This ebook is the first authorized digital version of Kernighan and Ritchie's 1988 classic, The C Programming Language (2nd Ed.). One of the best-selling programming books published in the last fifty years, "K&R" has been called everything from the "bible" to "a landmark in computer science" and it has influenced generations of programmers. Available now for all leading ebook platforms, this concise and beautifully written text is a "must-have" reference for every serious programmers digital library.

As modestly described by the authors in the Preface to the First Edition, this "is not an introductory programming manual; it assumes some familiarity with basic programming concepts like variables, assignment statements, loops, and functions. Nonetheless, a novice programmer should be able to read along and pick up the language, although access to a more knowledgeable colleague will help."

The C programming language

H2CM: A holonic architecture for flexible hybrid control systems

Integration in industrial automation based on multi-agent systems using cultural algorithms for optimizing the coordination mechanisms

Automated production systems are usually driven by Programmable Logic Controllers (PLCs). These systems are long-living – yet have to adapt to changing requirements over time. This paper presents a novel method for regression verification of PLC code, which allows one to prove that a new revision of the plant’s software does not break existing intended behavior.

/pdf/regression-verification-for-programmable-logic-controller-43q3r8b5bi.pdf

Regression Verification for Programmable Logic Controller Software

http://www.lsis.org/hennetjc/PUBLIS/CompInd_04.pdf

Coordination and optimization in oil and gas production complexes

En este articulo se presenta una metodologia que comprende las fases de conceptualizacion, analisis, diseno, codificacion y pruebas de sistemas de ingenieria basados en agentes,
fundamentada en la metodologia MultiAgent Systems for INtegrated Automation (MASINA), desarrollada para especificar sistemas multiagentes en ambientes de automatizacion industrial.
La metodologia propuesta usa el Lenguaje de Modelado Unificado (UML), ampliamente usado para modelar sistemas de software, y la Tecnica de Desarrollo de Sistemas de Objetos (TDSO), la cual es una herramienta para la especificacion formal de modelos orientados a objetos. Siguiendo los lineamientos metodologicos para la especificacion de sistemas de ingenieria, MASINA se inicia con la fase de conceptualizacion que permite identificar aquellos componentes del sistema que seran considerados agentes y proponer la arquitectura del sistema multiagentes correspondiente. Estos agentes y sus interrelaciones son especificados e implementados en las fases restantes de la metodologia propuesta, usando diagramas UML en la fase de analisis y diseno, y plantillas de TDSO en la fase de diseno.

Una Metodología para el Modelado de Sistemas de Ingeniería Orientado a Agentes

The development of integrated automation systems for continuous production plants is a very complicated process. A variety of factors must be taken into account, such as their different components (e.g., production units control systems, planning systems, financial systems, etc.), the interaction among them, and their different behavior (continuous or discrete). Moreover, the difficulty of this process is increased by the fact that each component can be viewed in a different way depending on the kind of decisions to be made, and its specific behavior. Modeling continuous production complexes as a composition of components, where, in turn, each component may also be a composite, appears to be the simplest and safest way to develop integrated automation systems. In order to provide the most versatile way to develop this kind of system, this work proposes a new approach for designing and building them, where process behavior, operation conditions and equipment conditions are integrated into a hierarchical automation architecture.

An integration architecture for the automation of a continuous production complex.

In order to implement a translator, a syntactic specification for the programming languages of the IEC 611131-3 standard is presented in this paper. This specification is built in function of the components of a formal grammar, which are the set of terminal symbols, the set of non terminal symbols, the start symbol or axiom and the set of production rules. The formal grammar described corresponds to a context-free grammar; which is currently being used to describe most of the programming languages. With the definition of this grammar, the programming languages of the IEC 611131-3 standard are formally described and is presented as an example, the syntactic specification of the textual programming languages, known as Instruction List and Structured Text. Then, the graphical programming languages (Ladder Diagram and Functional Block Diagram) can be specified in the same way. With the grammar described is possible to build a translator using open standards and open source that can generate code in high level programming language (like C programming language) to support the management of control logics.

A syntactic specification for the programming languages of the IEC 61131-3 standard

This paper presents a novel approach for the controller synthesis in discrete-time linear systems (DTLS) with uncertainty polytopical type, by means of the extended static feedback of the measured output. The method consists of designing feedback gains for the injection of the output and its derivative, which corresponds to the control signal. Conditions for the existence of such controllers are established. The uncertainty parameters are supposed to belong to a polytope. The stabilization problem is formulated in the context of linear matrix inequalities (LMI). Multiobjective performance indices in are also considered, which are described as LMIs. The extended H2|H∞ conditions are obtained by means of the well known projection lemma. Performance of the proposed synthesis technique is illustrated by a numerical example.

A robust control by extended static output feedback for discrete-time uncertain linear systems

This paper presents a novel approach for the controller synthesis in discrete-time linear systems (DTLS) with uncertainty polytopical type, by means of the extended static feedback of the measured output. The method consists of designing feedback gains for the injection of the output and its derivative, which corresponds to the control signal. Conditions for the existence of such controllers are established. The uncertainty parameters are supposed to belong to a polytope. The stabilization problem is formulated in the context of linear matrix inequalities (LMI). Multiobjective performance indices in are also considered, which are described as LMIs. The extended H2 | H∞ conditions are obtained by means of the well known projection lemma. Performance of the proposed synthesis technique is illustrated by a numerical example.

http://www.wseas.us/e-library/conferences/2010/Catania/ACMOS/ACMOS-64.pdf

Flor Narciso

Papers

Una Metodología para el Modelado de Sistemas de Ingeniería Orientado a Agentes

An integration architecture for the automation of a continuous production complex.

A syntactic specification for the programming languages of the IEC 61131-3 standard

A robust control by extended static output feedback for discrete-time uncertain linear systems

A robust control by extended static output feedback for discrete-time uncertain linear systems