SIST EN 61297:1998
(Main)Industrial-process control systems - Classification of adaptive controllers for the purpose of evaluation
Industrial-process control systems - Classification of adaptive controllers for the purpose of evaluation
Classifies and defines the terms to be used in describing the different types of adaptive controller. The classifications described are logically a complete series, although it is quite possible that no controller will be available in some of the categories described. However, many controllers will be classified under more than one category described in this standard.
Industrielle Prozeßleitsysteme - Klassifikation von adaptiven Reglern
Systèmes de commande des processus industriels - Classification des régulateurs adaptatifs en vue de leur évaluation
Classifie et définit les termes à utiliser pour la description des différents types de régulateurs adaptatifs. Les classifications décrites forment logiquement une série complète, bien qu'il soit parfaitement possible qu'aucun régulateur n'existe dans certaines des catégories décrites. Toutefois, de nombreux régulateurs seront classés sous plus d'une des catégories décrites dans cette norme.
Industrial-process control systems - Classification of adaptive controllers for the purpose of evaluation (IEC 61297:1995)
General Information
- Status
- Published
- Publication Date
- 31-Oct-1998
- Technical Committee
- MKP - Industrial-process measurement and control
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Nov-1998
- Due Date
- 01-Nov-1998
- Completion Date
- 01-Nov-1998
Overview
EN 61297:1995 (identical to IEC 61297:1995) provides a clear classification of adaptive controllers for the purpose of evaluation in industrial-process control systems. The standard defines terminology and a logical taxonomy that helps engineers, evaluators and procurement specialists describe and compare adaptive control designs. It separates adaptive controllers into two main types - self-adaptive and fixed dependency adaptation - and specifies terms used to describe adaptation mechanisms, controller structure, signals and adaptation methods.
Key Topics
- Two principal categories
- Self-adaptive controllers: controllers that adjust their control characteristics automatically (either on demand or continuously) to achieve a specified response.
- Fixed dependency adaptation: controllers updated according to prescribed changes based on measured process characteristics (a process model drives the adaptation).
- Types of self-adaptive implementations
- Self-tuning on demand - parameters adjusted when requested by an operator.
- Continuously self-tuning - parameters adjusted continually during operation.
- Structure adaptive - adaptation modifies controller structure (e.g., P↔PI switching).
- Signal adaptive - adaptation modifies input signal characteristics (e.g., input filtering).
- Fixed-dependency variants
- Parameter scheduling - preset parameter changes depending on measured process variables.
- Structure scheduling - switching controller structure by predefined rules.
- Signal scheduling - changing input signal processing as a function of process state.
- Adaptation method descriptors
- Direct vs. indirect adaptation (whether a process model is explicitly generated).
- Deterministic vs. stochastic quality criteria for adaptation.
- Controller algorithm context
- The naming convention includes the underlying control algorithm (e.g., PID, state-space), plus adaptation method and scheduling/self-tuning classification.
Applications
EN 61297:1995 is practical for:
- Control engineers and system integrators specifying or designing adaptive control solutions.
- Test and evaluation teams comparing controllers consistently for performance and suitability.
- Procurement and compliance staff creating evaluation criteria and tender documents.
- Manufacturers and vendors documenting controller capabilities unambiguously.
- Academia and training for teaching adaptive control taxonomy and evaluation practices.
Use cases include selecting adaptive controllers for continuous processes, documenting adaptive behavior in technical specifications, and creating interoperable test reports.
Related Standards
- IEC/EN naming and harmonization practice: this standard complements other industrial-process control standards (e.g., standards for PID controllers, control system safety and measurement/telemetry domains). Refer to IEC technical committee publications on process measurement and control for adjacent requirements.
Keywords: EN 61297:1995, IEC 61297, adaptive controllers, industrial-process control, classification, self-adaptive, fixed dependency adaptation, self-tuning, scheduling, controller evaluation.
Frequently Asked Questions
SIST EN 61297:1998 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Industrial-process control systems - Classification of adaptive controllers for the purpose of evaluation". This standard covers: Classifies and defines the terms to be used in describing the different types of adaptive controller. The classifications described are logically a complete series, although it is quite possible that no controller will be available in some of the categories described. However, many controllers will be classified under more than one category described in this standard.
Classifies and defines the terms to be used in describing the different types of adaptive controller. The classifications described are logically a complete series, although it is quite possible that no controller will be available in some of the categories described. However, many controllers will be classified under more than one category described in this standard.
SIST EN 61297:1998 is classified under the following ICS (International Classification for Standards) categories: 25.040.40 - Industrial process measurement and control; 33.200 - Telecontrol. Telemetering. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 61297:1998 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-1998
Industrial-process control systems - Classification of adaptive controllers for the
purpose of evaluation (IEC 61297:1995)
Industrial-process control systems - Classification of adaptive controllers for the purpose
of evaluation
Industrielle Prozeßleitsysteme - Klassifikation von adaptiven Reglern
Systèmes de commande des processus industriels - Classification des régulateurs
adaptatifs en vue de leur évaluation
Ta slovenski standard je istoveten z: EN 61297:1995
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE IEC
INTERNATIONAL
Première édition
STANDARD
First edition
1995-07
Systèmes de commande des processus
industriels -
Classification des régulateurs adaptatifs
en vue de leur évaluation
Industrial-process control systems -
Classification of adaptive controllers for
the purpose of evaluation
© CEI 1995 Droits de reproduction réservés — Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
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1297 0 IEC:1995 - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Classification of methods of adaptation 7
2.1 Main categories 7
2.2 Self-adaptive controllers 7
2.3 Fixed dependency adaptive controllers 7
3 Terminology for self-adaptive controllers 9
4 Terminology for controllers with fixed dependency adaptation
5 Terminology for the description of the adaptation process
6 Summary of terms
1297 ©IEC:1995 - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
INDUSTRIAL-PROCESS CONTROL SYSTEMS -
CLASSIFICATION OF ADAPTIVE CONTROLLERS FOR
THE PURPOSE OF EVALUATION
FOREWORD
The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
1)
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
2)
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use published in the form of standards, technical
3)
reports or guides and they are accepted by the National Committees in that sense.
In order to promote international unification, IEC National Committees undertake to apply IEC International
4)
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
International Standard IEC 1297 has been prepared by sub-committee 65S: Devices, of
IEC technical committee 65: Industrial-process measurement and control.
The text of this standard is based on the following documents:
Report on voting
DIS
65B/243/RVD
65B/226/DIS
Full information on the voting for the approval of this standard can be found in the report
on voting indicated in the above table.
1297©IEC:1995 - 7 -
INDUSTRIAL-PROCESS CONTROL SYSTEMS -
CLASSIFICATION OF ADAPTIVE CONTROLLERS FOR
THE PURPOSE OF EVALUATION
1 Scope
This International Standard classifies and defines the terms to be used in describing
the different types of adaptive controller. The classifications described are logically a com-
pl
...
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