A UNIFYING POINT OF VIEW IN THE PROBLEM OF PIO - Pilot In-the-loop Oscillations

Vladimir Răsvan, Daniela Danciu, Dan Popescu

Abstract

The paper starts from the problem of PIO (Pilot-In-the-loop Oscillations), a major problem in aircraft handling and control, where the idea of the feedback as hidden technology is basic. The real phenomenon called PIO is modeled by a feedback structure where the pilot acts as one of the components of the loop and has to be modeled accordingly. PIO are in fact self-sustained oscillations and usually are divided into three convenient categories that are based on the nature of the pilot and vehicle dynamics behavior models and analysis needed for their explanation. Category I PIO are essentially linear while Category II PIO are quasi-linear and typically associated with rate limiting. Category III PIO are fully nonlinear and non-stationary. Since PIO II are mostly tackled via various robustness approaches starting from linear models, the paper strives for a unifying approach which is illustrated accordingly.

References

  1. Anon. (2000). Flight Control Design - Best Practices. NATO-RTO Technical Report 29, December 2000.
  2. Klyde, D. H., McRuer, D. T., and Myers, T. T. (1995). Unified pio theory vol.i: Pio analysis with linear and nonlinear effective vehicle characteristics, including rate limiting. Technical Report WL-TR-96-3028, AIAA.
  3. Klyde, D. H., McRuer, D. T., and Myers, T. T. (1996). Pio analysis with actuator rate limiting. Paper 96-3432- CP, AIAA.
  4. Klyde, D. H. and Mitchell, D. G. (2005). A pio case study - lessons learned through analysis. Paper 05-661-CP, AIAA.
  5. McRuer, D. T. (1994). Pilot induced oscillations and human dynamic behavior. Technical report CR-4683 December 1994, NASA.
  6. McRuer, D. T., Klyde, D. H., and Myers, T. T. (1996). Development of a comprehensive pio theory. Paper 96- 3433-CP, AIAA.
  7. Megretski, A. (1997). Integral quadratic constraints for systems with rate limiters. Technical Report LIDSP-2407, Massachussets Institute of Technology, Cambridge MA.
  8. Megretski, A. and Rantzer, A. (1997). System analysis via integral quadratic constraints. IEEE Transactions on Automatic Control, 42(6):819-830.
  9. Neal, T. P. and Smith, R. E. (1971). A flying qualities criterion for the design of fighter flight control systems. Journal of Aircraft, 8(10):803-809.
  10. Popov, V. M. (1973). Hyperstability of Control Systems. Springer Verlag, Berlin-Heidelberg-New York, 1st edition.
  11. Ra?svan, V. (1975). Absolute stability of time lag control systems (in Romanian). Editura Academiei, Bucharest, 1st edition.
  12. Yakubovich, V. A. (1967). Frequency domain conditions for absolute stability of control systems with several nonlinear and linear non-stationary blocks (in russian). Avtomatika i Telemekhanika, 28(6):5-30.
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Paper Citation


in Harvard Style

Răsvan V., Danciu D. and Popescu D. (2008). A UNIFYING POINT OF VIEW IN THE PROBLEM OF PIO - Pilot In-the-loop Oscillations . In Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO, ISBN 978-989-8111-32-6, pages 200-204. DOI: 10.5220/0001505602000204


in Bibtex Style

@conference{icinco08,
author={Vladimir Răsvan and Daniela Danciu and Dan Popescu},
title={A UNIFYING POINT OF VIEW IN THE PROBLEM OF PIO - Pilot In-the-loop Oscillations},
booktitle={Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO,},
year={2008},
pages={200-204},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001505602000204},
isbn={978-989-8111-32-6},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO,
TI - A UNIFYING POINT OF VIEW IN THE PROBLEM OF PIO - Pilot In-the-loop Oscillations
SN - 978-989-8111-32-6
AU - Răsvan V.
AU - Danciu D.
AU - Popescu D.
PY - 2008
SP - 200
EP - 204
DO - 10.5220/0001505602000204