http://www.ifac-papersonline.net/ en Copyright 12:27 PM Thursday 11, 2010 IFAC-PapersOnline http://www.ifacpapersonline.com 12:27 PM Thursday 11, 2010 12:27 PM Thursday 11, 2010 ET webmaster@ifac-papersonline.net webmaster@ifac-papersonline.net http://www.ifac-papersonline.net/Detailed/38960.html 04:00 PM Wednesday 31, 1969 In the recent evolution of production control systems, the emergence of decentralized systems capable of dealing with the rapid changes in the production environment better than the traditional centralized architectures has been one of the most significant developments. The agent-based and holonic paradigms symbolize this approach, and ADACOR holonic control architecture is a successful example of such a system. In this paper, authors discusses the current challenges and the way to go in the direction of new, reconfigurable, evolvable and ubiquitous systems, able to respond to current production environment demands and variability. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38972.html 04:00 PM Wednesday 31, 1969 The paper presents a modern solution for controlling the industrial machines and the manufacturing process in a fodder producing factory. The automation system was chosen such as to allow correct control of whole plant without the need of a computer, using a single programmable logic controller (PLC). Also some interesting software solutions, for controlling some older devices that could not be replaced because of high cost, are presented. Production quality results and future development are also presented. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38984.html 04:00 PM Wednesday 31, 1969 This paper describes an uncalibrated visual-force control system which does not require any kinematic calibration to develop the task. An important aspect of these kinds of control systems is the necessity to maintain the coherence between the control actions obtained from each sensorial system. To do so, the paper proposes to modify the image trajectory from the information obtained from the force sensor by using the concept of force-image interaction matrix. This matrix relates changes in the image space with changes in the interaction forces. In order to estimate the value of this matrix this paper suggests the use of a Gauss-Newton method. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38949.html 04:00 PM Wednesday 31, 1969 This paper describes the DSOPP platform being built at Dalhousie University to simulate intelligent order promising protocols using an agent-based approach. The unique feature of this platform is that it supports order promising in a distributed network with several decision making stages, each representing a supply chain network. Moreover, promising of orders in each of the stages is based on optimization. The platform will be used to compare and contrast several different order promising protocols. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38976.html 04:00 PM Wednesday 31, 1969 To analyse and evaluate the different types of COllaborative DEmand & Supply NETworks (CODESNET) is becoming mandatory to pursue effective industrial politics of development for Small-Medium Enterprises (SMEs). The analysis of complex industrial bodies, like clusters of cooperating enterprises, must be based on a formal unambiguous model. The model by which all analyses under development within the CODESNET project are driven, describes a cluster of SMEs in terms of its structure, its organisation and its interactions with the external socio-economic context. From these viewpoints it is possible to represent how efficiently the multi-SME industrial body can operate, be managed and interact with the external markets. The paper aims to give a comprehensive presentation of the SME network model and the "analysis road map" developed in the EU-funded CODESNET project. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38940.html 04:00 PM Wednesday 31, 1969 http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38977.html 04:00 PM Wednesday 31, 1969 This work presents the design of a new wireless sensor called the "WIRELESS SMART SENSOR," which works as a data capturing system with and identifying component. The planned sensor uses Radio Frequency Identification Technology (RFID), a communication and data transfer system. It has been specially designed to assure the traceability of goods which, because of their nature, require specific transportation and storage conditions (Food or perishable substances, products sensitive to environmental conditions, etc...). http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38954.html 04:00 PM Wednesday 31, 1969 The goal of the paper is to present a model and algorithms for optimizing the production capacity taking into consideration quality control. The production capacity optimization problem is presented as a task of multi-criterion optimization with discrete, non-linear goal functions. The proposed solution enables finding an optimal configuration of the flow production system which is interpreted as a queuing network. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38968.html 04:00 PM Wednesday 31, 1969 This paper presents a machine vision system for on-line inspection of large stamped car parts. The vision system includes a CCD camera and an illumination device that permit to obtain two images of the same zone illuminated from two different directions. The acquired images are fused using an energy function in order to eliminate the spurious features originated by glints and shadows of the metallic surface. The defects, if they are present, remain in the fused image and can easily be pointed out. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38966.html 04:00 PM Wednesday 31, 1969 This paper presents a vision-sensor-planning application for quality inspection of lens surfaces of car lighting systems. Using the CAD information, expert knowledge of the inspected parts and the camera model, the system automatically synthesizes optimal camera views. The optimal camera views are achieved by a hierarchical genetic algorithm. Results demonstrate the effectiveness of the vision-sensor-planning system. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38946.html 04:00 PM Wednesday 31, 1969 In manufacturing systems, production planning and control performs a key function. This paper discusses the production planning and control (PPC) aspects of a Bio-Inspired Holonic Manufacturing Execution Systems. The PPC system in such a bio-inspired system has a design that distinguishes it from more conventional systems. This design renders the PPC system robust and responsive when facing changes and disturbances that occur on a shop floor. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38982.html 04:00 PM Wednesday 31, 1969 The paper gives an overview of a novel innovative vision system embedded in manufacturing applications. The system is able to handle (1) unknown products, (2) in-available data, (3) large disturbances and deviations (shape, position, or even part type) and (4) even very small lot-sizes. The concept foresees a full integration into production technology. Products to be processed are past through a flexible 3D sensor cell. The proposed system adapts its sensor system to arbitrary product geometry and builds a 3D world model of the task space using a fast and robust 3D object recognition system. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38939.html 04:00 PM Wednesday 31, 1969 http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38945.html 04:00 PM Wednesday 31, 1969 Flexible manufacturing systems based on robotic arms are becoming more used in machining due to the increase of system performance and the low cost of equipments compared with conventional CNCs. Normally, CAM software is developed focusing only in standard machines. This paper presents the customization and programming into an standard CAD CAM software to manage flexible manufacturing cells containing robotic systems, CNC machines and any other accessories. The paper shows a solution to manage all the process from CAD modelling to native machine code generation considering an integrated environment for simulating all the process. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38938.html 04:00 PM Wednesday 31, 1969 http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38948.html 04:00 PM Wednesday 31, 1969 The subject matter of the study are the automated guided vehicle (AGV) operation synchronisation mechanisms in flexible manufacturing systems, enabling determination of the travel schedules via some preset travelling route intervals. In many practical cases transport operations are repetitive. For this type of systems the transport processes can be modelled as a system of cyclic concurrent processes sharing common resources with mutual exclusion. The processes examination has to guarantee the collision-free and deadlock free AGVs flow. In this paper the problem of determination of the rules coordinating access of the vehicles to the shared travel route intervals, ensuring the collision-free and deadlock-free execution of the repetitive processes was reduced to determination of the sufficient conditions. In particular the problem of searching for a pair is defined in the form of the constraint satisfaction problem (CSP)and is solved with use of the logic programming techniques. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38983.html 04:00 PM Wednesday 31, 1969 This paper presents a sensor-based concept to carry out short series production with robots. Intelligent sensing extends our approach from earlier reported work towards truly flexible robotic production. A modern industrial robot provides an excellent, easy to adjust platform to flexible, reconfigurable production. In our concept we consider four main steps: sensing planning, motion planning, calibration and on-line adaptation. All these are critical steps in flexible robot-based manufacturing. These steps are explained in details with pilot examples cases in laboratory or industrial environments. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38947.html 04:00 PM Wednesday 31, 1969 In industrial environments, disturbance handling is a major issue in reconfigurable manufacturing control systems, supporting the fast, effective and efficient response to the occurrence of unexpected disturbances. Those disturbances usually degrade the performance of the system, causing the loss of productivity and business opportunities, which are crucial roles to achieve competitiveness. This paper proposes an agent-based disturbance handling architecture that distributes the disturbance handling functions by several autonomous control units and considers the main types of shop floor disturbances that have impact at planning and scheduling level. The proposed architecture also integrates a prediction component, transforming the traditional "fail and recover" practices into "predict and prevent" practices. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38951.html 04:00 PM Wednesday 31, 1969 In the paper the combined routing-scheduling problem, which consists in scheduling of tasks for moving executors, is considered. The case with non-preemptive and independent tasks, unrelated executors as well as interval processing times to minimize the makespan is investigated. The robust scheduling problem based on the relative regret is formulated. The solution algorithm of polynomial computational complexity, which uses simulated annealing approach, is presented. The results of simple numerical experiments are given. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38941.html 04:00 PM Wednesday 31, 1969 Assembly automation is a classical field and well known since the late seventies. Disassembly automation is quite new and comes up approximately 15 years ago. In this paper some ideas and recent research results dealing with "intelligent" automation of assembly and disassembly are presented. Assembly automation is a classical application field of robotics today. Robots will be more and more included in assembly cells. The flexibility of these cells offers possibilities to automate assembling and disassembling of small and medium series. An approach for increasing the efficiency of disassembly cells - disassembly families - discussed. First ideas to introduce mobile robots in disassembly are presented. The premises and new direction in development of assembly and disassembly systems conclude the paper. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38975.html 04:00 PM Wednesday 31, 1969 Solder paste screen printing is the first and very critical stage of manufacturing in an SMT production line of printed circuit boards (PCBs). Many defects can be eliminated with proper paste inspection. Conventional inspection method would depend an image acquired from a camera mounted from the top. This 2D inspection of solder based on images is fast but is limited to defect such as bridge or no solder. Defects related to the volume of the printed solder paste or unevenness of the paste cannot be treated from a top image. The proposed method of this paper would involve the use of special directional LED lighting from the side. A sequence of four images is acquired and image processing is carried out for the edge information of the printed solder paste. The proposed method can handle other types of defects that cannot be treated by conventional lighting images. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38971.html 04:00 PM Wednesday 31, 1969 Most shipyard repair operations are not currently automated. A huge number of constraints make maintenance operations such as hull blasting very difficult to automate. There are partial solutions like blasting turbines and ultrahigh pressure water blasting units for vertical walls. This paper details a proposal of incremental development using a robotic teleoperation platform for hull blasting operations funded by a European Consortium of shipyards, equipment manufacturers and research centres. Such system offers an integral solution for hull preparation complying with requirements of efficiency, worker safety and environmental care. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38973.html 04:00 PM Wednesday 31, 1969 This paper proposes a STEP-compliant extension of the AP-238 information model to support CNC manufacturing monitoring capabilities. New nc_functions for AP- 238 are proposed to provide online machining information and support the development of AP-238 close loop manufacturing, involving AP-238 CAM systems and AP-238 NC interpreters. As a sample case, the paper focuses on the sequential supervision of machining operation time with STEP-NC functions, before addressing other manufacturing variables and more advanced close-loop machining strategies. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38967.html 04:00 PM Wednesday 31, 1969 In this paper a new robotized inspection system for PCBs is presented. Electrical and optical tests are carried out by the system, using four mobile probes where two micro CCD cameras are mounted. This new approach becomes a costless and quick setup alternative to the currently used spiked beds for those applications of prototyping developments where maximum flexibility is demanded for the inspection system. A computer vision system provides the capacity for optical inspections where visual tests, like part presence/absence or polarity, can be performed. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif http://www.ifac-papersonline.net/Detailed/38958.html 04:00 PM Wednesday 31, 1969 The main goal of this paper is to describe a multiagent based control architecture applied to a complex assembly cell in order to prove that the multiagent paradigm is a good alternative to develop agile control systems. By implementing the architecture we want to prove that it can be used for adequately solve requirements of: modularity, promote configuration rather than reprogramming, support various products simultaneously, and legacy controllers integration. http://www.ifac-papersonline.net/static/luna/images/ifac/icon-download.gif