A study on the hydrodynamic coefficients estimation of an underwater vehicle

수중운동체의 유체계수 추정에 관한 연구

  • Published : 1996.06.01

Abstract

The hydrodynamic coefficients estimation (HCE) is important to design the autopilot and to predict the maneuverability of an underwater vehicle. In this paper, a system identification is proposed for an HCE of an underwater vehicle. First, we attempt to design the HCE algorithm which is insensitive to initial conditions and has good convergence, and which enables the estimation of the coefficents by using measured displacements only. Second, the sensor and measurement system which gauges the data from the full scale trials is constructed and the data smoothing algorithm is also designed to filter the noise due to irregular fluid flow without changing the data characteristics itself. Lastly the hydrodynamic coefficients are estimated by applying the measured data of full scale trials to the developed algorithm, and the estimated coefficients are verified by full scale trials.

References

  1. Proc of the Symposium on Control Theory and Navy Application State of the art for predicting the hydrodynamic characteristics of submarines J.Feldman
  2. Stability and Motion Control of Ocean Vehicles M.A.Abkowitz
  3. Ship Hydromechanics Department Report Discussion of submarine equation of motion J.Feldman
  4. SAND 78-2032, System Studies Division Ⅲ Real-time estimation of aerodynamic coefficients by means of an extended Kalman filter J.R.Kelsey
  5. AGARD CP-172 Input design for aircraft identification using time optimal control formulation Chen Robert
  6. proc. JACC Optimal inputs for linear systems identification R.K.Mehra
  7. SPD-10441-01 Mariner surface ship system identification L.Moran Thomas;B.Wemple Abigail;David W.Tayor
  8. Research and Development Report 2510 Standard equations of motion for submarine simulation Morton Gertler;R.Hagen.Grant
  9. Sixth Symposium on Naval hydrodynamic A model testing technique and method of analysis for the prediction of steering and maneuvering qualities of surface ships Strom-Tejsen;Chislett
  10. Discrete Systems and Digital signal Processing D.Strum.Robert;E.Kirt.Donald