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Toplam kayıt 108, listelenen: 1-20

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Optimal Message Scheduling for the Static Segment of Flexray

Schmidt, Klaus Werner; Schmidt, Ece G. (IEEE, 2010)

In this paper, we study the scheduling of periodic messages in the static segment of the FlexRay protocol. Our approach is based on two performance metrics. Similar to previous work, we seek to allocate a minimum number ...
Schedulability Analysis and Message Schedule Computation for the Dynamic Segment of Flexray

Schmidt, Klaus Werner; Schmidt, Ece G. (IEEE, 2010)

In this paper, we perform the schedulability analysis and schedule computation for sporadic real-time messages in the dynamic segment of the FlexRay protocol. We first formulate a linear integer programming problem that ...
A Longest-Path Problem for Evaluating the Worst-Case Packet Delay of Switched Ethernet

Schmidt, Klaus Werner; Schmidt, E. G. (2010)

In the recent years, the use of real-time Ethernet protocols becomes more and more relevant for time-critical networked industrial applications. In this context, this paper presents a method to compute the worst-case packet ...
Applied Supervisory Control for A Flexible Manufacturing System

Moor, Thomas; Schmidt, Klaus Werner; Perk, Sebastian (2010)

This paper presents a case study in the design and implementation of a discrete event system (DES) of real-world complexity. Our DES plant is a flexible manufacturing system (FMS) laboratory model that consists of 29 ...
An Experimental Study of the Flexray Dynamic Segment

Schmidt, Klaus Werner; Schmidt, Ece G.; Demirci, Ali; Yürüklü, Emrah; Karakaya, Utku (IFAC Secretariat, 2010)

It is expected that the time-triggered FlexRay bus will replace the event-triggered Controller Area Network (CAN) for the high-speed in-vehicle communication in future automobiles. To this end, FlexRay provides a static ...
Robust Scheduling and Robustness Measures for the Discrete Time/Cost Trade-Off Problem

Hazır, Öncü; Erel, Erdal; Haouari, Mohamed (Elsevier Science BV, 2010-12)

Projects are often subject to various sources of uncertainties that have a negative impact on activity durations and costs. Therefore, it is crucial to develop effective approaches to generate robust project schedules that ...
Computation of Projections for the Abstraction-Based Diagnosability Verification

Schmidt, Klaus Werner (2011)

The verification of language-diagnosability (LD) for discrete event systems (DES) generally requires the explicit evaluation of the overall system model which is infeasible for practical systems. In order to circumvent ...
An Electromagnetic Micro-Power Generator for Low Frequency Vibrations With Tunable Resonance

Türkyılmaz, S.; Zorlu, O.; Muhtaroğlu, A.; Kulah, Haluk (Elsevier Science BV, 2011)

This paper presents an electromagnetic (EM) micro-power generator with tunable resonance frequency which can harvest energy from low frequency environmental vibrations. The reported power generator up-converts low frequency ...
Robust Optimization Models for the Discrete Time/Cost Trade-Off Problem

Hazır, Öncü; Erel, Erdal; Günalay, Yavuz (Elsevier Science BV, 2011-03)

Developing models and algorithms to generate robust project schedules that are less sensitive to disturbances are essential in today's highly competitive uncertain project environments. This paper addresses robust scheduling ...
Maximally permissive hierarchical control of decentralized discrete event systems

Schmidt, Klaus Werner; Breindl, Christian (IEEE-INST Electrical Electronics Engineers INC, 2011-04)

The subject of this paper is the synthesis of natural projections that serve as nonblocking and maximally permissive abstractions for the hierarchical and decentralized control of large-scale discrete event systems. To ...
Elastic-plastic stress analysis in a long functionally graded solid cylinder with fixed ends subjected to uniform heat generation

Öztürk, Ali; Gülgeç, Müfit (Pergamon-Elsevier Science Ltd, 2011-10)

Elastic-plastic deformation of a solid cylinder with fixed ends, made of functionally graded material (FGM) with uniform internal heat generation is investigated, based on Tresca's yield criterion and its associated flow ...
Effects of the Information Presentation Format On Project Control

Hazır, Öncü; Shtub, A. (Taylor&Francis LTD, 2011-12)

In this paper, we investigate the relationship between the information presentation format and project control. Furthermore, the effects of some system conditions, namely the number of projects to be controlled and the ...
Supervisory control for failure recovery in discrete event systems

Schmidt, Klaus Werner (2012)

Discrete event system models are used for systems with a discrete state space and event-driven state transitions such as communication systems and manufacturing systems. This paper proposes a polynomial-time algorithm for ...
The verification of a novel framework for real-time shared medium communication network protocols

Kartal, Yusuf Bora; Schmidt, Ece Güran; Schmidt, Klaus Werner (2012)

The subject of this work is the real-time communication of the distributed industrial control applications over shared-medium Ethernet. We developed a framework for the real-time communication protocols over shared-medium ...
Fuzzy Hybrid Systems modeling with application in decision making and control

Boutalis, Yiannis; Moor, Thomas; Schmidt, Klaus (2012)

Hybrid Systems are systems containing both discrete event and continuous variable components. Many recent contributions address crisp situations, where ambiguity or subjectivity in the measured data is absent. In this ...
The implementation of dynamic distributed real time industrial communication protocol (D 2RIP)

Gözcü, Ahmet Korhan; Turan, Ulaş; Schmidt, Ece Güran; Schmidt, Klaus Werner (2012)

Ethernet is a popular technology for industrial networking thanks to its low cost and high bandwidth. The current proposals to achieve real-time communication over Ethernet do not consider the determinism of the control ...
An experimental investigation on the impact response of composite materials

Evci, Celal; Gülgeç, Müfit (Pergamon-Elsevier Science Ltd, 2012-05)

Due to the improved impact performance characteristics, composites are widely used in engineering and military applications to absorb the impact energy. Determination of impact response of composite materials provides the ...
Generalized expression for optical source fields

Kamacıoğlu, Canan; Baykal, Yahya (Elsevier Science Ltd, 2012-09)

A generalized optical beam expression is developed that presents the majority of the existing optical source fields such as Bessel, Laguerre-Gaussian, dark hollow, bottle, super Gaussian, Lorentz, super-Lorentz, flat-topped, ...
Fuzzy discrete event systems for multiobjective control: framework and application to mobile robot navigation

Schmidt, Klaus Werner; Boutalis, Yiannis S. (IEEE-Inst Electrical Electronics Engineers Inc, 2012-10)

Fuzzy discrete event systems (FDESs) have been introduced in recent years to model systems whose discrete states or discrete state transitions can be uncertain and are, hence, determined by a possibility degree. This paper ...
Distributed real-time protocols for industrial control systems: framework and examples

Schmidt, Klaus Werner; Schmidt, Ece Güran (IEEE-Computer Soc, 2012-10)

The automation of today's large-scale industrial systems relies on the operation of distributed controller devices that perform local computations and exchange information via communication networks. The subject of this ...

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