Petri Nets in System Modeling

Networked control systems (NCSs) are digital control systems in which the functionality of the sensor, control, and actuator reside in physically different computer nodes communicating over a network. However, random delays and data loss of the communication network can endanger the stability of an NCS. We have propos…

• AHMET TEOMAN NASKALİ

In this paper, we present a novel modelling and string stability analysis method for an interconnected vehicle string in which information exchange takes place via wireless communication. The usage of wireless communication introduces time-varying sampling intervals, delays, and communication constraints of which the…

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• BARIŞ TAN

This contribution investigates the hierarchical control of decentralized discrete event systems (DES) that are synchronized by shared events. A hierarchical control architecture providing hierarchical consistency is introduced. Moreover, it allows for composition of decentralized subsystems on the high-level of the hi…

• KLAUS VERNER SCHMİDT

No abstract yet.

• AŞKINER GÜNGÖR

No abstract yet.

• GÖKHAN GELEN

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 this end, existing concepts for nonblocking abstractions such as natural observers and marked string…

• KLAUS VERNER SCHMİDT

No abstract yet.

• ORUÇ RAİF ÖNVURAL

Reward-based scheduling refers to the problem in which there is a reward associated with the execution of a task. In our framework, each real-time task comprises a mandatory and an optional part, with which a nondecreasing reward function is associated. Imprecise Computation and Increased-Reward-with-Increased-Service…

In recent years,time-triggeredcommunication protocols have been developed to support time-critical applications for in-vehicle communication. In this respect, the FlexRay protocol is likely to become thedefactostandard. In this paper, we investigate the scheduling problem of periodic signals in thestaticsegmentof Flex…

• ŞENAN ECE SCHMİDT

In recent years,time-triggeredcommunication protocols have been developed to support time-critical applications for in-vehicle communication. In this respect, the FlexRay protocol is likely to become thedefactostandard. In this paper, we investigate the scheduling problem of periodic signals in thestaticsegmentof Flex…

• KLAUS VERNER SCHMİDT

Synchronization to an external time source such as Coordinated Universal Time (UTC), i.e., external synchronization, while preserving tight synchronization among neighboring sensor nodes may be crucial for applications such as determining the speed of a moving object in wireless sensor networks. However, existing time…