Author
Sivaram Balasubramanian
Other affiliations: University of Calgary
Bio: Sivaram Balasubramanian is an academic researcher from Rockwell Automation. The author has contributed to research in topics: Real-time Control System & Network packet. The author has an hindex of 19, co-authored 45 publications receiving 1141 citations. Previous affiliations of Sivaram Balasubramanian include University of Calgary.
Papers
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TL;DR: In this article, a bidding-based approach to the integration of computer-aided design, process planning and real-time scheduling is described, where a product is represented in a STEP model with detailed design and administrative information including design specifications, batch size, and due dates.
132 citations
Patent•
27 Apr 2005TL;DR: In this article, a method and circuit for precisely synchronizing clocks in separate nodes on a communication network is provided by adjusting timestamps and related data in network messages, allowing a daisy-chain connection of the nodes and will forward time synchronization frames while accounting for delays in a manner that does not use boundary clocks, but does not depart from the IEEE 1588 standard protocol.
Abstract: A method and circuit for precisely synchronizing clocks in separate nodes on a communication network is provided by adjusting timestamps and related data in network messages. The circuit will allow a daisy-chain connection of the nodes and will forward time synchronization frames while accounting for delays in a manner that does not use boundary clocks, but does not depart from the IEEE 1588 standard protocol. The delays will be added on the fly to synchronization packets and the IP checksum and frame CRC will be adjusted. Deterministic data delivery and redundant data paths are also provided in a full duplex Ethernet network.
110 citations
TL;DR: An integrated and uniform event-driven control architecture is specified for various functional levels of the metamorphic control system, which utilises the emerging International Electrotechnical Commission function block standard for industrial process measurement and control systems to specify the requisite behaviour of distributed control software components (agents).
93 citations
Patent•
06 Dec 2004TL;DR: An operating system for distributed industrial controllers ensures the completion of enrolled application programs within a predetermined time span as is required for robust industrial control by preallocating dynamic and static hardware resources on a per application basis and in a manner that ensures execution of the application within the necessary time constraints.
Abstract: An operating system for distributed industrial controllers ensures the completion of enrolled application programs within a predetermined time span as is required for robust industrial control by preallocating dynamic and static hardware resources on a per application basis and in a manner that ensures execution of the application within the necessary time constraints. Portions of the distributed operating system may be distributed at particular hardware resources to provide necessary modeling for those hardware resources in making the commitments to resource bandwidths.
75 citations
Patent•
30 Sep 1999TL;DR: In this paper, an interrupt handler is provided for a real-time control system that prevents interrupts which occur asynchronously with respect to control tasks from upsetting guarantees of timely execution of the control tasks.
Abstract: An interrupt handler is provided for a real-time control system that prevents interrupts which occur asynchronously with respect to control tasks from upsetting guarantees of timely execution of the control tasks. For interrupts associated with the communication of messages between portions of a control task over the distributed system, the interrupts are converted to proxy tasks that may be scheduled like any task in a multitasked-operated system. More generally, interrupts may be assigned to a predetermined interrupt window being a portion of the total processing bandwidth of the processor. In pre-allocating the processor bandwidth to the control tasks, this interrupt window may be subtracted out thereby guaranteeing adequate bandwidth for both interrupt processing and user tasks.
63 citations
Cited by
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TL;DR: Some key issues in developing agent-based manufacturing systems such as agent technology for enterprise integration and supply chain management, agent encapsulation, system architectures, dynamic system reconfiguration, learning, design and manufacturability assessments, distributed dynamic scheduling, integration of planning and scheduling are discussed.
Abstract: Agent technology has been considered as an important approach for developing distributed intelligent manufacturing systems. A number of researchers have attempted to apply agent technology to manufacturing enterprise integration, supply chain management, manufacturing planning, scheduling and control, materials handling, and holonic manufacturing systems. This paper gives a brief survey of some related projects in this area, and discusses some key issues in developing agent-based manufacturing systems such as agent technology for enterprise integration and supply chain management, agent encapsulation, system architectures, dynamic system reconfiguration, learning, design and manufacturability assessments, distributed dynamic scheduling, integration of planning and scheduling, concurrent scheduling and execution, factory control structures, potential tools and standards for developing agent-based manufacturing systems. An extensive annotated bibliography is provided.
809 citations
TL;DR: This paper surveys the literature in manufacturing control systems using distributed artificial intelligence techniques, namely multi-agent systems and holonic manufacturing systems principles and points out the challenges and research opportunities for the future.
770 citations
TL;DR: An attempt has been made in this paper to review the literature available on AM to identify key strategies and techniques of AM, suggest some future research directions and develop a framework for the development of agile manufacturing systems (AMSs) along four key dimensions which include strategies, technologies, systems and people.
758 citations
TL;DR: The evolution of agent technologies and manufacturing will probably proceed hand in hand and the former can receive real challenges from the latter, which will have more and more benefits in applying agent technologies, presumably together with well-established or emerging approaches of other disciplines.
Abstract: The emerging paradigm of agent-based computation has revolutionized the building of intelligent and decentralized systems. The new technologies met well the requirements in all domains of manufacturing where problems of uncertainty and temporal dynamics, information sharing and distributed operation, or coordination and cooperation of autonomous entities had to be tackled. In the paper software agents and multi-agent systems are introduced and through a comprehensive survey, their potential manufacturing applications are outlined. Special emphasis is laid on methodological issues and deployed industrial systems. After discussing open issues and strategic research directions, we conclude that the evolution of agent technologies and manufacturing will probably proceed hand in hand. The former can receive real challenges from the latter, which, in turn, will have more and more benefits in applying agent technologies, presumably together with well-established or emerging approaches of other disciplines.
668 citations
TL;DR: An update review on the recent achievements in implementing agent-based manufacturing systems such as agent encapsulation, agent organization, agent coordination and negotiation, system dynamics, learning, optimization, security and privacy, tools and standards is provided.
560 citations