caa a22 4500 475834178 CHVBK 20180406123849.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/s005210070018 doi (NATIONALLICENCE)springer-10.1007/s005210070018 A Neural Network Approach to Predicting Airspeed in Helicopters [Elektronische Daten] [D. A. Goff, S. M. Thomas, R. P. Jones, C. P. Massey] A helicopter's airspeed and sideslip angle is difficult to measure at speeds below 50 knots. This paper describes the application of Artificial Neural Network (ANN) techniques to the helicopter low air-speed problem. Three ANN methods were applied to the problem: a linear network, a Radial Basis Function (RBF) network, and a Multi-Layer Perceptron (MLP), trained using an implementation of the Levenberg-Marquardt (L-M) algorithm. Internally available measurements, such as control positions and body attitudes and rates, were generated using a realistic simulation model of a Lynx helicopter. These measurements formed the inputs to the ANN methods. The MLP was found to be the superior method. Further testing, including a Tagu-chi analysis, indicated the validity of the method. It is concluded that ANN techniques present a promising solution to the helicopter low airspeed problem.: Springer-Verlag London Limited, 2000 Keywords:Airspeed nationallicence Helicopter nationallicence Multi-layer perceptron nationallicence Sideslip angle nationallicence Goff D. A. School of Engineering, University of Warwick, Coventry, GB aut Thomas S. M. CSE International Ltd, Scunthorpe, GB aut Jones R. P. School of Engineering, University of Warwick, Coventry, GB aut Massey C. P. GKN Westland Helicopters Ltd, Yeovil, UK, GB aut https://doi.org/10.1007/s005210070018 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005210070018 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goff D. A. School of Engineering, University of Warwick, Coventry, GB aut NATIONALLICENCE 700 1- Thomas S. M. CSE International Ltd, Scunthorpe, GB aut NATIONALLICENCE 700 1- Jones R. P. School of Engineering, University of Warwick, Coventry, GB aut NATIONALLICENCE 700 1- Massey C. P. GKN Westland Helicopters Ltd, Yeovil, UK, GB aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer