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Abstract

This paper presents the results of real time aircraft parameter estimation technology in an aircraft real time simulator. The equation error Recursive Least Squares (RLS) method is used for performing the parameter estimation. The RLS technique is successfully adapted for on-line parameter estimation by a novel methodology that will work when measurements of state derivatives are not available. Subsequently, the algorithm is implemented in Lab VIEW and in digital signal processor (DSP) hardware to demonstrate its suitability for further implementation at flight test centers and for on-board parameter estimation for aircraft.

Keywords

Real-time Parameter Estimation, Equation Error, Recursive Least Squares, Digital Filtering

Article Details

How to Cite
Kamali, C., Raol, J., & Pashilkar, A. (2023). Implementation of Real-time Parameter Estimation in Labview and Dsp. Journal of Aerospace Sciences and Technologies, 59(4), 272–281. https://doi.org/10.61653/joast.v59i4.2007.582

References

  1. Raol, J.R., Girija, G. and Singh, J., "Modeling and Parameter Estimation of Dynamic Systems", IEE Control Engineering Book Series, Vol. 65, lEE, United Kingdom, August, 2004.
  2. Marcello R Napolitano, Yongkyu Song and Brad Seanor., "On-line Parameter Estimation for Restructurable Flight Control Systems", Aircraft Design, 2001, pp.19- 50.
  3. Kamali, C. and Pashilkar, A.A., "Real Time Parameter Estimation for Reconfigurable Control of Unstable Aircraft", NAL Project Document No. FC0603.
  4. Kamali, C., Pashilkar, A.A. and Raol, J.R., "Study of RLS for Stability Margin Evaluation and Post Failure Data Analysis", NAL Project Document No.FC 0613, July, 2006.
  5. Vijay V.Patel., Girish Deodhare and Shyam Chetty., "Near Real Time Stability Margin Estimation from Piloted 3-2-1-1 Inputs", AIAA Aircraft Technology Integration and Operations (ATIO2002), Technical Forum, October, 2002.
  6. Srinathkumar., Padma Madhuranath and Girija Gopalaratnam., "Estimation of Neutral and Maneuver Points of Aircraft by Dynamic Maneuvers", AIAA Paper No.93-3620-CP, August, 1993.
  7. Basappa and Jategaonkar, R V., "Evaluation of Recursive Methods for Aircraft Parameter Estimation", DLR IB 111-2003/32.
  8. Shore, D. and Bodson, M., "Flight Testing of a Reconfigurable Control System on an Unmanned Aircraft", Journal of Guidance, Control and Dynamics, Vol.28, No. 4, July-Aug, 2005, pp.698-707.
  9. Srikanth, K P, Moncy T. Thomas and Padma Madhuranath., "Design and Development of DELS - Part 1: Out of the Window Visuals", NAL Project Document No. FC 0608, March, 2006.
  10. Moncy T. Thomas., Srikanth, K.P. and Padma Madhuranath., "Design and Development of DELS - Part 2: System Integration", NAL Project Document No.FC 0609, March, 2006.
  11. Padma Madhuranath, "Introduction to Flight Simulation", NAL - UNI Lecture Series 10, August, 1997.
  12. Robert C. Nelson., "Flight Stability and Automatic Control", McGraw-Hill International Editions, Aerospace Series, 1990.