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Control-Scheduling Codesign of Real-Time Systems: The Control Server Approach

In English

Författare

Summary, in English

The paper presents the control server, a real-time schedulingmechanism tailored to control and signal processing applications. Acontrol server creates the abstraction of a control task with aspecified period and a fixed input-output latency shorter than theperiod. Individual tasks can be combined into more complexcomponents without loss of their individual guaranteed fixed-latencyproperties. I/O occurs at fixed predefined points in time, at whichinputs are read or controller outputs become visible. The controlserver model is especially suited for codesign of real-time controlsystems. The single parameter linking the scheduling design and thecontroller design is the task utilization factor. The proposedserver is an extension of the constant bandwidth server, which isbased on the earliest-deadline-first scheduling algorithm. Theserver has been implemented in a real-time kernel and has also beenvalidated in control experiments on a ball and beam process.

Publiceringsår

2005

Språk

Engelska

Sidor

209-224

Publikation/Tidskrift/Serie

Journal of Embedded Computing

Volym

1

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

IOS Press

Ämne

  • Control Engineering

Nyckelord

  • constant bandwidth server
  • real-time components
  • design methodology
  • Feedback control
  • real-time scheduling

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1740-4460