Research on Modeling Method of Runway Frictional Coefficient Measuring Vehicle Based on Impedance Diagrams

Abstract

Airport runway friction coefficient is an important parameter to evaluate the quality of runway which is usually measured by runway friction coefficient measuring vehicle. In order to reduce the airport runway friction coefficient measuring error which comes from runway vibration caused by road roughness and vehicle its own structural characteristics, an impedance diagram is used to model the suspending system and measuring system of the measuring vehicle. The power spectral density of pavement and inverse discrete Fourier transformation are introduced to model runway surface roughness as excitation input. The rationality of the stimulating established model is validated by comparing with an airport runway surface roughness measurement data. Runway friction coefficient measuring vehicle′s measuring error can be reduced and the measurement accuracy can be improved by using the impedance diagram modeling method.

Estimation for Runway Friction Coefficient Based on Multi-Sensor Information Fusion and Model Correlation

“…At present, airports mainly use an SFT (or an airport surface friction tester, ASFT) or friction coefficient car (this term is more popular in China) to measure the runway friction coefficient. In response to the problems in the measurement process, China Civil Aviation University [ 3 , 4 , 5 ] and Hebei University of Technology [ 6 , 7 ] have given many solutions. Apart from these, different methods have been applied to estimate the tire–runway friction coefficient.…”

Modeling and Simulation of Airport Runway Frictional Coefficient Measuring Vehicle Based on Bond-Graph Method

“…The bond-graph method is a modeling approach in which component energy ports are connected by bonds that specify the transfer of energy between system components. The causal strokes on a bond graph provide "signposts" to guide the generation of block diagrams, and then the model simulation could be solved by using the software package of Matlab directly [7,8].…”