A3. Overview of Building Blocks-2

控制器设计与仿真
这是一个基于Windows的软件包，与AIDAPro集成，用于设计，测试和构建Exasmoc控制器。AIDAPro生成过程动态模型。或者，可以使用Graphical Model Builder构建模型。SMOC-PC允许仿真控制器行为来测试整定，模型误差鲁棒性和优化性能。离线设计的最后阶段是创建控制器文件（.EXA），供在线Exasmoc控制器使用。
有关AIDAPro和Exasmoc离线设计的说明可在PCTP SMOCPro-PC用户指南中找到。
DCS接口定义
DCS接口定义模块将根据应用从DCS分配控制器输入/输出。
离线设计的最后阶段是创建定义文件（.EXA），供在线Exasmoc控制器使用。
PCTP SMOC-PC用户可以使用AIDA和Exasmoc离线设计指令。
Exasmoc在线控制器
在线控制器包含了实时控制器所需的所有功能。包括信号验证，初始化，模式摘除，标准操作员和工程师界面以及控制器引擎。如前所述，Exasmoc在线控制器是基于Windows，运行于Exasmoc站的控制器。
本手册向用户提供了用于实际工厂中APC控制模式下的Exasmoc在线控制器的控制，操作，监控和配置/调优功能的分步说明。

 Exasmoc的补充软件包

补充软件包（COAST和RQE）补充了基于Exasmoc的APC策略。这些软件包的使用将取决于过程的类型和APC方案的需求。
COAST：控制应用标准
这是一个应用于石油，天然气，化工和石油化工连续加工的综合性高级控制模块库。 COAST模块通常与Exasmoc结合使用，提供支持控制功能和所需的过程计算，以实现特定应用所需的控制和操作目标。
参见图3.0a显示的一个示例。“塔盘负荷计算”（COAST库中的一个模块）提供了Exasmoc的计算。
以下是COAST库中某些模块的列表。
壳牌浪涌量控制（SSVC）：
SSVC是一种先进液位控制器，旨在通过充分利用可用的喘振容量来最大限度地减少进料流量变化对下游单元的影响。
熔炉线圈平衡：
该控制器通过调节线圈流量设定点来平衡炉膛出口温度。

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Controller design and simulation
This is a Windows based package, integrated with AIDAPro, to design, test and build Exasmoc controllers. AIDAPro generates the process dynamic model. Alternatively, the model may be built using the Graphical Model Builder. SMOC-PC allows to simulate the controller behavior to test the tuning, robustness to model errors and optimization performance. The final stage in the off-line design is the creation of the controller file (.EXA), for use by the on-line Exasmoc controller.
Instruction for AIDAPro and Exasmoc offline design are available in PCTP SMOCPro-PC user guide.
DCS interface definition
DCS interface definition module will assign the controller inputs/outputs from/to DCS according to applications.
The final stage in the off-line design is the creation of the definition file (.EXA), for use by the on-line Exasmoc controller.
Instruction for AIDA and Exasmoc offline design are available in PCTP SMOC-PC user.
Exasmoc on-line controller
The on-line controller incorporates all functions required for the operation of the controller in real time. This includes signal validation, Initialization, mode shedding, standard operator and engineer interface, and controller engine. The Exasmoc on-line controller is the one, which runs in Windows, based Exasmoc station described earlier.
This manual provides the step-by-step instructions to the user for the control, operation, monitoring and configuration/tuning functions of Exasmoc online controller for actually controlling the plant in APC mode.

 Supplementary packages for Exasmoc

Following supplementary packages (COAST and RQE) complement the Exasmoc based APC strategies. The use of these package will depend upon the by type of process and need of APC scheme for it.
COAST: Control Application Standards
This is a comprehensive library of advanced control modules for standard applications to continuous process in oil, gas, chemical and petrochemicals. COAST modules are generally used in conjunction with Exasmoc, and provide the supporting control functions and process calculations needed to achieve the desired control and operating objectives for a particular application.
Refer figure 3.0a, where an example is shown. “Tray Loading Calculations” (One of the module within COAST library) provides calculations for Exasmoc.
Following is the list of some of the modules from the COAST library.
Shell Surge Volume Control (SSVC):
SSVC is an advanced level controller, designed to minimize the effect of feed flow changes on down stream units, by making the best use of available surge vessel capacity.
Furnace Coil Balancing:
This controller is used for balancing furnace coil outlet temperatures, by adjusting the coils flow set points.

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2017.3.28