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Model maintenance architecture for advanced process control

A process control, process controller technology, applied in the field of model maintenance architecture for advanced process control, can solve problems such as reducing the benefits of configuring advanced control algorithms and failing to implement controller design

Inactive Publication Date: 2010-06-16
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aggressive controller design cannot be achieved without high-fidelity models
Closed-loop control performance will be bound by plant output and will not aggressively meet targets on putative variables, thus substantially reducing the benefit of deploying advanced control algorithms

Method used

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  • Model maintenance architecture for advanced process control
  • Model maintenance architecture for advanced process control
  • Model maintenance architecture for advanced process control

Examples

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Embodiment Construction

[0011] In the following description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustrations specific embodiments in which they may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that structural, logical and other modifications may be made without departing from the scope of the present invention. and electrical changes. Accordingly, the following description of example embodiments is not intended to limit the invention. Accordingly, the following description of example embodiments should not be taken in a limiting sense, the scope of the invention being defined by the appended claims.

[0012] In one embodiment, the functions or algorithms described herein can be implemented in the form of software or a combination of software and manually implemented programs. ...

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Abstract

A system and method modifies a dynamic model of a process in a plant for an advanced process control controller (115) wherein the model (115, 330) includes sub models. Performance of the controller is monitored (120, 305, 405) and performance degradation is quantified as the process changes. It is then determined whether a selected number of sub models need updating or the entire model dynamics need updating (315, 410) as a function of the quantified controller performance degradation. If a selected number of sub models need updating, an excitation signal is initiated for such sub models (325, 415) to identify new sub models. If the entire model dynamics need updating, a complete perturbation signal is initiated (320, 420) and triggers exhaustive closed-loop identification of entire model (130,430). The newly identified model or sub models is incorporated in the controller (435).

Description

Background technique [0001] For competitive manufacturing, reducing operating costs, maintaining high productivity and consistent quality is critical to the profitability of the industry. The installation of advanced process control (APC) strategies has been shown to increase profits and provide the aforementioned quality requirements. However, it was observed that the performance of these control strategies degrades over time. This performance degradation is due to insufficient monitoring of closed-loop performance and insufficient activation of maintenance / enhancement of the quality of individual entities such as process models. [0002] APC controllers are implemented for major processing units in refineries and chemical plants throughout the world. Manipulation from the current operating regime to a more favorable and productive regime is feasible using a multivariate APC strategy. Various operational and design constraints associated with the process are conveniently p...

Claims

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Application Information

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IPC IPC(8): G05B17/02G05B23/02
CPCG05B17/02G05B23/0202
Inventor R·耶尔楚鲁S·P·埃达马达卡哈里戈帕尔·拉哈万拉文德拉·D·古迪亚加迪斯·布拉马佐休拉
Owner HONEYWELL INT INC
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