SIGNAL PRE-PROCESSING SUBSYSTEM FOR THE PURPOSE OF INDUSTRIAL CONTROL

Ivan Puchr, Pavel Herout

Abstract

Commonly used methods of signal processing are often too complex and many of them induce time delay between the original and processed signal. A problem arises how to supply the controller with quality input signals without substantial delay taking limited computing power of the controller's hardware into account. A possible solution based on a signal pre-processing subsystem (SPS) delivering quality input signals to the controller is described in this paper. Concept of the SPS is based on a hardware unit with a real-time operating system managing a composition of application tasks. Hardware and software structure of the SPS is composed to enable to utilize the following specific signal processing strategy. Different signal processing methods process a particular signal simultaneously and an algorithm of continuous decision making provides the momentary best possible result in the form of a weighted combination of outputs generated by single signal processing methods. Solution is intended for enhancement of the automatic thickness/gauge control (AGC) for cold rolling mills.

References

  1. Vaseghi, S.V., 1987. Advanced Digital Signal Processing and Noise Reduction, John Wiley & Sons. New Jersey.
  2. Ettler, P., 1992. Advanced algorithms contra lack of computing power. In Proceedings of IFAC Workshop on Mutual Impact of Computing Power and Control Theory, Prague, Czech Republic.
  3. Ettler, P., Puchr, I., Štika, J., 2010. Combined Approach Helping to Reduce Periodic Disturbances in Speed Measuring. In PSYCO 2010, IFAC International Workshop on Periodic Control Systems, Antalya, TR.
  4. Hassapis, G., Geronatsios, S., Grigoriadis, J. , 2005. Testbed Evaluation of Networked Control Systems. In proceedings of ICINCO 2005, 2nd International Conference on Informatics in Control, Automation and Robotics, Barcelona, Spain.
  5. Figure 5: Angular speed filtered by moving average filter.
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Paper Citation


in Harvard Style

Puchr I. and Herout P. (2011). SIGNAL PRE-PROCESSING SUBSYSTEM FOR THE PURPOSE OF INDUSTRIAL CONTROL . In Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, ISBN 978-989-8425-74-4, pages 415-418. DOI: 10.5220/0003530404150418


in Bibtex Style

@conference{icinco11,
author={Ivan Puchr and Pavel Herout},
title={SIGNAL PRE-PROCESSING SUBSYSTEM FOR THE PURPOSE OF INDUSTRIAL CONTROL},
booktitle={Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},
year={2011},
pages={415-418},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003530404150418},
isbn={978-989-8425-74-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,
TI - SIGNAL PRE-PROCESSING SUBSYSTEM FOR THE PURPOSE OF INDUSTRIAL CONTROL
SN - 978-989-8425-74-4
AU - Puchr I.
AU - Herout P.
PY - 2011
SP - 415
EP - 418
DO - 10.5220/0003530404150418