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Statistical monitoring of control loops performance: An improved historical-data benchmark index

机译：控制环性能的统计监视：改进的历史数据基准索引

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Purpose:To propose a method of monitoring the performance of industrial control systems, and a new historical-data benchmark index (IM) that can discern between perturbations in the system's core modules.Summary:Control loops have controllers that collect information and produce actions at the level of manipulated variables, in an autonomous way, following some control law previously programmed based on the dynamic behavior of the elements to be controlled. Control performance degradation can arise from a number of different sources, namely changes in the operation range. This can be caused by modifications of the dynamic features of the process in open loop. Open-loop stands for the process operating without feedback control, whereas the term closed-loop refers to the process operating under control, where there is a link from its outputs to its inputs, forming a closed cycle of information flow-variation in the products/materials/equipment being used and various other external factors. Hence it is necessary to have methodologies for the assessment and monitoring of the performance of control loops which is normally referred to as control performance assessment/monitoring (CPA/CPM) where CPA is focused on computing a quantity that reflects the level of performance of a given controller, CPM is essentially centered in following it over time and detect any unusual trends in the performance. The paper presents an approach based on multi-input and multi-output (MIMO) method using historical data based bench marking. (25 refs.)
机译：目的：提出一种监视工业控制系统性能的方法，以及一种新的历史数据基准指数（IM），该指数可以识别系统核心模块中的扰动。遵循先前基于要控制元素的动态行为进行编程的某些控制定律，以自主方式调整操作变量的级别。控制性能下降可能源于多种不同的来源，即操作范围的变化。这可能是由于修改了开环过程的动态功能而引起的。开环表示没有反馈控制的过程运行，而闭环一词是指在控制下运行的过程，其中从其输出到其输入之间存在链接，从而形成了产品中信息流变化的闭环。 /使用的材料/设备以及其他各种外部因素。因此，有必要采用一种方法来评估和监视控制回路的性能，通常将其称为控制性能评估/监控（CPA / CPM），其中CPA专注于计算反映控制系统性能水平的数量。对于给定的控制器，CPM本质上是随时间推移关注其中心，并检测性能的任何异常趋势。本文提出了一种基于基于历史数据的基准标记的多输入多输出（MIMO）方法。 （25参考）

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