Authors: Libor Pekar; Roman Prokop

Abstract: The paper brings an engineering acceptable approach for anisochronic controllers. The method is based on algebraic tools in the ring of RQ-meromorphic functions and it was developed for a wide class of delayed systems. This contribution deals with so-called anisochronic systems which include delays also in dynamics. Both stable and unstable systems are assumed. The control synthesis consists in the solution of the Bèzout identity and Youla-Kučera parameterization resulting in the Smith-like control structure. A final controller can be tuned by a suitable choice of a scalar real parameter. Among many others tuning methods, the equalization method is adopted. The approach is suitable also for high order dynamics approximation and autotuning procedures. First order stable and unstable simulation examples are presented.

Keywords: algebraic approaches,delay compensation,diophantine equation,parameterization,Smith predictor

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00026

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 153-158

Authors: Kurios Iuri Pinheiro de Melo Queiroz; Francisco das Chagas Mota; Jose Marcelo Lima Duarte; Manoel Joseane Mafra de Carvalho

Abstract: This paper describes a control system developed for a satellite tracking antenna located at National Institute for Space Research (Natal-Brazil). Both driving system (hardware) and the control software are shown. The system has used materials (cables, antenna, motors, inverters, etc) from a deactivated satellite ground station. The software was developed using the GNU/Linux platform and the Comedi Package, used for developing the AD/DA board drivers and for providing libraries to the main program.

Keywords: tracking,satellite,antenna,control,Linux and free software

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00027

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 159-164

Authors: Zdenka Prokopova; Roman Prokop

Abstract: The contribution presents a control design method for robust tuning of continuous-time controllers for SISO with time delays. Controllers are obtained via general solutions of Diophantine equations in the ring of proper and stable rational functions. The methodology covers both stable and unstable systems. The control objectives are obtained through divisibility conditions in this ring. Robustness of proposed algorithms can be studied through the infinity norm and sensitivity function. Several approximations of time delay terms and two control structures of controlled loop were considered. A scalar parameter was proposed as a tuning knob for influencing of stability, minimization of the sensitivity function and uncertainty evaluation. A Matlab-Simulink package was developed for automatic design and simulation of proposed algorithms.

Keywords: rings,time delays,SISO systems,robust control,PID controllers

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00028

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 165-170

Authors: Efrain Alcorta Garcia

Abstract: The problem of threshold selection for fault detection in nonlinear systems is considered. For the linear case the existing result requires of factorization of transfer function from perturbations to the output. In the nonlinear case a different approach is proposed in this work. Using ideas based on the concept of uniform ultimate boundedness a procedure to construct a residual generation is considered. The residual obtained is defined in such a way that a corresponding threshold can be defined in a natural form, in fact, as term in the residual equation. The proposed threshold can reduce the size of detectable faults and in this way the result is comparable to the existing for linear systems. The benefits of the approach are discussed.

Keywords: fault size,fault detection and isolation,observers,sliding mode

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00029

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 171-175

Authors: Efrain Alcorta Garcia; Felix Rafael Segundo Sevilla; Jose Ramon Vega Galaz

Abstract: This work is concerning with the problem of determinate if a fault has been originated in a subsystem of a electric network or in somewhere else. This problem is motivated for the legal aspect related to co-generation systems. To solve the problem an approach based on analytical redundancy is proposed. An electrical part of a co-generation system is used to show (via simulations) the success of the proposed approach.

Keywords: fault detection,redundancy,observers,power systems,co-generation

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00030

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 176-181

Authors: Lawrence Whitman; Olena Kolysnik; Don Malzahn

Abstract: Led by competition, companies strive for competitive advantage. Accepting the value-based holistic concept of a supply chain, organizations realize the importance of increased accuracy of communication flow and availability of information at any time and at any point of the supply network. Toward this end, companies are becoming more interested in automatic identification and data collection (AIDC) technology, such as radio frequency identification (RFID), which as part of a wide area network (WAN) can greatly increase supply chain visibility. This paper presents a decision analytic method for selecting appropriate AIDC technology in a warehouse application. Results in this particular application indicate that transaction costs are the primary determining factor.

Keywords: RFID,decision analysis,automatic identification

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00031

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 182-186

Authors: Luis M. Camarinha-Matos

Abstract: Collaborative networked organizations represent an important paradigm to help manufacturing companies cope with the challenges of market turbulence. Through collaboration, assisted by ICT, companies extend their "reach ability space" and participate in agile value creation networks. After a brief summary of the main concepts and collaborative forms, a survey of the state of the art and main research challenges are included for various focus areas. A list of emerging collaborative forms and their characterization are introduced. Among these forms, the customer involvement in innovation networks and networks of machines and sensors are discussed as particularly relevant for manufacturing.

Keywords: collaborative networked organizations,virtual organizations,virtual enterprises,professional virtual communities,virtual breeding environments

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00032

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 187-198

Authors: Hamideh Afsarmanesh; Luis M. Camarinha-Matos; Simon S. Msanjila

Abstract: Provision of mechanisms, methodologies, and functionalities to support Virtual organization Breeding Environments (VBEs) requires proper understanding of their requirements, development of representative models, thorough identification of adequate operating principles, and design and development of facilitating ICT-based tools. Addressing these aspects requires innovative solutions which are now being tackled within the FP6-IP ECOLEAD project. This paper addresses the key results achieved in the project for the area of VBEs.

Keywords: virtual organization,virtual organization breeding environment,collaborative network,trust,value system,competency management,ontology engineering,negotiation

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00033

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 199-206

Authors: David A. Guerra-Zubiaga; Samantha Rodriguez-Bueno; Ricardo Ramirez; Nathalie Galeano; Arturo Molina

Abstract: Some manufacturing enterprises are typically organized in clusters; a Virtual Breeding Environment (VBE) is aimed to group diverse institutions and their support organizations sharing a business interest, so they could later operate as a Virtual Organization (VO). A VBE is proposed as a strategy to integrate manufacturing Small and Medium Enterprises (SME). This paper gives an overview of VOs and international aerospace clusters. The proposed VBE model is explained through a case study done in the Mexican Aerospace Industry which provides a high level VBE model for the Aerospace Sector to capture the roles of the stake holders and to create VOs for integrated aircraft assembly process.

Keywords: VBE models,aerospace assembly process,virtual organizations,virtual design tools,aerospace clusters

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00034

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 207-211

Authors: Martin Ollus; Kim Jansson; Iris Karvonen

Abstract: A Virtual Organization (VO) consists of independent organizations collaborating for a common goal. Proper management is needed in order to achieve the objectives. The VO management has to enforce collaboration between independent partners with their own internal aims and own internal processes and management means. The paper presents results and solutions to support the management of virtual organizations in a dynamic environment.

Keywords: virtual organization,collaboration,decision support,inheritance,management systems,networks,performance monitoring,supervisory control

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00035

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 212-219

Authors: Peter Hofbauer; Josef Withalm; Walter Wolfel

Abstract: To establish a Supply Network for multi dimensional processes and models it is a very efficient and beneficial approach to focus first of all on the space of Supply Chains with several dimensions like time, process class, tiers, supply values, costs, etc. and use the method of superposition to map the Supply Chain space to the Supply Network space. Before that all business oriented issues as agreeing/aligning of business strategies and business models must be tackled and sufficient solved. It will be shown that a specific mapping of the space of Supply Chains to the space of Supply Networks can be done by use of ontological methods. An Ontology for a class of Supply Networks in relation to the underlying Supply Networks selects the appropriate Supply Chains used to compose the relevant subset of Supply Networks by superposition of the Supply Chains.

Keywords: business interoperability,business strategy (BS),business model (BM),business process (BP),collaboration,supply network,collaborative networked organizations (CNO),ontology,ontology web language (OWL),recursive model,resource description framework (RDF),semantic web,supply chain,virtual breeding environment (VBE),virtual organization (VO)

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00036

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 220-224

Authors: Alexander Mahl; Anatoli Semenenko; Jivka Ovtcharova

Abstract: For many enterprises recent significant challenges, such as: how best to design and innovate, how to understand constantly shifting customer needs, how to produce the products that meet those needs within tight budget and time constraints are of crucial importance. Forming networks through co-operation between different companies (virtual organizations) has become an important business strategy for SMEs to respond to these challenges. The paper discusses new approaches to support intercultural and cross-enterprise collaborations using a modular framework, which provides an integrated view of the relevant information on a data level and allows on the fly integration of external systems.

Keywords: cross-domain engineering,virtual organisations,interoperability between proprietary systems

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00037

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 225-230

Authors: Isai Roman-Ballesteros; Carlos F. Pfeiffer

Abstract: In this paper we present the application of a framework that gives the bases to model necessary behaviors and functions of robotic agents for surveillance, that can be used in the implementation of a Robotic surveillance system. The framework includes a formal dfinition of Surveillance, a hierarchy of alarm events, a model of the surveillance environment using a 2 dimension space tessellation, a definition of sensors and surveillance agents, a model of the interactions among the agents, and formal definitions of different kinds of surveillance patrolling. The framework is applied to a case of study for a surveillance system for Indoors Fire Detection, using a heterogeneous sensor platform. The relevant surveillance events are identified and formally defined as discrete events for the experimental case. The definition is mapped to a Petri Net that manages the events to detect possible alarm states. Experimental setup, implementation and conclusions about the case of study are shown.

Keywords: robotics,surveillance,fire detection

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00038

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 231-236

Authors: Nicolas Carrillo

Abstract: This paper presents a method to apply parametric modeling and speech processing techniques for the condition monitoring of complex rotating machines. Complex rotating machines are characterized by a big number of interdependent rotating parts, like motorized vehicles. The techniques presented in this paper have been developed to monitor the health status of complex rotating machines with a huge number of rotating parts where the isolation of specific vibration sources is difficult. This work was based on the condition monitoring of agricultural vehicles.

Keywords: autoregressive models,frequency signal analysis,vibration measurements,characteristic roots,classification,fault detection

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00039

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 237-242

Authors: David J. Broderick; David M. Bevly

Abstract: Nonparametric modeling of an unmanned ground vehicle is performed as part of a larger effort to develop online state estimation techniques based on artificial neural networks. The output of these networks will provide estimation of the states of the lateral dynamics. The architecture of these networks is considered in an effort to provided an adaptable, generalized network that provides accuracy comparble to that of traditional modeling techniques. The feedforward, fully-connected feedforward and cascade architectures are considered within. A Box-Jenkins model is developed to provided a parametric baseline as a means of comparison.

Keywords: nonparametric modeling,lateral vehicle dynamics,artificial neural network

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00040

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 243-248

Authors: Samuel Gonzalez Lopez; Fernando Orduna Cabrera

Abstract: Mixed model assembly lines can be found today in many industrial environments. Based on the problematic of knowing the optimal sequence in which each lot in an assembly line is going to be produced, this research considers a design to simulate a meta heuristic algorithm to obtain the optimal sequence that takes into account the maximization of the production lines capacity as well as in the use of components and other programming criteria. The methodology considered for the analysis was GRASP (Greedy Randomized Adaptive Search Procedures). A heuristic that minimizes the time of programming and allows the assembly lines to be scheduled in a real time. Based on feasible data, the obtained results of such simulation allow concluding that the lines of production were working in an optimal sequence.

Keywords: GRASP,optimal,metaheuristic

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00041

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 249-254

Authors: Noel Leon

Abstract: This paper presents a resume of the state of the art of Computer Aided Innovation tools and methods. The latest trends are presented and analyzed for deriving conclusions regarding the present status and the future of these emergent tools.

Keywords:

Digital Object Identifier (DOI): 10.3182/20071002-MX-4-3906.00042

Conference: IFAC Conference on Cost Effective Automation in Networked Product Development and Manufacturing

Location: Tecnologico de Monterrey, Mexico

Start Date: Tue Oct 02 2007 - End Date: Fri Oct 05 2007

Page Numbers: 255-262