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Stability and Worst-Case Performance Analysis of Sampled-Data Control Systems with Input and Output Jitter

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Author

Summary, in English

When a feedback controller is implemented in a networked embedded system, the computations and communications induce delays and jitter, which may destabilize the control loop. The majority of previous work on analysis of control loops with time-varying delays has focused on output (actuation) jitter. In many embedded systems, input (sampling) jitter is also an issue. In this paper, we analyze the combined effect of input and output jitter on the stability and performance of linear sampled-data control systems. The analysis is performed via a loop transformation involving two time-varying uncertainties. We show how the input-output gains of the linear part of the transformed system can be computed using a fast-sampling/fast-hold approximation. At the same time, we reduce the conservativeness of a previous stability theorem for pure output jitter.

Publishing year

2012

Language

English

Pages

3760-3765

Publication/Series

2012 American Control Conference (ACC)

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Control Engineering

Keywords

  • sampled-data systems real-time control jitter stability analysis

Conference name

American Control Conference, 2012

Conference date

2012-06-27 - 2012-06-29

Conference place

Montréal, Canada

Status

Published

Project

  • LCCC
  • ELLIIT-sched

Research group

  • LCCC
  • ELLIIT

ISBN/ISSN/Other

  • ISBN: 978-1-4577-1095-7