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Relevant bibliographies by topics / Flexible manufacturing systems. Process control Warehouses

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Academic literature on the topic 'Flexible manufacturing systems. Process control Warehouses'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "Flexible manufacturing systems. Process control Warehouses"

1

Saygin, C., and S. E. Kilic. "Integrating Flexible Process Plans with Scheduling in Flexible Manufacturing Systems." International Journal of Advanced Manufacturing Technology 15, no. 4 (April 27, 1999): 268–80. http://dx.doi.org/10.1007/s001700050066.

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Wang, Jin Feng, Guang Feng Zhang, and Xian Zhang Feng. "Characteristics Analysis of Flexible Manufacturing Systems." Applied Mechanics and Materials 329 (June 2013): 172–75. http://dx.doi.org/10.4028/www.scientific.net/amm.329.172.

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For the rigid automatic line, although its production efficiency is high, but the flexible is less in the machining process, the machine and the assembly line need be shut down to adjust or replace for machine tools, jigs, tools, and tooling equipment, etc. When the work pieces for the machining is changed. It caused a heavy workload, wasting a lot of time. Flexible Manufacturing Systems consisted of unified control system, material handling system and a set of digital control processing equipment; it is the automation machinery manufacturing system to adapt the processing object transform. It has become one of the important means of manufacturing industry to obtain the advantages of market competitiveness. This paper gives the composition, algorithm and application of learning system concept, composition, and classification, characteristics of the flexible manufacturing system, the development overview and its application are induced in this paper.

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Niderla, Jonrad, Tomasz Rymarczyk, and Jan Sikora. "MANUFACTURING PLANNING AND CONTROL SYSTEM USING TOMOGRAPHIC SENSORS." Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska 8, no. 3 (September 25, 2018): 29–34. http://dx.doi.org/10.5604/01.3001.0012.5280.

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The article presents an idea of a production process control system. Advanced automation and control of production processes play a key role in maintaining competitiveness. The proposed solution consists of sensor networks for measurement process parameters, production resources and equipment state. The system uses wired and wireless communication, which gives possibility to acquisition data from existing in enterprise sensors and systems as well as acquisition data from new systems and sensors used to measure all processes, starting from production preparation to the final product. The solution contains process tomography sensors based on electrical capacitance tomography, electrical impedance tomography and ultrasound tomography. The use of tomographic methods enables to manage the intelligent structure of the companies in terms of processes and products. Industrial tomography enables observation of physical and chemical phenomena without the need to penetrate inside. It will enable the optimization and auto-optimization of design processes and production. Such solutions can operate autonomously, monitor and control measurements. All sensors return to the system continuous data about state of processes in some technologically closed objects like fermenters. Process tomography can also be used to acquisition data about a flow of liquids and loose ingredients in pipeline based on transport systems. Data acquired from sensors are collected in data warehouses in order to future processing and building the knowledge base. The results of the data analysis are showed in user control panels and are used directly in the control of the production process to increase the efficiency and quality of the products. Control methods cover issues related to the processing of data obtained from various sensors located at nodes. Monitoring takes place within the scope of acquired and processed data and parameter automation.

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Finke, G., and A. Kusiak. "Models for the process planning problem in flexible manufacturing systems." International Journal of Advanced Manufacturing Technology 2, no. 2 (May 1987): 3–12. http://dx.doi.org/10.1007/bf02601472.

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Jiang, Zengqiang, Mingcheng E, Yu Liu, Jianxin Liu, and Yu Li. "Study of manufacturing resource perception and process control of a radio-frequency-identification-enabled decentralized flexible manufacturing system." Advances in Mechanical Engineering 9, no. 1 (January 2017): 168781401668744. http://dx.doi.org/10.1177/1687814016687449.

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The fusion of mechatronics, communication, control, and information technologies has introduced new automation paradigms into the production environment. Plug-and-play flexible manufacturing systems will become suitable approaches in the future for the development of modular, flexible, and reconfigurable manufacturing systems, addressing the requirements of global markets. This article introduces a Petri Net model-driven methodology for the development, validation, and operation of a radio-frequency identification-enabled decentralized flexible manufacturing system. After analyzing the manufacturing processes and resources of a flexible manufacturing system, the manufacturing resources are classified into active and passive resources. Each active resource is equipped with a radio-frequency identification reader and each passive resource is banded with a radio-frequency identification tag. Real-time state and behavior logic models are built for manufacturing resources based on extended Petri Nets; the models are translated into XML and integrated with the manufacturing resources. In this fashion, each manufacturing resource becomes an autonomous agent, and it can make self-decisions and update its status through the twinned models. In this manner, automatic perception and process control are realized. Finally, the effectiveness and feasibility of the method are verified in an experimental system.

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Leckie, F. A., and R. M. McMeeking. "Processing and Manufacturing." Applied Mechanics Reviews 38, no. 10 (October 1, 1985): 1297–300. http://dx.doi.org/10.1115/1.3143697.

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The general problems associated with the mechanics of forming processes are discussed. Particular topics include: (i) processing of electronic devices; (ii) flexible robotic systems; (iii) manufacturing methods for modern materials; (iv) process control for optimal properties.

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Row, Ter-Chan, and Yen-Liang Pan. "Maximally permissive deadlock prevention policies for flexible manufacturing systems using control transition." Advances in Mechanical Engineering 10, no. 7 (July 2018): 168781401878740. http://dx.doi.org/10.1177/1687814018787406.

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Nowadays, many kinds of flexible manufacturing systems are used to process many complex manufacturing works due to their machine flexibility and routing flexibility. However, such competition (i.e. robots and machines) for shared resources by concurrent job processes can lead to the problem of a system deadlock. In existing researches, almost experts adopted place-based as controllers to solve the deadlock problems of flexible manufacturing systems whatever the concept of siphons or the reachability graph method are used. Among them, only the reachability graph ones can obtain maximally permissive live states. In this article, the authors try to propose one novel transition-based deadlock prevention concept to solve flexible manufacturing system’s deadlock problem. In addition, two algorithms are developed to support above concept. The experimental results indicate that the proposed policy not only can obtain maximally permissive controllers but also recover all original deadlock markings.

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Boukas, E. K., Q. Zhu, and Q. Zhang. "Piecewise deterministic Markov process model for flexible manufacturing systems with preventive maintenance." Journal of Optimization Theory and Applications 81, no. 2 (May 1994): 259–75. http://dx.doi.org/10.1007/bf02191664.

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Kathawala, Yunus. "Expert Systems: Implications for Operations Management." Industrial Management & Data Systems 90, no. 6 (June 1, 1990): 12–16. http://dx.doi.org/10.1108/02635579010004161.

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Several examples of successful expert systems applications are presented. Examples of expert systems as applied in process planning, operations planning, inventory control, process design, quality control and scheduling are covered, and the performance of these expert systems is described. Expert systems will become an essential part of computer‐integrated manufacturing (CIM) and flexible manufacturing systems (FMS) because they can perform several of the tasks mentioned above.

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SUGIMURA, Nobuhiro, and Koji IWAMURA. "2201 DYNAMIC INTEGRATED PROCESS PLANNING AND PRODUCTION CONTROL IN FLEXIBLE MANUFACTURING SYSTEMS WITH AUTONOMOUS AGENTS." Proceedings of Manufacturing Systems Division Conference 2007 (2007): 37–38. http://dx.doi.org/10.1299/jsmemsd.2007.37.

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Dissertations / Theses on the topic "Flexible manufacturing systems. Process control Warehouses"

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Dai, Bin. "Development of a free-ranging material handling system for manufacturing and warehouse application /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?IELM%202009%20DAI.

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Hoffman, Albert Jakobus. "IEC 61131-3-based control of a reconfigurable manufacturing subsystem." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95927.

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Thesis (MEng)-- Stellenbosch University, 2014.
ENGLISH ABSTRACT: The South African industry has an increasing need for manufacturing automation. However, the classical form of automation is not cost effective for the low volumes and high variance of products that are produced there. The industry may use the reconfigurable manufacturing system (RMS) concept to improve production of its products. However, industry has been unwilling to adopt the reconfigurable manufacturing systems developed in recent research projects. Due to industry’s hesitance to adopt the control platforms on which reconfigurable manufacturing systems are currently based, the focus of the thesis is on creating a reconfigurable control system using industry accepted technologies. This research focused on evaluating a Beckhoff embedded PC’s suitability as a station controller that controls a reconfigurable subsystem in an RMS. The control system for the station controller was developed using only the IEC 61131-3 programming languages and the Beckhoff programming software. This control system was evaluated by using it to control a station that is responsible for testing a circuit breaker’s tripping current and time. The developed control system was based on the ADACOR architecture because of its optimisation capabilities that were necessary to keep the cycle time of the station as low as possible. The design and implementation of the physical configuration and control system of the station is described in this thesis. The station was designed to meet the requirements of both an RMS and the case study. Because of the limitations of the IEC 61131-3 programming languages, dynamic instantiation of holons is not possible and a method was developed to simulate dynamic task holons. By making use of the embedded PC’s ability to run multiple PLCs at the same time, each type of holon was run in its own PLC thread. The developed control system and station was evaluated by conducting experiments using a laboratory test setup. The evaluation of the developed control system in this thesis proved that an RMS can be created, in the context of station control, using IEC 61131-3 and industry accepted technologies, if a hardware platform is used that allows multiple PLCs to be run in individual threads. The control approach that was created in this thesis can be used to create station control systems that offers optimised cycle times, the benefits of an RMS and the benefits of industry accepted technology.
AFRIKAANSE OPSOMMING: Die Suid-Afrikaanse bedryf het 'n toenemende behoefte aan geoutomatiseerde vervaardiging. Die klassieke vorm van outomatisasie is egter nie koste effektief vir die lae volumes en hoë variansie van produkte wat in Suid Afrika geproduseer word nie. Die bedryf kan moontlik die konsep van 'n herkonfigureerbare vervaardigingstelsel (HVS) gebruik om vervaardiging te outomatiseer. Die bedryf is egter nie bereid om die herkonfigureerbare vervaardigingstelsels wat in onlangse navorsingsprojekte ontwikkel is, te aanvaar nie. As gevolg van die bedryf se huiwering om die beheerplatforms waarop herkonfigureerbare vervaardigingstelsels tans gebaseer word, te aanvaar, is die fokus van die tesis om industrie-aanvaarde tegnologie te gebruik om ‘n herkonfigureerbare beheerstelsel te skep. Hierdie navorsing fokus op die evaluering van 'n “Beckhoff embedded PC” se geskiktheid as 'n stasiebeheerder van 'n herkonfigureerbare substelsel in 'n HVS. Die beheerstelsel vir die stasie beheerder is ontwikkel deur slegs van die IEC 61131-3 programmeringstale en die Beckhoff programmering-sagteware gebruik te maak. Hierdie beheerstelsel is geëvalueer deur dit op die beheer van 'n stasie wat verantwoordelik is vir die toets stroombrekers, toe te pas. Die beheerstelsel was gebaseer op die ADACOR argitektuur as gevolg van die optimeringsvermoëns wat noodsaaklik was om die siklustyd van die stasie so laag as moontlik te hou. Die ontwerp en implementering van die fisiese konfigurasie en beheerstelsel van die stasie word in hierdie tesis beskryf. Die stasie was ontwerp om aan die vereistes van beide 'n HVS en die gevallestudie te voldoen. As gevolg van die beperkings van die IEC 61131-3 programmeringstale, is dinamiese instansiëring van holons nie moontlik nie, en 'n metode is ontwikkelom dinamiese taakholons na te boots. Deur gebruik te maak van die "embedded PC" se vermoë om meervoudige PLCs terselfdetyd te hanteer, kan elke holon tipe in sy eie "thread" loop. Die ontwikkelde stelsel en die stasie is geëvalueer in 'n laboratorium deur middel van eksperimente. Die evaluering van die beheerstelsel in hierdie tesis bewys dat 'n HVS geskep kan word, in die konteks van ‘n stasiebeheerder, deur IEC 61131-3 en tegnologie wat wyd in die industrie aanvaar word, te gebruik mits die hardeware-platform wat gebruik word toelaat dat verskeie PLCs terselfde tyd op een beheerder kan loop. Die beheerbenadering wat geskep is in hierdie tesis kan gebruik word om stasie- beheerstelsels te skep wat optimale siklus tye, die voordele van 'n HVS en die voordele van industrie-aanvaarde tegnologie bied.

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Books on the topic "Flexible manufacturing systems. Process control Warehouses"

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In-process quality control for manufacturing. New York: M. Dekker, 1989.

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Barkman, W. E. In-process quality control for manufacturing. New York: Dekker, 1989.

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The global manufacturing revolution: Product-process-business integration and reconfigurable systems. Hoboken, N.J: Wiley, 2010.

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Renn, Werner. Struktur und Aufbau prozessnaher Steuergeräte zur Verkettung in flexiblen Fertigungssystemen. Berlin: Springer-Verlag, 1986.

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Cyklis, Jerzy. Modelowanie procesów dyskretnych w elastycznych systemach produkcyjnych. Kraków: Politechnika Krakowska, 1995.

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Krajowa Konferencja Automatyzacji Dyskretnych Procesów Przemysłowych (7th 1990 Kozubnik, Poland). VII Krajowa Konferencja Automatyzacji Dyskretnych Procesów Przemysłowych: Kozubnik k. Porąbki, 1990.09.09-12. Gliwice: Politechnika Śląska, 1990.

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Krajowa Konferencja Automatyzacji Dyskretnych Procesów Przemysłowych (9th 1994 Kozubnik, Poland). IX Krajowa Konferencja Automatyzacji Dyskretnych Procesów Przemysłowych: Referaty sekcji II, III, IV, Kozubnik k. Porąbki, 14-17.09.1994 r. Gliwice: Wydawn. Politechniki Śląskiej, 1994.

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Koren, Yoram. Global Manufacturing Revolution: Product-Process-Business Integration and Reconfigurable Systems. Wiley & Sons, Incorporated, John, 2010.

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Koren, Yoram. Global Manufacturing Revolution: Product-Process-Business Integration and Reconfigurable Systems. Wiley & Sons, Incorporated, John, 2010.

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Koren, Yoram. Global Manufacturing Revolution: Product-Process-Business Integration and Reconfigurable Systems. Wiley & Sons, Incorporated, John, 2011.

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Book chapters on the topic "Flexible manufacturing systems. Process control Warehouses"

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Derebail, A., H. Cho, and R. Wysk. "Process plan representation for shop floor control." In Computer control of flexible manufacturing systems, 379–404. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1230-7_14.

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Veron, M., J. Richard, and E. Bajic. "In-process quality control and corrective feedback in a flexible manufacturing cell." In Proceedings of the 5th International Conference on Flexible Manufacturing Systems, 75–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-38009-3_8.

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"Flexible Manufacturing Systems." In In-Process Quality Control for Manufacturing, 279–88. CRC Press, 1989. http://dx.doi.org/10.1201/b15229-45.

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NACSA, J., and G. L. KOVÁCS. "STEPS TOWARDS REAL-TIME CONTROL USING KNOWLEDGE BASED SIMULATION OF FLEXIBLE MANUFACTURING SYSTEMS." In Computer Software Structures Integrating Ai/kbs Systems in Process Control, 71–74. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-08-042360-9.50014-2.

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Strasser, Thomas, Alois Zoitl, and Martijn Rooker. "Zero-Downtime Reconfiguration of Distributed Control Logic in Industrial Automation and Control." In Reconfigurable Embedded Control Systems, 55–81. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-086-0.ch003.

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Future manufacturing is envisioned to be highly flexible and adaptable. New technologies for efficient engineering of reconfigurable systems and their adaptations are preconditions for this vision. Without such solutions, engineering adaptations of Industrial Process Measurement and Control Systems (IPMCS) will exceed the costs of engineered systems by far and the reuse of equipment will become inefficient. Especially the reconfiguration of control applications is not sufficiently solved by state-of-the-art technology. This chapter gives an overview of the use of reconfiguration applications for zero-downtime system reconfiguration of control applications on basis of the standard IEC 61499 which provides a reference model for distributed and reconfigurable control systems. A new approach for the reconfiguration of IEC 61499 based control application and the corresponding modeling is discussed. This new method significantly increases engineering efficiency and reuse in component-based IPMCS.

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Gertler, Meric S. "Proximity, Organization, and Culture." In Manufacturing Culture. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198233824.003.0010.

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Since the late 1980s a growing number of geographers and other social scientists have chronicled the apparent rise of post-Fordist economic systems (Scott and Storper 1987; Schoenberger 1988; Harvey 1989; Storper and Walker 1989; Boyer 1990; Storper 1997). These systems are said to employ a flexible approach to production reflected in employment relations, the organization of work within firms, and the broader social division of labour (Cooke and Morgan 1998). To some, the heart of this transformation lies in the rise of a new set offerees of production (Walker 1994). In particular, they point to a new set of flexible process technologies whose programmable properties offer producers prospects of great versatility, limited downtime, unparalleled precision, and superior quality. The same technologies are said to hold the potential to unleash the creative potential of workers, and to compel manufacturers to establish a new regime of co-operation on the shopfloor (Florida 1991). Despite the popularity of such arguments, their unqualified acceptance has not been universal. A critical literature has arisen which, among other things, questions the pervasiveness of such practices, especially in locations outside the paradigmatic flexible production regions (Gertler 1988; 1992; Sayer 1989; Pudup 1992). The evidence reviewed in Ch. 2 attests that, while rates of adoption of flexible technologies such as computerized numerical control (CNC) are reasonably high amongst manufacturers in countries such as the United States, Great Britain, and Canada, many firms in these countries have experienced considerable difficulty in trying to implement such technologies effectively (Jaikumar 1986; Beatty 1987; Meurer, Sobel, and Wolfe 1987; Kelley and Brooks 1988; Turnbull 1989; Oakey and O’Farrell 1992). Furthermore, the discussion in Ch. 2 also shows that there is an apparent regularity to the geography of technology adoption difficulty that is highly suggestive of its roots. Many of these implementation difficulties seem to arise in older, mature industrial regions, where manufacturing firms are far removed from the major production sites of the new flexible production technologies. Increasingly, the leading producers of these process technologies are to be found in such countries as Germany, Japan, and Italy, while once-dominant American machinery producers have seen their market shares drop significantly, both at home and abroad (Graham 1993).

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Conference papers on the topic "Flexible manufacturing systems. Process control Warehouses"

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Martinov, Georgi, and Artem Kovaleko. "Additive Process Equipment Control System for Integration into a Flexible Manufacturing System." In 2019 XXI International Conference Complex Systems: Control and Modeling Problems (CSCMP). IEEE, 2019. http://dx.doi.org/10.1109/cscmp45713.2019.8976558.

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Ruiz, M., Diego Cazorla, Fernando Cuartero, and J. Pardo. "Specification and performance evaluation of Flexible Manufacturing Systems using a Bounded True Concurrent Process Algebra." In 2006 International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (CIMCA'06). IEEE, 2006. http://dx.doi.org/10.1109/cimca.2006.200.

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Kim, David Donghyun, and Brian Anthony. "Design and Fabrication of Desktop Fiber Manufacturing Kit for Education." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5226.

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Fiber manufacturing process has been an integral part of the optical fiber communications. The optical fiber manufacturing processes involve high precision quality control and large volume production. However, the conventional fiber drawing manufacturing technologies are not flexible and highly specialized. This prevents innovative ideas such as flexible fiber manufacturing and small scale prototypes. A desktop fiber manufacturing kit was designed and tested. The experimental results indicate that diameter can be controlled within 0.02mm with standard deviation of 0.120mm when target diameter was set to be 0.5mm. Proportional control can be used to adjust fiber diameters.

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Hassan, Dssama M., and Douglas M. Jenkins. "Flexible Manufacturing of Aircraft Engine Parts." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-229.

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GE Aircraft Engines, a major supplier of jet engines for commercial and military aircraft, has developed a fully integrated manufacturing facility to produce aircraft engine components in flexible manufacturing cells. This paper discusses many aspects of the implementation including process technologies, material handling, software control system architecture, socio-technical systems and lessons learned. Emphasis is placed on the appropriate use of automation in a flexible manufacturing system.

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Chen, Brian, and Jen-Yuan (James) Chang. "Investigation of Flexible Magnetic Medium Microstructure Behavior Under Implementation of Roller Leveling Process." In ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/isps-mipe2018-8582.

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The aim of this paper is to investigate the effect of roller leveling process on the behavior of microstructure in flexible magnetic medium. Linear magnetic encoder is a highly precise measuring device that required accurate quality control during manufacturing. Previous studies have demonstrated the feasibility of roller leveling application to enhance the manufacturing of flexible magnetic medium. Mechanical shape defects in magnetic medium occurred during manufacturing due to environmental conditions can be eliminated through roller leveling process. In this paper, further steps were taken to understand the effect of roller leveling process in the microstructural level. From experimental results, it demonstrates that roller leveling process, a type of cyclic loading process, would not encourage crack growth if cracks were not initiated prior to leveling process. In addition to removing mechanical shape defects, understanding roller leveling process in magnetic medium application through investigating microstructure behavior has implications toward the fabrication quality of flexible magnetic medium.

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Gonzalez, David, Jose Garcia, and Brittany Newell. "3D Printed Segmented Flexible Pneumatic Actuator." In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5645.

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Abstract Soft actuators have been studied and analyzed as a new solution for soft robotic technologies. These types of actuators have many advantages due to their predictable deformations and their ease of control, enabling them to hold and move delicate objects performing complex movements in confined spaces. Soft actuators can be made using different manufacturing processes, but the most common is mold casting. However, this manufacturing process involves several steps, increasing the manufacturing time and hindering changes in the design. This paper presents a novel design of a 3D printed soft pneumatic actuator based on additive manufacturing, achieving design versatility and performance. The produced actuator has seven that can be individually controlled. The actuators were made using fused deposition modeling (FDM) technology in one continuous process and without support material. The mechanical performance of the soft actuators was demonstrated, analyzing the deformation in the z-axis based on input pressure.

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Yuan, Chengyin, and Placid Ferreira. "An Integrated Environment for the Design and Control of Deadlock-Free Flexible Manufacturing Cells." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61213.

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At the enterprise level, manufacturing organizations are faced with accelerating technological cycles, global competition and an increasingly mobile work force. The flexibility of the enterprise and its ability to respond to various customer demands governs the competitiveness of the enterprise to the changes in its market and in the society in which it operates. It has been recognized for many years that flexibility on the enterprise floor can always be achieved if the resulting cost of product and process changeovers and its operations are not considered. However, with the increasing competitive pressures on today’s manufacturing enterprise, a flexible-manufacturing environment must be achieved at relatively low cost and high work-force productivity while maintaining a competitive advantage. To accomplish this goal, the manufacturing enterprise must be able to be reconfigured and verified with an increased level of automation that is scalable and flexible to meet diverse product demands quickly and economically. In this paper, we will introduce the recent research work on developing an integrated rapid prototyping environment, EMBench [22, 23], which can provide design, control configuration, simulation and deployment services for flexible manufacturing systems. This rapid prototyping environment has its own user-friendly GUI (Graphical User Interface) that allows user to issue various commands to the controller at different layers, from the simple joint servo to the complex manufacturing cell. In this paper, we also propose the implementation diagram for the controller of manufacturing cells that consists of scheduler, dispatcher, real-time database and structural control policy. All these internal components are responsible for storing system configuration, optimizing processing plan, releasing appropriate command, etc. We also present the idea of cell model and explore its characteristics and behaviors as well as the resource and workstation models. All above modules and architecture are developed using IEC-61499 function blocks that support scalable expansion and modular design. To demonstrate our theoretical achievements, we have developed various IEC-61499 function blocks to integrate various resources on the enterprise shop floor and achieve flexibility at a low cost. This software environment facilitates a modular, component-based mechanical and control design, simulating and prototyping tool for shop floor control.

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Lu, Youwei, and Prabhakar R. Pagilla. "Modeling the Effects of Heat Transfer Processes on Material Strain and Tension in Roll to Roll Manufacturing." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-4075.

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This paper develops governing equations for material strain and tension based on a temperature distribution model when the flexible materials (often called webs) are transported on rollers through heat transfer processes within roll-to-roll (R2R) processing machines. Heat transfer processes are employed widely in R2R systems that contain process operations such as printing, coating, lamination, etc., which require heating/cooling of the moving web material. The heat transfer processes introduce the thermal expansion/contraction of the material and changes in the elastic modulus. Thus, the temperature distribution in the moving material affects the strain distribution in the material. Because of change in strain as well as modulus as a function of temperature, tension in the material resulting from elastic strain is also affected by heating/cooling of the web. To obtain the temperature distribution, two basic heat transfer modes are considered: web wrapped on a heat transfer roller and the web span between two consecutive rollers. The governing equations for strain is then obtained using the law of conservation of mass considering the temperature effects. Subsequently, a governing equation for web tension is obtained by assuming the web is elastic with the modulus varying with temperature; an average modulus is considered for defining the constitutive relation between web strain and tension. Since it is difficult to obtain measurement of tension using load cell rollers within heat transfer processes, a tension observer is designed. To evaluate the developed governing equations, numerical simulations for a single tension zone consisting of a heat transfer roller, a web span, and a driven roller are conducted. Results from these numerical model simulations are presented and discussed.

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Khakpour Nejadkhaki, Hamid, and John F. Hall. "A Flexible Wind Turbine Blade With an Actively Variable Twist Distribution to Increase Region 2 Efficiency: Design and Control." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5282.

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A method for designing and controlling a novel wind turbine blade is presented. The blade is modular, flexible, and additively manufactured. Conventional blades are monolithic and relatively stiff. The conventional method for improving aerodynamic efficiency is through generator torque control. The anisotropic nature of the additive manufacturing (AM) process has the potential to create a flexible blade with a low torsional-to-longitudinal-stiffness ratio. This enables new design and control capabilities that could be applied to the twist angle distribution (TAD). Simulation results suggest this can increase the aerodynamic efficiency during Region 2 operation. The suggested blade design includes a rigid spar with flexible AM segments that form the surrounding shells. The stiffness of each individual segment and the actuator placement define the TAD. In practice, the degree of flexibility for each segment will be established through the design and AM processes. These variations in compliance allow the blade to conform to the desired set of TAD geometries. The proposed design process first determines the TAD that maximizes the aerodynamic efficiency in Region 2. A mechanical design algorithm subsequently locates a series of actuators and defines the stiffness ratio between the blade segments. The procedure is optimized to minimize the amount of variation between the theoretical TAD and that which is obtained in practice. The free-shape TAD is also determined in the final design step. The geometry is chosen to minimize the amount of deflection needed to shape the TAD as it changes with Region 2 wind speed. A control framework is also developed to set the TAD in relation to wind speed. A case study demonstrates the capability of the proposed method. The simulation results suggest that a TAD controlled through five actuators can achieve the full range of required motion. Moreover, the design solution can increase the efficiency at cut-in and rated speeds up to 3.8% and 3.3%, respectively.

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Sherehiy, Andriy, Andres Montenegro, Danming Wei, and Dan O. Popa. "Adhesive Deposition Process Characterization for Microstructure Assembly." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-63929.

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Abstract Recent advancements in additive manufacturing such as Direct Write Inkjet printing introduced novel tools that allow controlled and precise deposition of fluid in nano-liter volumes, enabling fabrication of multiscale structures with submillimeter dimensions. Applications include fabrication of flexible electronics, sensors, and assembly of Micro-Electro-Mechanical Systems (MEMS). Critical challenges remain in the control of fluid deposition parameters during Inkjet printing to meet specific dimensional footprints at the microscale necessary for the assembly process of microscale structures. In this paper we characterize an adhesive deposition printing process with a piezo-electric dispenser of nano-liter volumes. Applications include the controlled delivery of high viscosity Ultraviolet (UV) and thermal curable adhesives for the assembly of the MEMS structures. We applied the Taguchi Design of Experiment (DOE) method to determine an optimal set of process parameters required to minimize the size of adhesive printed features on a silicon substrate with good reliability and repeatability of the deposition process. Experimental results demonstrate repeatable deposition of UV adhesive features with 150 μm diameter on the silicon substrate. Based on the observed wettability effect of adhesive printed onto different substrates we propose a solution for further reduction of the deposit-substrate contact area for microassembly optimization.

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