SMOCPro Tutorial SMOCPro教程

引言
介绍这些真实生活应用的例子是为了给SMOCPro应用中的一些选项提供更详细的见解。
第一个例子包含了一个双切分离器的双质量控制。这个例子提供了一个广泛处理SMOCPro典型工作会议的介绍。
另外两个例子演示了在SMOCPro控制器中使用低级别PID控制器，以及不稳定过程的控制。同时也演示了噪声模型的测量和脉冲因子的调谐。
此外，对一个包括了集合子控制器和经济函数的典型SMOCPro应用进行详细介绍。
最后，显示了一个实际使用计算引擎的例子。
案例1：脱丁烷塔
(\Program Files\ShellGlobalSolutions\PCTP\Tutorial\SMOCPro\Tutorial1_Debutanizer.wsp)
过程模型
该脱丁烷塔的控制问题是集中展现了SMOCPro应用程序各部分如何相互配合的一个直接例子。
该过程的描述总结于下图。

Figure 1 - Debutanizer flow scheme
图1—脱丁烷塔流程方案
塔顶和塔釜的组成分别是C4组分和iC5组分。我们感兴趣的是通过下面给定的指标控制这些品质。54块板的进料因子（%）有一个设定低限。再沸器节能仍有余地；其将被设定为经济指标。最后，进料流量对塔釜质量的影响可以被辨识出来，并作为可测量的扰动模型。（注意：在脱丁烷塔上游的另一个单元中，进料流量是一个操作变量）。
创建工作区
我们的目标是采用这种设计策略建立和调谐一个SMOCPro控制器。
1、 启动SMOCPro并创建一个新的工作区（从File菜单中）。
2、 选择一个合适的目录名称/位置用于存储SMOCPro工作区，例如WSP目录。

建立模型
作为MPC策略，SMOCPro让你建立脱丁烷塔过程模型作为控制器模型。
3、 单击树节点上的Model Builder文件夹。
4、 选择New，并同意控制器模型的默认名称。

5、 选择模型，并启动Graphical Model Builder (GMB)（图形模型构建器）。
6、 输入您的脱丁烷塔模型。
过程的辨识模型如下图所示：

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原文：
Introduction
These examples of real-life applications are presented to give a more detailed view of some of the options in the SMOCPro application.
The first example involves dual quality control on a two-cut splitter. This example is treated extensively to provide an introduction to a typical working session on SMOCPro.
Two other cases demonstrate the use of a low level PID controller in a SMOCPro controller, and the control of unstable processes. The measurement noise model and impulse factor tuning are also demonstrated.
Also, a typical SMOCPro application including a blending sub-controller and economic functions is detailed.
Lastly, examples are shown making use of the calculation engine.
Case 1: Debutanizer Column
(\Program Files\ShellGlobalSolutions\PCTP\Tutorial\SMOCPro\Tutorial1_Debutanizer.wsp)
**Process Model **
This Debutanizer column control problem is a straightforward example that serves showcases how the sections of the SMOCPro application fit together.
The process description is summarized in the figure below.
Top and bottom qualities are iC5 content and C4 content respectively. We are interested in controlling these qualities below given specifications. There is also an upper limit set on the tray 54 loading factor (in %). There is scope for energy saving at the reboiler; it will be set as an economic target. Finally, the influence of the Feed flow on the bottom quality could be identified and used as a measured disturbance model (Note: The Feed flow is actually manipulated in another unit upstream of the debutanizer).
Creating a Workspace
The objective is to build and tune a SMOCPro controller using this design strategy.
1.Start SMOCPro and create a new workspace (from the File menu).

2. Select a convenient directory name/location for storing SMOCPro workspaces, such as WSP directory.
   **Model Building **
   As an MPC strategy, SMOCPro lets you build the debutanizer process model as the controller model
   3.Click on Model Builder folder in the tree node.
3. Select New and accept the default name for the controller model name.
   5.Select the model and start Graphical Model Builder (GMB).
   6.Enter your debutanizer model.
   The model identified for this process is shown below.

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2016.5.12