Online Alignment of Process Analytical Models to Actual Process Operations

A process model, model technology, applied in the direction of program control, comprehensive factory control, instrumentation, etc., can solve problems such as poor analysis results, unsatisfactory, misleading, etc.

Active Publication Date: 2011-12-28
FISHER-ROSEMOUNT SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this assumption that the current batch has the same length of normalization as the aligned batches used to create the batch model is often wrong, and thus yields poor analytical results
Furthermore, such simplified heuristic rules are usually not sufficient for most applications
Therefore, these techniques lead to misleading results

Method used

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  • Online Alignment of Process Analytical Models to Actual Process Operations
  • Online Alignment of Process Analytical Models to Actual Process Operations
  • Online Alignment of Process Analytical Models to Actual Process Operations

Examples

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Embodiment Construction

[0030] figure 1 An exemplary process control system 10 is shown, including a process controller 11 connected to a data history database 12 and one or more main workstations or computers 13 (which may be any type of personal computer, workstation, etc.), each of the main workstations Or the computer 13 has a display screen 14. The controller 11 is also connected to the field devices 15-22 through input / output (I / O) cards 26 and 28, and can operate to implement one or more batch operations of the batch process using the field devices 15-22. The data history library 12 may be any required type of data collection unit, which has any required type of memory and any required or known software, hardware, or firmware for storing data. The data history database 12 can be separated from one of the workstations 13 (e.g. figure 1 Shown), or a part of one of the workstations 13. The controller 11, which may be, for example, the one sold by Emerson Process Management The controller is comm...

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PUM

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Abstract

Online alignment of process analytical models with actual process operations involves a batch modeling and analysis system that uses simple and computationally inexpensive techniques to combine data collected from ongoing, currently running, or online batch processes with The batch model built for the batch process is aligned such that the current operating status of the online batch process relative to the batch model can be reliably determined. This data alignment technology allows further statistical processing techniques, such as partial least squares (PLS) and principal component analysis (PCA) techniques, to be applied to online batch data to analyze the quality of the current running batch. In turn, these analyzes provide useful information to users such as batch operators so that they can determine the quality of the batch at that time based on the batch model and the likelihood that the desired batch output quality measure will be achieved at the end of the batch run. sex.

Description

Technical field [0001] The present invention generally relates to process control systems, and more specifically to the implementation of data alignment techniques for batch modeling systems that assist in analyzing and predicting the quality of online or ongoing batch processes. Background technique [0002] Process control systems, such as those used in chemical, petroleum, or other processes, usually include one or more process controllers, and are communicatively coupled to at least one host or via an analog, digital, or combined analog / digital bus An input / output (I / O) device for the operator workstation and one or more field devices. Field devices, which can be, for example, valves, valve positioners, switches and sensors (for example, temperature, pressure, and flow rate sensors), perform process control functions such as opening or closing valves and measuring process control parameters during the process. The process controller receives a signal representing the process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B23/024G05B19/41875Y02P90/02G05B13/04
Inventor W·K·沃杰茨尼斯T·L·布勒文斯
Owner FISHER-ROSEMOUNT SYST INC
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