................................................... 19
A3.2 Controller Internal Structure .............................................................................................. 24
A1. Introduction
This section of the manual describes in general how Exasmoc multivariable model predictive optimizing controller is implemented for a process plant, along with Distributed Control System (DCS).
A1.1 Exasmoc online Controller position
Industrial process control in general has three hierarchical levels as described below.
? First Level - Basic Regulatory Control (BRC)
This level covers PID, Cascade Control and Ratio Control etc., which are executed in control stations of Distributed Control System (DCS). Operator and Engineers access these controllers through operator stations for changing Auto/Manual, Set Point, and Tuning Parameters etc. The entire plant in most of the process control application needs BRC.
? Second Level - Enhanced Regulatory Control (ERC).
This level is one level above BRC covers a bit complex situation in the process such as gap control, calculation based control, SEBOL program function block based control etc. ERC may need few function control blocks to address particular control philosophy. Even though it is second level the execution of the ERC scheme is still under the control station of a DCS. Operators and engineers can access ERC control schemes through operator station.
Some of the COAST (Control Application Standards defined in this chapter) modules work as an ERC for some typical process units such as Furnace coil balancing, Surge volume control etc.
? Third Level - Advanced Process Control (APC)
APC handles the most complex situation in the process. It has multivariable, model predictive and optimization features. Exasmoc controller provides these features.
Exasmoc controller runs under the specially designed Windows based station networked with DCS Control bus. Such station in this manual is defined as Exasmoc Station. Operators and Engineers can access the Exasmoc either through same operator station used for BRC/ERC OR separate Windows based station interfaced station’s with Exasmoc station. It is also possible to use Exasmoc monitor for accessing Exasmoc controller.
Following section will describe the basic system configuration for Exasmoc controller.
? Basic System configuration
Exasmoc Station is networked with DCS, which is shown in the following figure. User’s actual System configuration will be based on basic configuration.
2017.3.19
