控制工程师需要与操作员一起工作，向其解释如何理解操作员界面信息以及如何显示与DMCplus控制器的交互信息。
完成这些步骤后，我们开始实际调试。所有的操作变量限制在非常接近SP的范围内，这样控制器只允许非常小的控制动作。
接下来启动DMCplus控制器。一旦控制器开始运行，计算出动作并在过程中实施这些动作，控制工程师必须确保计算出的动作都在监管控制层执行。
在这时，将操作变量限制逐渐放开，对控制器性能进行评估，并根据需要重新整定。在控制器调试阶段，控制工程师又将昼夜不停的在中控室与操作员一起工作。
Step 9:举办正规操作培训
当DMCplus控制器成功投用后，将进行正式的操作员培训。之所以将培训延迟至竣工投产后进行，是因为即使在控制器调试阶段，也经常会修改控制器设计。
最常见的原因是DMCplus控制器优化过程时可能会有先前从未被观察到的问题触发约束变活跃。工厂测试收集到的带约束数据被用于此变量中建模，并且变量被加入控制器中。
将正式操作员培训延迟到试运行后进行，可以使得培训是在最终控制器方案状态下进行。
在这一步，你可以让工程师和操作员了解DMCplus View以学习如何使用它。
Step 10:维护DMCplus控制器
对任一DMCplus应用，都需要进行一定的维护以确保控制器保持在最佳性能。最常进行的维护工作是监测控制器的MV及CV的操作限，确认它们反映了所允许的最宽工作范围。若无人看守，这些限制常常会越来越近，从而限制了控制器流程优化的能力。详情请参阅DMCplus View文档。
参与维护控制器的另一个主要任务是当新的产品价值、进料及公用工程成本可用时，保持稳态可变成本的更新。如果可以使用电子表格捕捉成本计算，当新的经济信息可用后，运行计算并向过程控制数据库输入所产生的稳态可变成本值是一件简单的事。
维护DMCplus控制器时，通过使用Aspen Technology的new Aspen Watch软件可以在很大程度上提供便利。Aspen Watch是DMCplus的分层产品，它提供了控制器从一周期到下一周期所有相关的、完整的、无压缩、历史化以及可视化数据。同时控制性能度量也计算并呈现给用户。这使技术支持工程师可以确定目前的趋势、问题和潜在的需要改进的地方，以及查询历史业绩。关于该技术的其它信息可通过联系aco_support@aspentech.com获得。
附原文：
The control engineer works with the operators to explain how to interpret the information on the operator displays and how to use the displays to interact with the DMCplus controller.
Once these steps are accomplished, the actual commissioning takes place. All manipulated variable limits are pinched in very near the current setpoint values so that only very small control moves are allowed.
The DMCplus controller is then turned on. Once the controller runs, calculates moves, and implements these moves on the process, the control engineer must make sure that the calculated moves are actually implemented at the regulatory control level.
At this point, the manipulated variable limits are gradually relaxed, controller performance is evaluated, and re-tuning is done as required. During the controller commissioning phase, control engineers again work around the clock in the control room with the operators.
Step 9: Hold formal operator training
Once the DMCplus controller has been successfully commissioned,formal operator training takes place. This is deferred until after the completion of commissioning because it is not unusual to modify the controller design even during commissioning.
The most common reason for this is that the DMCplus controller,when optimizing the process, may cause a constraint to become active that was never observed to be a problem previously. The data for this constraint from the plant test is then used to build a model of this variable, and the variable is added to the controller.
Delaying formal operator training until after commissioning allows the training to be done in the context of the final controller.
At this point, you can familiarize your operators and engineers with DMCplus View and how to use it.
Step 10: Maintain the DMCplus controller
For any DMCplus application, some amount of maintenance is required to ensure maximum performance. The most frequently performed maintenance task is monitoring the operating limits on the manipulated and controlled variables in the controllers to confirm that they reflect the widest operating range allowed. Left unattended, these limits often get pinched closer and closer, thus limiting the controller's ability to optimize the process.Refer to the DMCplus View documentation for details.
The other major task involved in maintaining the controller is to keep the steady-state variable costs updated when new product values or feed and utility costs become available. If the cost calculations are captured using a spreadsheet, it is a simple matter to run the calculation when new economic information becomes available and then enter the resulting steady-state variable cost values into the process control database.
The task of maintaining the DMCplus controller is greatly facilitated by the use of Aspen Technology's new Aspen Watch software. AspenWatch is a layered product for DMCplus that provides full, uncompressed historization and visualization of all controller-related data on a cycle-to-cycle basis.Control performance metrics are also calculated and presented to the user.This allows support engineers to identify current trends, problems and potential areas for improvement as well as investigate historical performance. Additional information on this technology can be obtained by contacting aco_support@aspentech.com.
2015.9.21
